-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, MdfMHnSEis8gg3Dnhn5/QL20eCNYbg39zwkzUFPEhyw2EMoPgMeIeKkbpPBI2Ey6 /wd5Jv2MZ/ZTory4o5oQQQ== 0001285923-05-000161.txt : 20050727 0001285923-05-000161.hdr.sgml : 20050727 20050727104020 ACCESSION NUMBER: 0001285923-05-000161 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20050725 ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20050727 DATE AS OF CHANGE: 20050727 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Washington Mutual Mortgage Pass-Through Certificates, WMALT Series 2005-1 CENTRAL INDEX KEY: 0001318987 STANDARD INDUSTRIAL CLASSIFICATION: ASSET-BACKED SECURITIES [6189] STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 333-103345-59 FILM NUMBER: 05975914 BUSINESS ADDRESS: STREET 1: 75 N FAIRWAY DR CITY: VERNON HILLS STATE: IL ZIP: 60061 BUSINESS PHONE: 8475496500 MAIL ADDRESS: STREET 1: 75 N FAIRWAY DR CITY: VERNON HILLS STATE: IL ZIP: 60061 8-K 1 signwmalt2005_1.htm LETTER

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K
CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report (date of earliest event reported):  July 25, 2005
 

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP

as Depositor under the Pooling and Servicing Agreement
providing for the issuance of

WASHINGTON MUTUAL MORTGAGE PASS-THROUGH CERTIFICATES
SERIES 2005-1
(Exact name of Registrant as specified in its charter)

Delaware 333-103345-59 94-2528990
(State or other jurisdiction
of incorporation)		 (Commission File Number)(I.R.S. Employer
Identification No.)

1201 THIRD AVENUE, WMT 1706
SEATTLE, WASHINGTON 98101
 (Address of principal executive offices and Zip Code)

Registrant's telephone number, including area code: (206) 377-8555

 

SECTION 8.  OTHER EVENTS

ITEM 8.01 Other Events

     This Current Report on Form 8-K relates to the distribution report furnished to certificate holders in connection with the July 2005 distribution.

SECTION 9.    FINANCIAL STATEMENTS AND EXHIBITS

ITEM 9.01 Financial Statements and Exhibits

(a) Not applicable

(b) Not applicable

(c)  Exhibits

Exhibit No.

Description

99.1

Washington Mutual
Mortgage Pass-Through Certificates, Series 2005-1
Monthly Distribution Report for July 2005

 

 

2

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

    WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.

Date:       July 27, 2005
 
By:
 
/s/ Barbara Campbell
Barbara Campbell
First Vice President
(Authorized Officer)

 

 

 

 

3

 

 

EXHIBIT INDEX

 

Exhibit No.

Description

99.1

Washington Mutual
Mortgage Pass-Through Certificates, Series 2005-1
Monthly Distribution Report for July 2005

