EX-99 2 amac2003_13.htm EXHIBIT


WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
 
Class Cusip Orig Prin Bal Begin Prin Bal Int Rate Accrued Int Rate Paid Int Dist Prin Dist Int Shortfall Prin Loss Deferred Interest Int Reimbursed Unscheduled Int Prin Reimbursed Subsequent Recoveries Total Dist Ending Class Bal
A1 000780NX0 $40,000,000.00 $32,334,385.88 5.5000000000% 5.5000000000% $148,199.27 $1,161,172.49 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $1,309,371.75 $31,173,213.39
A2 000780NY8 $28,373,000.00 $27,812,176.37 5.5000000000% 5.5000000000% $127,472.48 $113,711.69 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $241,184.17 $27,698,464.68
A3 000780NZ5 $24,249,000.00 $24,809,823.63 5.5000000000% 5.5000000000% $113,711.69 ($113,711.69) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $24,923,535.32
A4 000780PA8 $29,323,850.00 $29,323,850.00 5.5000000000% 5.5000000000% $134,400.98 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $134,400.98 $29,323,850.00
A5 000780PP5 $2,210,139.00 $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
A6 000780PQ3 $207,487,020.00 $158,942,034.52 5.5000000000% 5.5000000000% $728,484.32 $5,707,828.13 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $6,436,312.45 $153,234,206.39
A7 000780PR1 $4,878,279.00 $4,878,279.00 5.5000000000% 5.5000000000% $22,358.78 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $22,358.78 $4,878,279.00
A8 000780PS9 $5,000,000.00 $3,830,168.14 5.2500000000% 5.2500000000% $16,756.99 $137,546.63 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $154,303.62 $3,692,621.51
A9 000780PT7 $500,000.00 $383,016.81 1.5750000000% 1.5750000000% $502.71 $13,754.66 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $14,257.37 $369,262.15
A10 000780PU4 $500,000.00 $383,016.81 6.4250000000% 6.4250000000% $2,050.74 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $2,050.74 $369,262.15
AP 000780PB6 $2,193,666.68 $2,160,383.23 0.0000000000% 0.0000000000% $0.00 $3,305.04 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $3,305.04 $2,157,078.19
AX 000780PC4 $236,623.75 $150,402.10 5.5000000000% 5.5000000000% $689.34 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $689.34 $147,528.67
M 000780PD2 $5,497,510.00 $5,469,411.04 5.5000000000% 5.5000000000% $25,068.13 $5,755.07 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $30,823.20 $5,463,655.97
B1 000780PE0 $2,128,068.00 $2,117,190.98 5.5000000000% 5.5000000000% $9,703.79 $2,227.77 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $11,931.56 $2,114,963.21
B2 000780PF7 $1,064,034.00 $1,058,595.49 5.5000000000% 5.5000000000% $4,851.90 $1,113.88 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $5,965.78 $1,057,481.61
B3 000780PH3 $709,356.00 $705,730.33 5.5000000000% 5.5000000000% $3,234.60 $742.59 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $3,977.19 $704,987.74
B4 000780PJ9 $532,017.00 $529,297.75 5.5000000000% 5.5000000000% $2,425.95 $556.94 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $2,982.89 $528,740.81
B5 000780PK6 $532,018.07 $529,298.83 5.5000000000% 5.5000000000% $2,425.95 $556.78 $0.00 $0.18 $0.00 $0.00 $0.00 $0.00 $0.00 $2,982.73 $528,741.87
R 000780PG5 $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
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
Total   $354,678,057.75 $294,883,642.00     $1,342,337.61 $7,034,559.98 $0.00 $0.18 $0.00 $0.00 $0.00 $0.00 $0.00 $8,376,897.59 $287,849,081.84




