WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003

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	000780ML7	$97,300,000.00	$96,778,647.20	4.2500000000%	4.2500000000%	$342,757.71	$550,762.57	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$893,520.28	$96,227,884.63
A2	000780MM5	$31,717,181.00	$31,547,234.84	5.5000000000%	5.5000000000%	$144,591.49	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$144,591.49	$31,367,701.06
A3	000780MN3	$23,937,000.00	$23,937,000.00	5.5000000000%	5.5000000000%	$109,711.25	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$109,711.25	$23,937,000.00
A4	000780MP8	$24,396,200.00	$24,396,200.00	5.5000000000%	5.5000000000%	$111,815.92	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$111,815.92	$24,396,200.00
A5	000780MQ6	$3,297,333.00	$3,297,333.00	5.5000000000%	5.5000000000%	$15,112.78	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$15,112.78	$3,297,333.00
A6	000780MR4	$13,080,887.00	$13,080,887.00	6.0000000000%	6.0000000000%	$65,404.44	$48,617.42	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$114,021.86	$13,032,269.58
A7	000780MS2	$6,012,033.00	$6,012,033.00	6.0000000000%	6.0000000000%	$30,060.17	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$30,060.17	$6,012,033.00
A8	000780MT0	$12,510,712.00	$12,510,712.00	6.0000000000%	6.0000000000%	$62,553.56	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$62,553.56	$12,510,712.00
A9	000780MU7	$33,455,515.00	$33,455,515.00	6.0000000000%	6.0000000000%	$167,277.58	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$167,277.58	$33,455,515.00
A10	000780MV5	$11,000,000.00	$11,000,000.00	6.0000000000%	6.0000000000%	$55,000.00	$40,883.44	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$95,883.44	$10,959,116.56
A11	000780MW3	$3,000,000.00	$3,000,000.00	6.0000000000%	6.0000000000%	$15,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$15,000.00	$3,000,000.00
A12	000780MX1	$6,000,000.00	$6,000,000.00	6.0000000000%	6.0000000000%	$30,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$30,000.00	$6,000,000.00
A13	000780MY9	$7,732,650.00	$7,732,650.00	0.0000000000%	0.0000000000%	$0.00	$8,136.44	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$8,136.44	$7,724,513.56
A14	000780MZ6	$35,213,000.00	$35,024,321.73	4.0000000000%	4.0000000000%	$116,747.74	$199,321.71	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$316,069.45	$34,825,000.02
AP	000780NA0	$18,962,260.81	$18,912,167.05	0.0000000000%	0.0000000000%	$0.00	$64,414.20	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$64,414.20	$18,847,752.85
AX	000780NB8	$22,226.24	$22,187.49	5.5000000000%	5.5000000000%	$101.69	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$101.69	$22,160.21
M	000780NC6	$3,639,951.00	$3,631,824.15	5.5000000000%	5.5000000000%	$16,645.86	$4,095.74	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$20,741.60	$3,627,728.41
B1	000780ND4	$1,668,310.00	$1,664,585.20	5.5000000000%	5.5000000000%	$7,629.35	$1,877.21	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$9,506.56	$1,662,707.99
B2	000780NE2	$788,656.00	$786,895.18	5.5000000000%	5.5000000000%	$3,606.60	$887.41	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$4,494.01	$786,007.77
B3	000780NG7	$424,660.00	$423,711.87	5.5000000000%	5.5000000000%	$1,942.01	$477.84	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$2,419.85	$423,234.03
B4	000780NH5	$454,993.00	$453,977.14	5.5000000000%	5.5000000000%	$2,080.73	$511.97	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$2,592.70	$453,465.17
B5	000780NJ1	$454,997.30	$453,981.44	5.5000000000%	5.5000000000%	$2,080.75	$512.05	$0.00	$0.00	$0.00	$0.00	$0.00	$0.08	$0.00	$2,592.80	$453,469.47
R	000780NF9	$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
A10_ROUND	XXXXXXXXX	$11,000,000.00	$11,000,000.00	6.0000000000%	6.0000000000%	$55,000.00	$41,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$96,000.00	$10,959,000.00
A11_ROUND	XXXXXXXXX	$3,000,000.00	$3,000,000.00	6.0000000000%	6.0000000000%	$15,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$15,000.00	$3,000,000.00
A12_ROUND	XXXXXXXXX	$6,000,000.00	$6,000,000.00	6.0000000000%	6.0000000000%	$30,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$30,000.00	$6,000,000.00
Total		$303,329,258.11	$302,552,440.96			$1,300,119.61	$920,498.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.08	$0.00	$2,220,617.61	$301,631,943.04