 EX-99 2 wmalt2005_1.htm EXHIBIT


WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
 
Class Cusip Orig Prin Bal Begin Prin Bal Int Rate Accrued Int Rate Paid Int Dist Prin Dist Int Shortfall PPIS Uncomp Int Shortfall Prin Loss Deferred Interest Int Reimbursed Unsched Int Prin Reimbursed Subsequent Recoveries Total Dist Ending Class Bal
1A1 9393362D4 $149,000,000.00 $141,736,067.79 5.5000000000% 5.5000000000% $649,623.64 $2,952,332.72 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $3,601,956.37 $138,783,735.07
1A2 9393362E2 $5,960,000.00 $5,669,442.71 5.5000000000% 5.5000000000% $25,984.95 $118,093.31 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $144,078.25 $5,551,349.40
1A3 9393362F9 $29,036,000.00 $27,620,459.49 5.5000000000% 5.5000000000% $126,593.77 $575,328.41 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $701,922.18 $27,045,131.08
1A4 9393362G7 $13,935,000.00 $13,935,000.00 5.5000000000% 5.5000000000% $63,868.75 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $63,868.75 $13,935,000.00
1A5 9393362H5 $20,442,400.00 $20,442,400.00 5.5000000000% 5.5000000000% $93,694.33 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $93,694.33 $20,442,400.00
1A6 9393362J1 $1,550,000.00 $1,550,000.00 5.5000000000% 5.5000000000% $7,104.17 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $7,104.17 $1,550,000.00
2A 9393362K8 $65,117,000.00 $59,590,349.59 6.0000000000% 6.0000000000% $297,951.75 $1,847,200.48 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $2,145,152.23 $57,743,149.11
3A 9393362L6 $21,221,500.00 $19,921,748.41 5.0000000000% 5.0000000000% $83,007.29 $84,972.12 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $167,979.41 $19,836,776.29
4A 9393362M4 $25,283,300.00 $24,104,886.85 5.5000000000% 5.5000000000% $110,480.73 $477,083.82 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $587,564.55 $23,627,803.03
5A1 9393362N2 $58,645,000.00 $54,774,056.35 6.0000000000% 6.0000000000% $273,870.28 $296,066.60 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $569,936.89 $54,477,989.75
5A2 9393362P7 $1,760,500.00 $1,644,295.79 6.0000000000% 6.0000000000% $8,221.48 $8,887.80 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $17,109.28 $1,635,407.99
6A1 9393362Q5 $17,677,300.00 $14,948,928.41 6.5000000000% 6.5000000000% $80,973.36 $550,919.29 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $631,892.65 $14,398,009.12
6A2 9393362R3 $530,400.00 $448,536.34 6.5000000000% 6.5000000000% $2,429.57 $16,530.10 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $18,959.67 $432,006.24
7A1 9393362S1 $45,530,700.00 $42,296,678.89 5.5000000000% 5.5000000000% $193,859.78 $482,546.81 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $676,406.59 $41,814,132.08
7A2 9393362T9 $1,732,000.00 $1,732,000.00 5.5000000000% 5.5000000000% $7,938.33 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $7,938.33 $1,732,000.00
7A3 9393362U6 $5,024,800.00 $5,024,800.00 5.5000000000% 5.5000000000% $23,030.33 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $23,030.33 $5,024,800.00
7A4 9393362V4 $226,200.00 $226,200.00 5.5000000000% 5.5000000000% $1,036.75 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $1,036.75 $226,200.00
CX 9393362W2 $16,647,240.00 $15,581,496.59 5.5000000000% 5.5000000000% $71,415.19 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $71,415.19 $15,279,155.03
DX 9393362X0 $1,414,828.00 $1,356,642.51 5.5000000000% 5.5000000000% $6,217.94 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $6,217.94 $1,342,792.14
CP 9393362Y8 $912,192.00 $899,264.35 0.0000000000% 0.0000000000% $0.00 $5,137.63 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $5,137.63 $894,126.72
3P 9393362Z5 $224,290.00 $220,635.76 0.0000000000% 0.0000000000% $0.00 $1,199.22 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $1,199.22 $219,436.54
B1 9393363A9 $11,779,474.00 $11,727,014.37 5.6519197263% 5.6519197263% $55,233.45 $13,338.19 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $68,571.64 $11,713,676.18
B2 9393363B7 $5,398,834.00 $5,374,790.42 5.6519197263% 5.6519197263% $25,314.90 $6,113.23 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $31,428.14 $5,368,677.19
B3 9393363C5 $2,944,818.00 $2,931,703.32 5.6519197263% 5.6519197263% $13,808.13 $3,334.49 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $17,142.62 $2,928,368.83
B4 9393363E1 $2,944,818.00 $2,931,703.32 5.6519197263% 5.6519197263% $13,808.13 $3,334.49 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $17,142.62 $2,928,368.83
B5 9393363F8 $2,454,015.00 $2,443,086.09 5.6519197263% 5.6519197263% $11,506.77 $2,778.74 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $14,285.51 $2,440,307.35
B6 9393363G6 $1,472,409.92 $1,465,852.80 5.6519197263% 5.6519197263% $6,904.07 $1,667.15 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $8,571.22 $1,464,185.65
R 9393363D3 $100.00 $0.00 0.0000000000% 0.0000000000% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
R_SYN XXXXXXXXX $0.00 $0.00 0.0000000000% 0.0000000000% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
TFEE XXXXXXXXX $0.00 $0.00 0.0000000000% 0.0000000000% $579.57 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $579.57 $0.00
Total   $490,803,050.92 $463,659,901.05     $2,253,877.85 $7,446,864.63 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $9,700,742.48 $456,213,036.42