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
 
Class Orig Face Beg Bal Prin Loss Prin Reimbursed Subsequent Recoveries Deferred Interest Total Prin End Cert Pct End Cert Bal
A1 $40,000,000.00 $32,334,385.88 $0.00 $0.00 $0.00 $0.00 $1,161,172.49 0.7793303348 $31,173,213.39
A2 $28,373,000.00 $27,812,176.37 $0.00 $0.00 $0.00 $0.00 $113,711.69 0.9762261544 $27,698,464.68
A3 $24,249,000.00 $24,809,823.63 $0.00 $0.00 $0.00 $0.00 ($113,711.69) 1.0278170366 $24,923,535.32
A4 $29,323,850.00 $29,323,850.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $29,323,850.00
A5 $2,210,139.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 0.0000000000 $0.00
A6 $207,487,020.00 $158,942,034.52 $0.00 $0.00 $0.00 $0.00 $5,707,828.13 0.7385243009 $153,234,206.39
A7 $4,878,279.00 $4,878,279.00 $0.00 $0.00 $0.00 $0.00 $0.00 1.0000000000 $4,878,279.00
A8 $5,000,000.00 $3,830,168.14 $0.00 $0.00 $0.00 $0.00 $137,546.63 0.7385243020 $3,692,621.51
A9 $500,000.00 $383,016.81 $0.00 $0.00 $0.00 $0.00 $13,754.66 0.7385243000 $369,262.15
A10 $500,000.00 $383,016.81 $0.00 $0.00 $0.00 $0.00 $0.00 0.7385243000 $369,262.15
AP $2,193,666.68 $2,160,383.23 $0.00 $0.00 $0.00 $0.00 $3,305.04 0.9833208526 $2,157,078.19
AX $236,623.75 $150,402.10 $0.00 $0.00 $0.00 $0.00 $0.00 0.6234736369 $147,528.67
M $5,497,510.00 $5,469,411.04 $0.00 $0.00 $0.00 $0.00 $5,755.07 0.9938419339 $5,463,655.97
B1 $2,128,068.00 $2,117,190.98 $0.00 $0.00 $0.00 $0.00 $2,227.77 0.9938419308 $2,114,963.21
B2 $1,064,034.00 $1,058,595.49 $0.00 $0.00 $0.00 $0.00 $1,113.88 0.9938419355 $1,057,481.61
B3 $709,356.00 $705,730.33 $0.00 $0.00 $0.00 $0.00 $742.59 0.9938419355 $704,987.74
B4 $532,017.00 $529,297.75 $0.00 $0.00 $0.00 $0.00 $556.94 0.9938419449 $528,740.81
B5 $532,018.07 $529,298.83 $0.18 $0.00 $0.00 $0.00 $556.78 0.9938419385 $528,741.87
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 $354,678,057.75 $294,883,642.00 $0.18 $0.00 $0.00 $0.00 $7,034,559.98 0.8115784880 $287,849,081.84




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
PER $1000 DENOMINATION
Class Orig Face Beg Bal Prin Loss Prin Reimbursed Subsequent Recoveries Deferred Interest Total Prin End Cert Pct End Cert Bal
A1 $40,000,000.00 808.35964700 0.00000000 0.00000000 0.00000000 0.00000000 29.02931225 0.7793303348 779.33033475
A2 $28,373,000.00 980.23389737 0.00000000 0.00000000 0.00000000 0.00000000 4.00774292 0.9762261544 976.22615444
A3 $24,249,000.00 1,023.12770135 0.00000000 0.00000000 0.00000000 0.00000000 -4.68933523 1.0278170366 1,027.81703658
A4 $29,323,850.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
A5 $2,210,139.00 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.0000000000 0.00000000
A6 $207,487,020.00 766.03362716 0.00000000 0.00000000 0.00000000 0.00000000 27.50932627 0.7385243009 738.52430089
A7 $4,878,279.00 1,000.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1.0000000000 1,000.00000000
A8 $5,000,000.00 766.03362800 0.00000000 0.00000000 0.00000000 0.00000000 27.50932600 0.7385243020 738.52430200
A9 $500,000.00 766.03362000 0.00000000 0.00000000 0.00000000 0.00000000 27.50932000 0.7385243000 738.52430000
A10 $500,000.00 766.03362000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.7385243000 738.52430000
AP $2,193,666.68 984.82748072 0.00000000 0.00000000 0.00000000 0.00000000 1.50662816 0.9833208526 983.32085256
AX $236,623.75 635.61709254 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.6234736369 623.47363694
M $5,497,510.00 994.88878420 0.00000000 0.00000000 0.00000000 0.00000000 1.04685030 0.9938419339 993.84193389
B1 $2,128,068.00 994.88878175 0.00000000 0.00000000 0.00000000 0.00000000 1.04685095 0.9938419308 993.84193080
B2 $1,064,034.00 994.88878175 0.00000000 0.00000000 0.00000000 0.00000000 1.04684625 0.9938419355 993.84193550
B3 $709,356.00 994.88878645 0.00000000 0.00000000 0.00000000 0.00000000 1.04685095 0.9938419355 993.84193550
B4 $532,017.00 994.88879115 0.00000000 0.00000000 0.00000000 0.00000000 1.04684625 0.9938419449 993.84194490
B5 $532,018.07 994.88882022 0.00033833 0.00000000 0.00000000 0.00000000 1.04654340 0.9938419385 993.84193849
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: AMAC.0313
Distribution Date: 06/25/2004
 
