-----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, WYKfH/PUZP0LCKt/uRnsB5r28TxX1KCwy22AQSPHzsT/1n6PqiMnrrzsz4fmqBEM nvuI/xXJJW3684doMJ1AzQ== 0001285923-04-001531.txt : 20041229 0001285923-04-001531.hdr.sgml : 20041229 20041229161406 ACCESSION NUMBER: 0001285923-04-001531 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20041227 ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20041229 DATE AS OF CHANGE: 20041229 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WASHINGTON MUTUAL MSC MORTGAGE PASS-THROUGH CERTIFICATES SERIES 2004-RA1 CENTRAL INDEX KEY: 0001288811 STANDARD INDUSTRIAL CLASSIFICATION: ASSET-BACKED SECURITIES [6189] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 333-103345-34 FILM NUMBER: 041231318 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 signwamms2004_ra1.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):  December 27, 2004
 

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.

WASHINGTON MUTUAL MSC MORTGAGE PASS-THROUGH CERTIFICATES
SERIES 2004-RA1
(Exact name of Registrant as specified in its charter)

Delaware 333-103345-34 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 December 2004 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 MSC
Mortgage Pass-Through Certificates, Series 2004-RA1
Monthly Distribution Report for December 2004

 

 

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:       December 29, 2004
 
By:
 
/s/ Tammy Spriggs
Tammy Spriggs
First Vice President
(Authorized Officer)

 

 

 

 

3

 

 

EXHIBIT INDEX

 

Exhibit No.

Description

99.1

Washington Mutual MSC
Mortgage Pass-Through Certificates, Series 2004-RA1
Monthly Distribution Report for December 2004

 EX-99 2 wamms2004_ra1.htm EXHIBIT


WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
 
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
IA 939336P72 $71,609,148.00 $49,736,942.45 6.5000000000% 6.5000000000% $269,408.44 $2,426,322.32 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $2,695,730.76 $47,310,620.13
IIA 939336P80 $246,256,442.00 $149,694,022.43 7.0000000000% 7.0000000000% $873,215.13 $7,202,672.05 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $8,075,887.18 $142,491,350.38
IX 939336P98 $3,263,399.00 $2,143,997.76 6.5000000000% 6.5000000000% $11,613.32 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $11,613.32 $1,975,504.15
IIX 939336Q22 $12,338,898.00 $8,219,778.57 7.0000000000% 7.0000000000% $47,948.71 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $47,948.71 $7,856,219.12
IP 939336Q30 $1,262,113.82 $964,670.49 0.0000000000% 0.0000000000% $0.00 $14,831.02 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $14,831.02 $949,839.47
IIP 939336Q48 $3,882,282.99 $2,755,593.12 0.0000000000% 0.0000000000% $0.00 $105,199.69 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $105,199.69 $2,650,393.43
CB1 939336Q55 $9,707,000.00 $9,434,504.86 6.8944094538% 6.8944094538% $54,204.45 $51,615.04 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $105,819.49 $9,382,889.82
CB2 939336Q63 $669,500.00 $650,705.77 6.8944094538% 6.8944094538% $3,738.53 $3,559.93 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $7,298.46 $647,145.84
CB3 939336Q71 $502,100.00 $488,005.04 6.8944094538% 6.8944094538% $2,803.76 $2,669.82 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $5,473.57 $485,335.22
CB4 939336Q97 $334,700.00 $325,304.29 6.8944094538% 6.8944094538% $1,868.98 $1,779.70 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $3,648.68 $323,524.59
CB5 939336R21 $334,700.00 $325,304.29 6.8944094538% 6.8944094538% $1,868.98 $1,779.70 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $3,648.68 $323,524.59
CB6 939336R39 $167,392.20 $162,693.21 6.8944094538% 6.8944094538% $934.73 $890.02 $0.00 $0.00 $0.00 $0.03 $0.00 $0.00 $0.00 $0.00 $0.00 $1,824.75 $161,803.17
R 939336Q89 $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
Total   $334,725,479.01 $214,537,745.95     $1,267,605.03 $9,811,319.29 $0.00 $0.00 $0.00 $0.03 $0.00 $0.00 $0.00 $0.00 $0.00 $11,078,924.32 $204,726,426.63