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
 
Class Orig Face Beg Bal Prin Loss Prin Reimbursed Subsequent Recoveries Deferred Interest Total Prin End Cert Pct End Cert Bal
1A1 $149,000,000.00 $141,736,067.79 $0.00 $0.00 $0.00 $0.00 $2,952,332.72 0.9314344636 $138,783,735.07
1A2 $5,960,000.00 $5,669,442.71 $0.00 $0.00 $0.00 $0.00 $118,093.31 0.9314344631 $5,551,349.40
1A3 $29,036,000.00 $27,620,459.49 $0.00 $0.00 $0.00 $0.00 $575,328.41 0.9314344634 $27,045,131.08
1A4 $13,935,000.00 $13,935,000.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $13,935,000.00
1A5 $20,442,400.00 $20,442,400.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $20,442,400.00
1A6 $1,550,000.00 $1,550,000.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $1,550,000.00
2A $65,117,000.00 $59,590,349.59 $0.00 $0.00 $0.00 $0.00 $1,847,200.48 0.8867599722 $57,743,149.11
3A $21,221,500.00 $19,921,748.41 $0.00 $0.00 $0.00 $0.00 $84,972.12 0.9347490182 $19,836,776.29
4A $25,283,300.00 $24,104,886.85 $0.00 $0.00 $0.00 $0.00 $477,083.82 0.9345221166 $23,627,803.03
5A1 $58,645,000.00 $54,774,056.35 $0.00 $0.00 $0.00 $0.00 $296,066.60 0.9289451744 $54,477,989.75
5A2 $1,760,500.00 $1,644,295.79 $0.00 $0.00 $0.00 $0.00 $8,887.80 0.9289451803 $1,635,407.99
6A1 $17,677,300.00 $14,948,928.41 $0.00 $0.00 $0.00 $0.00 $550,919.29 0.8144914167 $14,398,009.12
6A2 $530,400.00 $448,536.34 $0.00 $0.00 $0.00 $0.00 $16,530.10 0.8144914027 $432,006.24
7A1 $45,530,700.00 $42,296,678.89 $0.00 $0.00 $0.00 $0.00 $482,546.81 0.9183722649 $41,814,132.08
7A2 $1,732,000.00 $1,732,000.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $1,732,000.00
7A3 $5,024,800.00 $5,024,800.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $5,024,800.00
7A4 $226,200.00 $226,200.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $226,200.00
CX $16,647,240.00 $15,581,496.59 $0.00 $0.00 $0.00 $0.00 $0.00 0.9178191118 $15,279,155.03
DX $1,414,828.00 $1,356,642.51 $0.00 $0.00 $0.00 $0.00 $0.00 0.9490850761 $1,342,792.14
CP $912,192.00 $899,264.35 $0.00 $0.00 $0.00 $0.00 $5,137.63 0.9801957483 $894,126.72
3P $224,290.00 $220,635.76 $0.00 $0.00 $0.00 $0.00 $1,199.22 0.9783607829 $219,436.54
B1 $11,779,474.00 $11,727,014.37 $0.00 $0.00 $0.00 $0.00 $13,338.19 0.9944141971 $11,713,676.18
B2 $5,398,834.00 $5,374,790.42 $0.00 $0.00 $0.00 $0.00 $6,113.23 0.9944141994 $5,368,677.19
B3 $2,944,818.00 $2,931,703.32 $0.00 $0.00 $0.00 $0.00 $3,334.49 0.9944141981 $2,928,368.83
B4 $2,944,818.00 $2,931,703.32 $0.00 $0.00 $0.00 $0.00 $3,334.49 0.9944141981 $2,928,368.83
B5 $2,454,015.00 $2,443,086.09 $0.00 $0.00 $0.00 $0.00 $2,778.74 0.9944141947 $2,440,307.35
B6 $1,472,409.92 $1,465,852.80 $0.00 $0.00 $0.00 $0.00 $1,667.15 0.9944144155 $1,464,185.65
R $100.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 0.0000000000 $0.00
R_SYN $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 0.0000000000 $0.00
TFEE $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 0.0000000000 $0.00
Total $490,803,050.92 $463,659,901.05 $0.00 $0.00 $0.00 $0.00 $7,446,864.63 0.9295236359 $456,213,036.42