Class Orig Face Int Rate Accrued Int Rate Paid Beg Cert Prin/Not Bal Curent Int Accrued Int Shortfall Unscheduled Int Int Reimbursed Total Int Dist
A1 $40,000,000.00 5.5000000000% 5.5000000000% $32,334,385.88 $148,199.27 $0.00 $0.00 $0.00 $148,199.27
A2 $28,373,000.00 5.5000000000% 5.5000000000% $27,812,176.37 $127,472.48 $0.00 $0.00 $0.00 $127,472.48
A3 $24,249,000.00 5.5000000000% 5.5000000000% $24,809,823.63 $113,711.69 $0.00 $0.00 $0.00 $113,711.69
A4 $29,323,850.00 5.5000000000% 5.5000000000% $29,323,850.00 $134,400.98 $0.00 $0.00 $0.00 $134,400.98
A5 $2,210,139.00 0.0000000000% 0.0000000000% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
A6 $207,487,020.00 5.5000000000% 5.5000000000% $158,942,034.52 $728,484.32 $0.00 $0.00 $0.00 $728,484.32
A7 $4,878,279.00 5.5000000000% 5.5000000000% $4,878,279.00 $22,358.78 $0.00 $0.00 $0.00 $22,358.78
A8 $5,000,000.00 5.2500000000% 5.2500000000% $3,830,168.14 $16,756.99 $0.00 $0.00 $0.00 $16,756.99
A9 $500,000.00 1.5750000000% 1.5750000000% $383,016.81 $502.71 $0.00 $0.00 $0.00 $502.71
A10 $500,000.00 6.4250000000% 6.4250000000% $383,016.81 $2,050.74 $0.00 $0.00 $0.00 $2,050.74
AP $2,193,666.68 0.0000000000% 0.0000000000% $2,160,383.23 $0.00 $0.00 $0.00 $0.00 $0.00
AX $236,623.75 5.5000000000% 5.5000000000% $150,402.10 $689.34 $0.00 $0.00 $0.00 $689.34
M $5,497,510.00 5.5000000000% 5.5000000000% $5,469,411.04 $25,068.13 $0.00 $0.00 $0.00 $25,068.13
B1 $2,128,068.00 5.5000000000% 5.5000000000% $2,117,190.98 $9,703.79 $0.00 $0.00 $0.00 $9,703.79
B2 $1,064,034.00 5.5000000000% 5.5000000000% $1,058,595.49 $4,851.90 $0.00 $0.00 $0.00 $4,851.90
B3 $709,356.00 5.5000000000% 5.5000000000% $705,730.33 $3,234.60 $0.00 $0.00 $0.00 $3,234.60
B4 $532,017.00 5.5000000000% 5.5000000000% $529,297.75 $2,425.95 $0.00 $0.00 $0.00 $2,425.95
B5 $532,018.07 5.5000000000% 5.5000000000% $529,298.83 $2,425.95 $0.00 $0.00 $0.00 $2,425.95
R $100.00 0.0000000000% 0.0000000000% $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
Total $354,678,057.75     $294,883,642.00 $1,342,337.61 $0.00 $0.00 $0.00 $1,342,337.61