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
 
Class Orig Face Beg Bal Prin Loss Prin Reimbursed Subsequent Recoveries Deferred Interest Total Prin End Cert Pct End Cert Bal
IA $71,609,148.00 $49,736,942.45 $0.00 $0.00 $0.00 $0.00 $2,426,322.32 0.6606784392 $47,310,620.13
IIA $246,256,442.00 $149,694,022.43 $0.00 $0.00 $0.00 $0.00 $7,202,672.05 0.5786299405 $142,491,350.38
IX $3,263,399.00 $2,143,997.76 $0.00 $0.00 $0.00 $0.00 $0.00 0.6053517054 $1,975,504.15
IIX $12,338,898.00 $8,219,778.57 $0.00 $0.00 $0.00 $0.00 $0.00 0.6367034657 $7,856,219.12
IP $1,262,113.82 $964,670.49 $0.00 $0.00 $0.00 $0.00 $14,831.02 0.7525782976 $949,839.47
IIP $3,882,282.99 $2,755,593.12 $0.00 $0.00 $0.00 $0.00 $105,199.69 0.6826893961 $2,650,393.43
CB1 $9,707,000.00 $9,434,504.86 $0.00 $0.00 $0.00 $0.00 $51,615.04 0.9666106748 $9,382,889.82
CB2 $669,500.00 $650,705.77 $0.00 $0.00 $0.00 $0.00 $3,559.93 0.9666106647 $647,145.84
CB3 $502,100.00 $488,005.04 $0.00 $0.00 $0.00 $0.00 $2,669.82 0.9666106752 $485,335.22
CB4 $334,700.00 $325,304.29 $0.00 $0.00 $0.00 $0.00 $1,779.70 0.9666106663 $323,524.59
CB5 $334,700.00 $325,304.29 $0.00 $0.00 $0.00 $0.00 $1,779.70 0.9666106663 $323,524.59
CB6 $167,392.20 $162,693.21 $0.03 $0.00 $0.00 $0.00 $890.02 0.9666111683 $161,803.17
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
Total $334,725,479.01 $214,537,745.95 $0.03 $0.00 $0.00 $0.00 $9,811,319.29 0.6116248671 $204,726,426.63



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
PER $1000 DENOMINATION
Class Orig Face Beg Bal Prin Loss Prin Reimbursed Subsequent Recoveries Deferred Interest Total Prin End Cert Pct End Cert Bal
IA $71,609,148.00 694.56129334 0.00000000 0.00000000 0.00000000 0.00000000 33.88285419 0.6606784392 660.67843916
IIA $246,256,442.00 607.87860498 0.00000000 0.00000000 0.00000000 0.00000000 29.24866449 0.5786299405 578.62994049
IX $3,263,399.00 656.98302904 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.6053517054 605.35170538
IIX $12,338,898.00 666.16796492 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.6367034657 636.70346574
IP $1,262,113.82 764.32923459 0.00000000 0.00000000 0.00000000 0.00000000 11.75093701 0.7525782976 752.57829757
IIP $3,882,282.99 709.78677420 0.00000000 0.00000000 0.00000000 0.00000000 27.09737808 0.6826893961 682.68939612
CB1 $9,707,000.00 971.92797569 0.00000000 0.00000000 0.00000000 0.00000000 5.31730092 0.9666106748 966.61067477
CB2 $669,500.00 971.92796117 0.00000000 0.00000000 0.00000000 0.00000000 5.31729649 0.9666106647 966.61066468
CB3 $502,100.00 971.92798247 0.00000000 0.00000000 0.00000000 0.00000000 5.31730731 0.9666106752 966.61067516
CB4 $334,700.00 971.92796534 0.00000000 0.00000000 0.00000000 0.00000000 5.31729907 0.9666106663 966.61066627
CB5 $334,700.00 971.92796534 0.00000000 0.00000000 0.00000000 0.00000000 5.31729907 0.9666106663 966.61066627
CB6 $167,392.20 971.92826189 0.00017922 0.00000000 0.00000000 0.00000000 5.31697415 0.9666111683 966.61116826
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



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
 
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
IA $71,609,148.00 6.5000000000% 6.5000000000% $49,736,942.45 $269,408.44 $0.00 $0.00 $0.00 $0.00 $0.00 $269,408.44
IIA $246,256,442.00 7.0000000000% 7.0000000000% $149,694,022.43 $873,215.13 $0.00 $0.00 $0.00 $0.00 $0.00 $873,215.13
IX $3,263,399.00 6.5000000000% 6.5000000000% $2,143,997.76 $11,613.32 $0.00 $0.00 $0.00 $0.00 $0.00 $11,613.32
IIX $12,338,898.00 7.0000000000% 7.0000000000% $8,219,778.57 $47,948.71 $0.00 $0.00 $0.00 $0.00 $0.00 $47,948.71
IP $1,262,113.82 0.0000000000% 0.0000000000% $964,670.49 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
IIP $3,882,282.99 0.0000000000% 0.0000000000% $2,755,593.12 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
CB1 $9,707,000.00 6.8944094538% 6.8944094538% $9,434,504.86 $54,204.45 $0.00 $0.00 $0.00 $0.00 $0.00 $54,204.45
CB2 $669,500.00 6.8944094538% 6.8944094538% $650,705.77 $3,738.53 $0.00 $0.00 $0.00 $0.00 $0.00 $3,738.53
CB3 $502,100.00 6.8944094538% 6.8944094538% $488,005.04 $2,803.76 $0.00 $0.00 $0.00 $0.00 $0.00 $2,803.76
CB4 $334,700.00 6.8944094538% 6.8944094538% $325,304.29 $1,868.98 $0.00 $0.00 $0.00 $0.00 $0.00 $1,868.98
CB5 $334,700.00 6.8944094538% 6.8944094538% $325,304.29 $1,868.98 $0.00 $0.00 $0.00 $0.00 $0.00 $1,868.98
CB6 $167,392.20 6.8944094538% 6.8944094538% $162,693.21 $934.73 $0.00 $0.00 $0.00 $0.00 $0.00 $934.73
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
Total $334,725,479.01     $214,537,745.95 $1,267,605.03 $0.00 $0.00 $0.00 $0.00 $0.00 $1,267,605.03