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
PER $1000 DENOMINATION
Class Orig Face Beg Bal Prin Loss Prin Reimbursed Subsequent Recoveries Deferred Interest Total Prin End Cert Pct End Cert Bal
1A1 $149,000,000.00 951.24877711 0.00000000 0.00000000 0.00000000 0.00000000 19.81431356 0.9314344636 931.43446356
1A2 $5,960,000.00 951.24877685 0.00000000 0.00000000 0.00000000 0.00000000 19.81431376 0.9314344631 931.43446309
1A3 $29,036,000.00 951.24877704 0.00000000 0.00000000 0.00000000 0.00000000 19.81431361 0.9314344634 931.43446342
1A4 $13,935,000.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
1A5 $20,442,400.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
1A6 $1,550,000.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
2A $65,117,000.00 915.12737979 0.00000000 0.00000000 0.00000000 0.00000000 28.36740759 0.8867599722 886.75997220
3A $21,221,500.00 938.75307636 0.00000000 0.00000000 0.00000000 0.00000000 4.00405815 0.9347490182 934.74901821
4A $25,283,300.00 953.39163994 0.00000000 0.00000000 0.00000000 0.00000000 18.86952336 0.9345221166 934.52211657
5A1 $58,645,000.00 933.99362861 0.00000000 0.00000000 0.00000000 0.00000000 5.04845426 0.9289451744 928.94517435
5A2 $1,760,500.00 933.99363249 0.00000000 0.00000000 0.00000000 0.00000000 5.04845214 0.9289451803 928.94518035
6A1 $17,677,300.00 845.65676942 0.00000000 0.00000000 0.00000000 0.00000000 31.16535274 0.8144914167 814.49141668
6A2 $530,400.00 845.65674962 0.00000000 0.00000000 0.00000000 0.00000000 31.16534691 0.8144914027 814.49140271
7A1 $45,530,700.00 928.97053834 0.00000000 0.00000000 0.00000000 0.00000000 10.59827347 0.9183722649 918.37226487
7A2 $1,732,000.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
7A3 $5,024,800.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
7A4 $226,200.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
CX $16,647,240.00 935.98077459 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.9178191118 917.81911176
DX $1,414,828.00 958.87451337 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.9490850761 949.08507607
CP $912,192.00 985.82792877 0.00000000 0.00000000 0.00000000 0.00000000 5.63218051 0.9801957483 980.19574826
3P $224,290.00 983.70752151 0.00000000 0.00000000 0.00000000 0.00000000 5.34673860 0.9783607829 978.36078291
B1 $11,779,474.00 995.54652186 0.00000000 0.00000000 0.00000000 0.00000000 1.13232475 0.9944141971 994.41419710
B2 $5,398,834.00 995.54652356 0.00000000 0.00000000 0.00000000 0.00000000 1.13232413 0.9944141994 994.41419944
B3 $2,944,818.00 995.54652274 0.00000000 0.00000000 0.00000000 0.00000000 1.13232465 0.9944141981 994.41419809
B4 $2,944,818.00 995.54652274 0.00000000 0.00000000 0.00000000 0.00000000 1.13232465 0.9944141981 994.41419809
B5 $2,454,015.00 995.54651866 0.00000000 0.00000000 0.00000000 0.00000000 1.13232397 0.9944141947 994.41419470
B6 $1,472,409.92 995.54667494 0.00000000 0.00000000 0.00000000 0.00000000 1.13225942 0.9944144155 994.41441552
R $100.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.0000000000 0.00000000
R_SYN $0.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.0000000000 0.00000000
TFEE $0.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.0000000000 0.00000000



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
 
Class Orig Face Int Rate Accrued Int Rate Paid Beg Cert Prin/Not Bal Current Int Accrued Int Shortfall PPIS Uncompensated Int Shortfall Unscheduled Int Int Reimbursed Total Int Dist