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
PER $1000 DENOMINATION
Class Orig Face Int Rate Accrued Int Rate Paid Beg Cert Prin/Not Bal Curent Int Accrued Int Shortfall Unscheduled Int Int Reimbursed Total Int Dist
A1 $40,000,000.00 5.5000000000% 5.5000000000% 808.35964700 3.70498175 0.00000000 0.00000000 0.00000000 3.70498175
A2 $28,373,000.00 5.5000000000% 5.5000000000% 980.23389737 4.49273887 0.00000000 0.00000000 0.00000000 4.49273887
A3 $24,249,000.00 5.5000000000% 5.5000000000% 1,023.12770135 4.68933523 0.00000000 0.00000000 0.00000000 4.68933523
A4 $29,323,850.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333336 0.00000000 0.00000000 0.00000000 4.58333336
A5 $2,210,139.00 0.0000000000% 0.0000000000% 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
A6 $207,487,020.00 5.5000000000% 5.5000000000% 766.03362716 3.51098743 0.00000000 0.00000000 0.00000000 3.51098743
A7 $4,878,279.00 5.5000000000% 5.5000000000% 1,000.00000000 4.58333359 0.00000000 0.00000000 0.00000000 4.58333359
A8 $5,000,000.00 5.2500000000% 5.2500000000% 766.03362800 3.35139800 0.00000000 0.00000000 0.00000000 3.35139800
A9 $500,000.00 1.5750000000% 1.5750000000% 766.03362000 1.00542000 0.00000000 0.00000000 0.00000000 1.00542000
A10 $500,000.00 6.4250000000% 6.4250000000% 766.03362000 4.10148000 0.00000000 0.00000000 0.00000000 4.10148000
AP $2,193,666.68 0.0000000000% 0.0000000000% 984.82748072 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000
AX $236,623.75 5.5000000000% 5.5000000000% 635.61709254 2.91323251 0.00000000 0.00000000 0.00000000 2.91323251
M $5,497,510.00 5.5000000000% 5.5000000000% 994.88878420 4.55990621 0.00000000 0.00000000 0.00000000 4.55990621
B1 $2,128,068.00 5.5000000000% 5.5000000000% 994.88878175 4.55990598 0.00000000 0.00000000 0.00000000 4.55990598
B2 $1,064,034.00 5.5000000000% 5.5000000000% 994.88878175 4.55991068 0.00000000 0.00000000 0.00000000 4.55991068
B3 $709,356.00 5.5000000000% 5.5000000000% 994.88878645 4.55991068 0.00000000 0.00000000 0.00000000 4.55991068
B4 $532,017.00 5.5000000000% 5.5000000000% 994.88879115 4.55991068 0.00000000 0.00000000 0.00000000 4.55991068
B5 $532,018.07 5.5000000000% 5.5000000000% 994.88882022 4.55990151 0.00000000 0.00000000 0.00000000 4.55990151
R $100.00 0.0000000000% 0.0000000000% 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




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
06/2004 DISTRIBUTION REPORT
SERIES: AMAC 0313
WEIGHTED AVERAGE PC RATE: 5.46251%
WEIGHTED AVERAGE MATURITY: 351.48539
WEIGHTED AVERAGE LOAN AGE: 7.19139
POOL NUMBER: 2302
ISSUE DATE: 12/23/2003
CERTIFICATE BALANCE AT ISSUE: $354,678,057.76
  TOTAL NUMBER
OF MORTAGES
CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE)
CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 603   $294,883,641.98
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $310,498.40  
Unscheduled Principal Collection/Reversals   $57,816.06  
Liquidations-in-full 14 $6,666,245.68  
Subsequent Recoveries   $0.00  
Net principal Distributed   $7,034,560.14 -$7,034,560.14
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 589   $287,849,081.84
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $1,462,742.23  
 
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  
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
06/2004 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES
CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE)
CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $120,404.78  
 