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
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
IA $71,609,148.00 6.5000000000% 6.5000000000% 694.56129334 3.76220703 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3.76220703
IIA $246,256,442.00 7.0000000000% 7.0000000000% 607.87860498 3.54595853 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3.54595853
IX $3,263,399.00 6.5000000000% 6.5000000000% 656.98302904 3.55865771 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3.55865771
IIX $12,338,898.00 7.0000000000% 7.0000000000% 666.16796492 3.88597993 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 3.88597993
IP $1,262,113.82 0.0000000000% 0.0000000000% 764.32923459 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
IIP $3,882,282.99 0.0000000000% 0.0000000000% 709.78677420 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
CB1 $9,707,000.00 6.8944094538% 6.8944094538% 971.92797569 5.58405790 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5.58405790
CB2 $669,500.00 6.8944094538% 6.8944094538% 971.92796117 5.58406273 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5.58406273
CB3 $502,100.00 6.8944094538% 6.8944094538% 971.92798247 5.58406692 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5.58406692
CB4 $334,700.00 6.8944094538% 6.8944094538% 971.92796534 5.58404541 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5.58404541
CB5 $334,700.00 6.8944094538% 6.8944094538% 971.92796534 5.58404541 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5.58404541
CB6 $167,392.20 6.8944094538% 6.8944094538% 971.92826189 5.58407142 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 5.58407142
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



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2004 DISTRIBUTION REPORT
SERIES: WAMMS 04RA1
WEIGHTED AVERAGE PC RATE: 6.64435%
WEIGHTED AVERAGE MATURITY: 79.87135
WEIGHTED AVERAGE LOAN AGE: 97.88622
POOL NUMBER: 2360
ISSUE DATE: 04/29/2004
CERTIFICATE BALANCE AT ISSUE: $75,514,364.90
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 332   $53,106,230.14
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $775,359.97  
Unscheduled Principal Collection/Reversals   $81,235.85  
Liquidations-in-full 10 $1,619,781.77  
Subsequent Recoveries   $0.00  
Net principal Distributed   $2,476,377.59 -$2,476,377.59
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 322   $50,629,852.55
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $306,920.11  
 
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
12/2004 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $12,873.35  
 
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:   $2,770,424.35  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2004 DISTRIBUTION REPORT
SERIES: WAMMS 04RA1
WEIGHTED AVERAGE PC RATE: 7.23694%
WEIGHTED AVERAGE MATURITY: 278.51633
WEIGHTED AVERAGE LOAN AGE: 69.63294
POOL NUMBER: 2362
ISSUE DATE: 04/29/2004
CERTIFICATE BALANCE AT ISSUE: $259,211,114.18
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 481   $161,431,515.84
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $482,843.34  
Unscheduled Principal Collection/Reversals   $121,222.46  
Liquidations-in-full 20 $6,730,875.96  
Subsequent Recoveries   $0.00  
Net principal Distributed   $7,334,941.76 -$7,334,941.76
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 461   $154,096,574.08
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $1,013,016.57  
 
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
12/2004 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $39,458.36  
 
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:   $8,308,499.97  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2004 DISTRIBUTION REPORT
SERIES: WAMMS 04RA1
WEIGHTED AVERAGE PC RATE: 7.09025%
WEIGHTED AVERAGE MATURITY: 229.39045
WEIGHTED AVERAGE LOAN AGE: 76.62012
POOL NUMBER: Group 1
ISSUE DATE: 04/29/2004
CERTIFICATE BALANCE AT ISSUE: $334,725,479.08
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 813   $214,537,745.98
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $1,258,203.31  
Unscheduled Principal Collection/Reversals   $202,458.31  
Liquidations-in-full 30 $8,350,657.73  
Subsequent Recoveries   $0.00  
Net principal Distributed   $9,811,319.35 -$9,811,319.35
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 783   $204,726,426.63
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $1,319,936.68  
 