1A1 $149,000,000.00 5.5000000000% 5.5000000000% $141,736,067.79 $649,623.64 $0.00 $0.00 $0.00 $0.00 $0.00 $649,623.64
1A2 $5,960,000.00 5.5000000000% 5.5000000000% $5,669,442.71 $25,984.95 $0.00 $0.00 $0.00 $0.00 $0.00 $25,984.95
1A3 $29,036,000.00 5.5000000000% 5.5000000000% $27,620,459.49 $126,593.77 $0.00 $0.00 $0.00 $0.00 $0.00 $126,593.77
1A4 $13,935,000.00 5.5000000000% 5.5000000000% $13,935,000.00 $63,868.75 $0.00 $0.00 $0.00 $0.00 $0.00 $63,868.75
1A5 $20,442,400.00 5.5000000000% 5.5000000000% $20,442,400.00 $93,694.33 $0.00 $0.00 $0.00 $0.00 $0.00 $93,694.33
1A6 $1,550,000.00 5.5000000000% 5.5000000000% $1,550,000.00 $7,104.17 $0.00 $0.00 $0.00 $0.00 $0.00 $7,104.17
2A $65,117,000.00 6.0000000000% 6.0000000000% $59,590,349.59 $297,951.75 $0.00 $0.00 $0.00 $0.00 $0.00 $297,951.75
3A $21,221,500.00 5.0000000000% 5.0000000000% $19,921,748.41 $83,007.29 $0.00 $0.00 $0.00 $0.00 $0.00 $83,007.29
4A $25,283,300.00 5.5000000000% 5.5000000000% $24,104,886.85 $110,480.73 $0.00 $0.00 $0.00 $0.00 $0.00 $110,480.73
5A1 $58,645,000.00 6.0000000000% 6.0000000000% $54,774,056.35 $273,870.28 $0.00 $0.00 $0.00 $0.00 $0.00 $273,870.28
5A2 $1,760,500.00 6.0000000000% 6.0000000000% $1,644,295.79 $8,221.48 $0.00 $0.00 $0.00 $0.00 $0.00 $8,221.48
6A1 $17,677,300.00 6.5000000000% 6.5000000000% $14,948,928.41 $80,973.36 $0.00 $0.00 $0.00 $0.00 $0.00 $80,973.36
6A2 $530,400.00 6.5000000000% 6.5000000000% $448,536.34 $2,429.57 $0.00 $0.00 $0.00 $0.00 $0.00 $2,429.57
7A1 $45,530,700.00 5.5000000000% 5.5000000000% $42,296,678.89 $193,859.78 $0.00 $0.00 $0.00 $0.00 $0.00 $193,859.78
7A2 $1,732,000.00 5.5000000000% 5.5000000000% $1,732,000.00 $7,938.33 $0.00 $0.00 $0.00 $0.00 $0.00 $7,938.33
7A3 $5,024,800.00 5.5000000000% 5.5000000000% $5,024,800.00 $23,030.33 $0.00 $0.00 $0.00 $0.00 $0.00 $23,030.33
7A4 $226,200.00 5.5000000000% 5.5000000000% $226,200.00 $1,036.75 $0.00 $0.00 $0.00 $0.00 $0.00 $1,036.75
CX $16,647,240.00 5.5000000000% 5.5000000000% $15,581,496.59 $71,415.19 $0.00 $0.00 $0.00 $0.00 $0.00 $71,415.19
DX $1,414,828.00 5.5000000000% 5.5000000000% $1,356,642.51 $6,217.94 $0.00 $0.00 $0.00 $0.00 $0.00 $6,217.94
CP $912,192.00 0.0000000000% 0.0000000000% $899,264.35 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
3P $224,290.00 0.0000000000% 0.0000000000% $220,635.76 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
B1 $11,779,474.00 5.6519197263% 5.6519197263% $11,727,014.37 $55,233.45 $0.00 $0.00 $0.00 $0.00 $0.00 $55,233.45
B2 $5,398,834.00 5.6519197263% 5.6519197263% $5,374,790.42 $25,314.90 $0.00 $0.00 $0.00 $0.00 $0.00 $25,314.90
B3 $2,944,818.00 5.6519197263% 5.6519197263% $2,931,703.32 $13,808.13 $0.00 $0.00 $0.00 $0.00 $0.00 $13,808.13
B4 $2,944,818.00 5.6519197263% 5.6519197263% $2,931,703.32 $13,808.13 $0.00 $0.00 $0.00 $0.00 $0.00 $13,808.13
B5 $2,454,015.00 5.6519197263% 5.6519197263% $2,443,086.09 $11,506.77 $0.00 $0.00 $0.00 $0.00 $0.00 $11,506.77
B6 $1,472,409.92 5.6519197263% 5.6519197263% $1,465,852.80 $6,904.07 $0.00 $0.00 $0.00 $0.00 $0.00 $6,904.07
R $100.00 0.0000000000% 0.0000000000% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
R_SYN $0.00 0.0000000000% 0.0000000000% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
TFEE $0.00 0.0000000000% 0.0000000000% $0.00 $579.57 $0.00 $0.00 $0.00 $0.00 $0.00 $579.57
Total $490,803,050.92     $463,659,901.05 $2,253,877.85 $0.00 $0.00 $0.00 $0.00 $0.00 $2,253,877.85