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:   $8,376,897.59  




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
06/2004 DISTRIBUTION REPORT
SERIES: AMAC 0313
WEIGHTED AVERAGE PC RATE: 5.46251%
WEIGHTED AVERAGE MATURITY: 351.48539
WEIGHTED AVERAGE LOAN AGE: 7.19139
POOL NUMBER: ALL
ISSUE DATE: 12/23/2003
CERTIFICATE BALANCE AT ISSUE: $354,678,057.76
  TOTAL NUMBER
OF MORTAGES
CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE)
CERTIFICATE BALANCE
OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END: 603   $294,883,641.98
PRINCIPAL POOL COLLECTION(S):      
Scheduled Principal Collection Due Current Month   $310,498.40  
Unscheduled Principal Collection/Reversals   $57,816.06  
Liquidations-in-full 14 $6,666,245.68  
Subsequent Recoveries   $0.00  
Net principal Distributed   $7,034,560.14 -$7,034,560.14
 
CAPITAL LOSS (PRINCIPAL WRITTEN OFF):     $0.00
 
BALANCE CURRENT FISCAL MONTH-END: 589   $287,849,081.84
 
SCHEDULED INTEREST AT MORTGAGE RATE:   $1,462,742.23  
 
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  
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
06/2004 DISTRIBUTION REPORT
  TOTAL NUMBER
OF MORTAGES
CERTIFICATE ACCOUNT
ACTIVITY (@ PCRATE)
CERTIFICATE BALANCE
OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:   $120,404.78  
 
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:   $8,376,897.59  




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
 
Distribution by Group
Pool ID Principal Interest Total  
Pool - 2302 $7,034,560.14 $1,342,337.45 $8,376,897.59  
Aggregate $7,034,560.14 $1,342,337.45 $8,376,897.59  
 
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 - 2302 $294,883,641.98 603 14 589 $287,849,081.84 $310,498.40 $6,666,245.68 $57,816.06 $7,034,560.14
Aggregate $294,883,641.98 603 14 589 $287,849,081.84 $310,498.40 $6,666,245.68 $57,816.06 $7,034,560.14
 
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 - 2302 4 $1,641,959.28 0 $0.00 0 $0.00 1 $545,825.77  
Aggregate 4 $1,641,959.28 0 $0.00 0 $0.00 1 $545,825.77  
 
Foreclosure and REO Information by Group
Pool ID Foreclosure Count Sched End Balance REO Count Sched End Balance
Pool - 2302 0 $0.00 0 $0.00
Aggregate 0 $0.00 0 $0.00
 
Aggregate Loss Amounts by Group
Pool ID Count Loss Amount  
Group 1(2302) 0 $0.00  
Aggregate 0 $0.00  




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
 
INSURANCE RESERVES - Group 1(2302)
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 $2,057,133.00 $0.00 $0.00 $0.00 $2,057,133.00
Bankruptcy Bond
Single-Units $50,000.00 $0.00 $0.00 $0.00 $50,000.00
Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00
Mortgage Repurchase $3,546,780.00 $0.00 $0.00 $0.00 $3,546,780.00
 
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 $2,057,133.00 $0.00 $0.00 $0.00 $2,057,133.00
Bankruptcy Bond
Single-Units $50,000.00 $0.00 $0.00 $0.00 $50,000.00
Multi-Units $0.00 $0.00 $0.00 $0.00 $0.00
Mortgage Repurchase $3,546,780.00 $0.00 $0.00 $0.00 $3,546,780.00




WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0313
Distribution Date: 06/25/2004
 
The Subordinate Certificates provide, to the limited extent described in the Prospectus Supplement, credit support, as well as special hazard, bankruptcy, and fraud coverage to certain Certificates. The "Prospectus Supplement" is that certain Prospectus Supplement, dated December 23,2003 to that certain Prospectus Supplement, dated January 23,2003, to which certain certificates were offered. The special hazard, bankruptcy, and Fraud coverage (collectively, "Credit Enhancements") provided by the Subordinate 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 M,B1,B2,B3,B4,B5 Certificatesimmediately after the principal and interest distribution on 200406 are as follows:
Class Class Principal Balance
M $5,463,655.97
B1 $2,114,963.21
B2 $1,057,481.61
B3 $704,987.74
B4 $528,740.81
B5 $528,741.87
Total $10,398,571.20
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 $2,057,133.00, $50,000.00, $3,546,780.00 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."