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
12/2004 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $52,331.71  
 
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:   $11,078,924.32  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2004 DISTRIBUTION REPORT
SERIES: WAMMS 04RA1
WEIGHTED AVERAGE PC RATE: 7.09025%
WEIGHTED AVERAGE MATURITY: 229.39045
WEIGHTED AVERAGE LOAN AGE: 76.62012
POOL NUMBER: ALL
ISSUE DATE: 04/29/2004
CERTIFICATE BALANCE AT ISSUE: $334,725,479.08
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 813   $214,537,745.98
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $1,258,203.31  
Unscheduled Principal Collection/Reversals   $202,458.31  
Liquidations-in-full 30 $8,350,657.73  
Subsequent Recoveries   $0.00  
Net principal Distributed   $9,811,319.35 -$9,811,319.35
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 783   $204,726,426.63
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $1,319,936.68  
 
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
12/2004 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES 		CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE) 		CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $52,331.71  
 
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:   $11,078,924.32  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
 
Distribution by Group
Pool ID Principal Interest Total  
Pool - 2360 $2,476,377.59 $294,046.76 $2,770,424.35  
Pool - 2362 $7,334,941.76 $973,558.21 $8,308,499.97  
Group 1 $9,811,319.35 $1,267,604.97 $11,078,924.32  
Aggregate $9,811,319.35 $1,267,604.97 $11,078,924.32  
 
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 - 2360 $53,106,230.14 332 10 322 $50,629,852.55 $775,359.97 $1,619,781.77 $81,235.85 $2,476,377.59
Pool - 2362 $161,431,515.84 481 20 461 $154,096,574.08 $482,843.34 $6,730,875.96 $121,222.46 $7,334,941.76
Group 1 $214,537,745.98 813 30 783 $204,726,426.63 $1,258,203.31 $8,350,657.73 $202,458.31 $9,811,319.35
Aggregate $214,537,745.98 813 30 783 $204,726,426.63 $1,258,203.31 $8,350,657.73 $202,458.31 $9,811,319.35
 
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 - 2360 3 $776,489.23 2 $56,176.17 1 $377,849.15 0 $0.00  
Pool - 2362 30 $8,538,049.23 10 $2,851,430.85 3 $736,404.90 2 $957,139.34  
Group 1 33 $9,314,538.46 12 $2,907,607.02 4 $1,114,254.05 2 $957,139.34  
Aggregate 33 $9,314,538.46 12 $2,907,607.02 4 $1,114,254.05 2 $957,139.34  
 
Foreclosure and REO Information by Group
Pool ID Foreclosure Count Sched End Balance REO Count Sched End Balance
Pool - 2360 3 $219,070.97 0 $0.00
Pool - 2362 5 $3,229,948.62 0 $0.00
Group 1 8 $3,449,019.59 0 $0.00
Aggregate 8 $3,449,019.59 0 $0.00
 
Aggregate Loss Amounts by Group
Pool ID Count Loss Amount  
Pool - 2360 0 $0.00  
Pool - 2362 0 $0.00  
Group 1 0 $0.00  
Aggregate 0 $0.00  



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
 
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 $3,820,844.00 $0.00 $0.00 $0.00 $3,820,844.00
Bankruptcy Bond
Single-Units $100,000.00 $0.00 $0.00 $0.00 $100,000.00
Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00
Mortgage Repurchase $3,347,254.79 $0.00 $0.00 $0.00 $3,347,254.79
 
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 $3,820,844.00 $0.00 $0.00 $0.00 $3,820,844.00
Bankruptcy Bond
Single-Units $100,000.00 $0.00 $0.00 $0.00 $100,000.00
Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00
Mortgage Repurchase $3,347,254.79 $0.00 $0.00 $0.00 $3,347,254.79



WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: WAMMS.04RA1
Distribution Date: 12/27/2004
 
The Group C-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 and Group II Senior Certificates. The "Prospectus Supplement" is that certain Prospectus Supplement, dated April 27,2004 to that certain Prospectus Supplement, dated February 10,2004, to which certain certificates were offered. The special hazard, bankruptcy, and Fraud coverage (collectively, "Credit Enhancements") provided by the C-B certificates provide coverage to the Loans, subject to the conditions and limitations to payment specified thereunder.
 
The Class Principal Balances of each Class of the Class CB1,CB2,CB3,CB4,CB5,CB6 Certificatesimmediately after the principal and interest distribution on 200412 are as follows:
Class Class Principal Balance
CB1 $9,382,889.82
CB2 $647,145.84
CB3 $485,335.22
CB4 $323,524.59
CB5 $323,524.59
CB6 $161,803.17
Total $11,324,223.23
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 $3,820,844.00, $100,000.00, $3,347,254.79 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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