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
PER $1000 DENOMINATION
Class Orig Face Int Rate Accrued Int Rate Paid Beg Cert Prin/Not Bal Curent Int Accrued Int Shortfall PPIS Uncompensated Int Shortfall Unscheduled Int Int Reimbursed Total Int Dist
1A1 $149,000,000.00 5.5000000000% 5.5000000000% 951.24877711 4.35989020 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.35989020
1A2 $5,960,000.00 5.5000000000% 5.5000000000% 951.24877685 4.35989094 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.35989094
1A3 $29,036,000.00 5.5000000000% 5.5000000000% 951.24877704 4.35989014 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.35989014
1A4 $13,935,000.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333333 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58333333
1A5 $20,442,400.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333317 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58333317
1A6 $1,550,000.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333548 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58333548
2A $65,117,000.00 6.0000000000% 6.0000000000% 915.12737979 4.57563693 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.57563693
3A $21,221,500.00 5.0000000000% 5.0000000000% 938.75307636 3.91147139 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3.91147139
4A $25,283,300.00 5.5000000000% 5.5000000000% 953.39163994 4.36971163 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.36971163
5A1 $58,645,000.00 6.0000000000% 6.0000000000% 933.99362861 4.66996811 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.66996811
5A2 $1,760,500.00 6.0000000000% 6.0000000000% 933.99363249 4.66996876 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.66996876
6A1 $17,677,300.00 6.5000000000% 6.5000000000% 845.65676942 4.58064071 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58064071
6A2 $530,400.00 6.5000000000% 6.5000000000% 845.65674962 4.58063725 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58063725
7A1 $45,530,700.00 5.5000000000% 5.5000000000% 928.97053834 4.25778167 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.25778167
7A2 $1,732,000.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333141 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58333141
7A3 $5,024,800.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333267 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58333267
7A4 $226,200.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333333 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.58333333
CX $16,647,240.00 5.5000000000% 5.5000000000% 935.98077459 4.28991172 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.28991172
DX $1,414,828.00 5.5000000000% 5.5000000000% 958.87451337 4.39483810 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.39483810
CP $912,192.00 0.0000000000% 0.0000000000% 985.82792877 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
3P $224,290.00 0.0000000000% 0.0000000000% 983.70752151 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
B1 $11,779,474.00 5.6519197263% 5.6519197263% 995.54652186 4.68895725 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.68895725
B2 $5,398,834.00 5.6519197263% 5.6519197263% 995.54652356 4.68895691 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.68895691
B3 $2,944,818.00 5.6519197263% 5.6519197263% 995.54652274 4.68895871 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.68895871
B4 $2,944,818.00 5.6519197263% 5.6519197263% 995.54652274 4.68895871 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.68895871
B5 $2,454,015.00 5.6519197263% 5.6519197263% 995.54651866 4.68895667 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.68895667
B6 $1,472,409.92 5.6519197263% 5.6519197263% 995.54667494 4.68895917 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 4.68895917
R $100.00 0.0000000000% 0.0000000000% 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
R_SYN $0.00 0.0000000000% 0.0000000000% 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
TFEE $0.00 0.0000000000% 0.0000000000% 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 5.64732%
WEIGHTED AVERAGE MATURITY: 351.06818
WEIGHTED AVERAGE LOAN AGE: 6.66824
POOL NUMBER: 2672
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $233,678,702.65
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 1198   $224,650,330.29
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $202,541.11  
Unscheduled Principal Collection/Reversals   $80,193.52  
Liquidations-in-full 16 $3,379,684.37  
Subsequent Recoveries   $0.00  
Net principal Distributed   $3,662,419.00 -$3,662,419.00
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 1182   $220,987,911.29
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $1,104,029.70  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $46,802.16  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $4,719,646.54  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 6.14838%
WEIGHTED AVERAGE MATURITY: 353.07248
WEIGHTED AVERAGE LOAN AGE: 6.27863
POOL NUMBER: 2673
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $68,906,925.80
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 347   $63,369,726.59
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $45,427.75  
Unscheduled Principal Collection/Reversals   $4,900.80  
Liquidations-in-full 10 $1,799,581.25  
Subsequent Recoveries   $0.00  
Net principal Distributed   $1,849,909.80 -$1,849,909.80
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 337   $61,519,816.79
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $337,886.05  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $13,202.01  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $2,174,593.84  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 5.09094%
WEIGHTED AVERAGE MATURITY: 172.55225
WEIGHTED AVERAGE LOAN AGE: 6.83179
POOL NUMBER: 2674
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $22,693,985.05
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 159   $21,371,964.51
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $81,943.35  
Unscheduled Principal Collection/Reversals   $8,940.89  
Liquidations-in-full 0 $0.00  
Subsequent Recoveries   $0.00  
Net principal Distributed   $90,884.24 -$90,884.24
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 159   $21,281,080.27
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $95,121.95  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $4,452.53  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $181,553.66  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 5.67276%
WEIGHTED AVERAGE MATURITY: 171.80677
WEIGHTED AVERAGE LOAN AGE: 7.16286
POOL NUMBER: 2675
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $26,754,831.60
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 262   $25,555,391.86
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $94,093.17  
Unscheduled Principal Collection/Reversals   $10,042.69  
Liquidations-in-full 3 $378,288.62  
Subsequent Recoveries   $0.00  
Net principal Distributed   $482,424.48 -$482,424.48
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 259   $25,072,967.38
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $126,131.99  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $5,324.10  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $603,232.37  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 6.16260%
WEIGHTED AVERAGE MATURITY: 351.33378
WEIGHTED AVERAGE LOAN AGE: 6.66197
POOL NUMBER: 2676
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $63,921,204.44
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 473   $59,921,599.93
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $54,434.35  
Unscheduled Principal Collection/Reversals   $12,978.47  
Liquidations-in-full 3 $240,724.03  
Subsequent Recoveries   $0.00  
Net principal Distributed   $308,136.85 -$308,136.85
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 470   $59,613,463.08
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $320,210.91  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $12,483.85  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $615,863.91  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 6.57587%
WEIGHTED AVERAGE MATURITY: 352.19373
WEIGHTED AVERAGE LOAN AGE: 7.22676
POOL NUMBER: 2677
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $19,267,458.53
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 133   $16,453,655.95
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $14,087.91  
Unscheduled Principal Collection/Reversals   $966.59  
Liquidations-in-full 3 $553,299.22  
Subsequent Recoveries   $0.00  
Net principal Distributed   $568,353.72 -$568,353.72
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 130   $15,885,302.23
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $93,592.20  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $3,427.89  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $658,518.03  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 6.02090%
WEIGHTED AVERAGE MATURITY: 353.09541
WEIGHTED AVERAGE LOAN AGE: 6.52113
POOL NUMBER: 2678
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $55,579,943.20
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 98   $52,337,232.04
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $37,427.24  
Unscheduled Principal Collection/Reversals   $6,026.33  
Liquidations-in-full 1 $441,283.06  
Subsequent Recoveries   $0.00  
Net principal Distributed   $484,736.63 -$484,736.63
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 97   $51,852,495.41
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $273,501.21  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $10,903.71  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $747,334.13  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 5.83327%
WEIGHTED AVERAGE MATURITY: 333.46348
WEIGHTED AVERAGE LOAN AGE: 6.65242
POOL NUMBER: Group 1
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $490,803,051.27
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 2670   $463,659,901.17
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $529,954.88  
Unscheduled Principal Collection/Reversals   $124,049.29  
Liquidations-in-full 36 $6,792,860.55  
Subsequent Recoveries   $0.00  
Net principal Distributed   $7,446,864.72 -$7,446,864.72
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 2634   $456,213,036.45
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $2,350,474.01  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $96,596.25  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $9,700,742.48  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
SERIES: WMALT 051
WEIGHTED AVERAGE PC RATE: 5.83327%
WEIGHTED AVERAGE MATURITY: 333.46348
WEIGHTED AVERAGE LOAN AGE: 6.65242
POOL NUMBER: ALL
ISSUE DATE: 02/25/2005
CERTIFICATE BALANCE AT ISSUE: $490,803,051.27
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 2670   $463,659,901.17
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $529,954.88  
Unscheduled Principal Collection/Reversals   $124,049.29  
Liquidations-in-full 36 $6,792,860.55  
Subsequent Recoveries   $0.00  
Net principal Distributed   $7,446,864.72 -$7,446,864.72
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 2634   $456,213,036.45
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $2,350,474.01  
 
UNSCHEDULED INTEREST AT MORTGAGE RATE:      
Unscheduled Interest Collection/Reversals   $0.00  
Interest Uncollected on Liquidation   $0.00  
Interest Uncollected on Non-Earning Assets   $0.00  
Interest Uncollected on Prepayment   $0.00  
Uncompensated Uncollected Interest   $0.00  
Net Unscheduled Interest Distributed   $0.00  
 
OTHER:      
Loan Conversion Fees   $0.00  
Expense Reimbursements   $0.00  
Gain on Liquidations   $0.00  
Hazard Insurance Premium Refunds   $0.00  
Recoveries Carried Forward   $0.00  
Net Other Distributions   $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
07/2005 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $96,596.25  
 
UNSCHEDULED SERVICING FEES:      
Unscheduled Service Fee Collections/Reversals   $0.00  
Servicing Fees Uncollected on Liquidation   $0.00  
Servicing Fees Uncollected/Non-Earning Assets   $0.00  
Net Unscheduled Service Fees Distributed   $0.00  
 
MISCELLANEOUS EXPENSES:   $0.00  
 
NET FUNDS DISTRIBUTED:   $9,700,742.48  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
 
Distribution by Group
Pool ID Principal Interest Total  
Pool - 2672 $3,662,419.00 $1,057,227.54 $4,719,646.54  
Pool - 2673 $1,849,909.80 $324,684.04 $2,174,593.84  
Pool - 2674 $90,884.24 $90,669.42 $181,553.66  
Pool - 2675 $482,424.48 $120,807.89 $603,232.37  
Pool - 2676 $308,136.85 $307,727.06 $615,863.91  
Pool - 2677 $568,353.72 $90,164.31 $658,518.03  
Pool - 2678 $484,736.63 $262,597.50 $747,334.13  
Group 1 $7,446,864.72 $2,253,877.76 $9,700,742.48  
Aggregate $7,446,864.72 $2,253,877.76 $9,700,742.48  
 
Number of Loans and Aggregate Principal Balance By Group
Pool ID Beg Bal Beg Count Paid Off / Liq Count Rem Count Sched Prin End Bal Sched Prin Prin PrePay / Liq Unsched Prin / Rev Total Prin
Pool - 2672 $224,650,330.29 1198 16 1182 $220,987,911.29 $202,541.11 $3,379,684.37 $80,193.52 $3,662,419.00
Pool - 2673 $63,369,726.59 347 10 337 $61,519,816.79 $45,427.75 $1,799,581.25 $4,900.80 $1,849,909.80
Pool - 2674 $21,371,964.51 159 0 159 $21,281,080.27 $81,943.35 $0.00 $8,940.89 $90,884.24
Pool - 2675 $25,555,391.86 262 3 259 $25,072,967.38 $94,093.17 $378,288.62 $10,042.69 $482,424.48
Pool - 2676 $59,921,599.93 473 3 470 $59,613,463.08 $54,434.35 $240,724.03 $12,978.47 $308,136.85
Pool - 2677 $16,453,655.95 133 3 130 $15,885,302.23 $14,087.91 $553,299.22 $966.59 $568,353.72
Pool - 2678 $52,337,232.04 98 1 97 $51,852,495.41 $37,427.24 $441,283.06 $6,026.33 $484,736.63
Group 1 $463,659,901.17 2670 36 2634 $456,213,036.45 $529,954.88 $6,792,860.55 $124,049.29 $7,446,864.72
Aggregate $463,659,901.17 2670 36 2634 $456,213,036.45 $529,954.88 $6,792,860.55 $124,049.29 $7,446,864.72
 
Delinquency Information by Group
Pool ID 1 Month Count Sched End Balance 2 Months Count Sched End Balance 3 Months Count Sched End Balance 4 Months Count Sched End Balance  
Pool - 2672 15 $2,332,227.78 0 $0.00 0 $0.00 0 $0.00  
Pool - 2673 7 $1,548,566.41 0 $0.00 0 $0.00 0 $0.00  
Pool - 2674 3 $519,784.40 0 $0.00 0 $0.00 0 $0.00  
Pool - 2675 2 $88,553.05 0 $0.00 0 $0.00 0 $0.00  
Pool - 2676 5 $280,932.43 0 $0.00 0 $0.00 0 $0.00  
Pool - 2677 1 $42,903.78 0 $0.00 0 $0.00 0 $0.00  
Pool - 2678 1 $445,652.89 0 $0.00 0 $0.00 0 $0.00  
Group 1 34 $5,258,620.74 0 $0.00 0 $0.00 0 $0.00  
Aggregate 34 $5,258,620.74 0 $0.00 0 $0.00 0 $0.00  
 
Foreclosure and REO Information by Group
Pool ID Foreclosure Count Sched End Balance REO Count Sched End Balance
Pool - 2672 0 $0.00 0 $0.00
Pool - 2673 0 $0.00 0 $0.00
Pool - 2674 0 $0.00 0 $0.00
Pool - 2675 0 $0.00 0 $0.00
Pool - 2676 0 $0.00 0 $0.00
Pool - 2677 0 $0.00 0 $0.00
Pool - 2678 0 $0.00 0 $0.00
Group 1 0 $0.00 0 $0.00
Aggregate 0 $0.00 0 $0.00
 
Aggregate Loss Amounts by Group
Pool ID Count Loss Amount  
Pool - 2672 0 $0.00  
Pool - 2673 0 $0.00  
Pool - 2674 0 $0.00  
Pool - 2675 0 $0.00  
Pool - 2676 0 $0.00  
Pool - 2677 0 $0.00  
Pool - 2678 0 $0.00  
Group 1 0 $0.00  
Aggregate 0 $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
 
INSURANCE RESERVES - Group 1
Insurance Type Original Balance Claims In Progress Claims Paid Coverage Adjustments Coverage Remaining
MPI $0.00 $0.00 $0.00 $0.00 $0.00
Special Hazard $0.00 $0.00 $0.00 $0.00 $0.00
Bankruptcy Bond
Single-Units $0.00 $0.00 $0.00 $0.00 $0.00
Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00
Mortgage Repurchase $0.00 $0.00 $0.00 $0.00 $0.00
 
INSURANCE RESERVES - Aggregate
Insurance Type Original Balance Claims In Progress Claims Paid Coverage Adjustments Coverage Remaining
MPI $0.00 $0.00 $0.00 $0.00 $0.00
Special Hazard $0.00 $0.00 $0.00 $0.00 $0.00
Bankruptcy Bond
Single-Units $0.00 $0.00 $0.00 $0.00 $0.00
Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00
Mortgage Repurchase $0.00 $0.00 $0.00 $0.00 $0.00



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WMALT.051
Distribution Date: 07/25/2005
 
The Group B Certificates provide, to the limited extent described in the Prospectus Supplement, credit support, as well as special hazard, bankruptcy, and fraud coverage to certain Group I, II, III,IV, V, VI, and VII Certificates. The "Prospectus Supplement" is that certain Prospectus Supplement, dated February 23,2005 to that certain Prospectus Supplement, dated February 10,2004, to which certain Group I, II, III, IV, V, VI,and VII Certificates were offered. The Special Hazard, Bankruptcy, and Fraud coverage (collectively, "Credit Enhancements") provided by the B certificates provide coverage to the Group I, II, III, IV, V,VI, and VII Loans, subject to the conditions and limitations to payment specified thereunder.
 
The Class Principal Balances of each Class of the Class B1,B2,B3,B4,B5,B6 Certificatesimmediately after the principal and interest distribution on 200507 are as follows:
Class Class Principal Balance
B1 $11,713,676.18
B2 $5,368,677.19
B3 $2,928,368.83
B4 $2,928,368.83
B5 $2,440,307.35
B6 $1,464,185.65
Total $26,843,584.02
Capitalized items used but not defined herein have the meanings ascribed to them in the Prospectus Supplement.
The amount of the special hazard coverage, bankruptcy coverage, and fraud coverage, as of the above referenced distribution date, is $0.00, $0.00, $0.00 respectively, and such coverages are referred to in the table above under the column "Insurance Type" as "special hazard," "bankruptcy bond," and "mortgage repurchase," respectively. However, no policy of insurance exists for any such coverage, notwithstanding the reference to "insurance."


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