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003

Class	Orig Face	Beg Bal	Prin Loss	Prin Reimbursed	Subsequent Recoveries	Deferred Interest	Total Prin	End Cert Pct	End Cert Bal
A1	$97,300,000.00	$96,778,647.20	$0.00	$0.00	$0.00	$0.00	$550,762.57	0.9889813425	$96,227,884.63
A2	$31,717,181.00	$31,547,234.84	$0.00	$0.00	$0.00	$0.00	$0.00	0.9889813682	$31,367,701.06
A3	$23,937,000.00	$23,937,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$23,937,000.00
A4	$24,396,200.00	$24,396,200.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$24,396,200.00
A5	$3,297,333.00	$3,297,333.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$3,297,333.00
A6	$13,080,887.00	$13,080,887.00	$0.00	$0.00	$0.00	$0.00	$48,617.42	0.9962833239	$13,032,269.58
A7	$6,012,033.00	$6,012,033.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$6,012,033.00
A8	$12,510,712.00	$12,510,712.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$12,510,712.00
A9	$33,455,515.00	$33,455,515.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$33,455,515.00
A10	$11,000,000.00	$11,000,000.00	$0.00	$0.00	$0.00	$0.00	$40,883.44	0.9962833236	$10,959,116.56
A11	$3,000,000.00	$3,000,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$3,000,000.00
A12	$6,000,000.00	$6,000,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$6,000,000.00
A13	$7,732,650.00	$7,732,650.00	$0.00	$0.00	$0.00	$0.00	$8,136.44	0.9989477812	$7,724,513.56
A14	$35,213,000.00	$35,024,321.73	$0.00	$0.00	$0.00	$0.00	$199,321.71	0.9889813427	$34,825,000.02
AP	$18,962,260.81	$18,912,167.05	$0.00	$0.00	$0.00	$0.00	$64,414.20	0.9939612707	$18,847,752.85
AX	$22,226.24	$22,187.49	$0.00	$0.00	$0.00	$0.00	$0.00	0.9970291871	$22,160.21
M	$3,639,951.00	$3,631,824.15	$0.00	$0.00	$0.00	$0.00	$4,095.74	0.9966421004	$3,627,728.41
B1	$1,668,310.00	$1,664,585.20	$0.00	$0.00	$0.00	$0.00	$1,877.21	0.9966421049	$1,662,707.99
B2	$788,656.00	$786,895.18	$0.00	$0.00	$0.00	$0.00	$887.41	0.9966420974	$786,007.77
B3	$424,660.00	$423,711.87	$0.00	$0.00	$0.00	$0.00	$477.84	0.9966420901	$423,234.03
B4	$454,993.00	$453,977.14	$0.00	$0.00	$0.00	$0.00	$511.97	0.9966420802	$453,465.17
B5	$454,997.30	$453,981.44	$0.00	$0.08	$0.00	$0.00	$512.05	0.9966421119	$453,469.47
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
A10_ROUND	$11,000,000.00	$11,000,000.00	$0.00	$0.00	$0.00	$0.00	$41,000.00	0.9962727273	$10,959,000.00
A11_ROUND	$3,000,000.00	$3,000,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$3,000,000.00
A12_ROUND	$6,000,000.00	$6,000,000.00	$0.00	$0.00	$0.00	$0.00	$0.00	1.0000000000	$6,000,000.00
Total	$303,329,258.11	$302,552,440.96	$0.00	$0.08	$0.00	$0.00	$920,498.00	0.9944043806	$301,631,943.04

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003
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	$97,300,000.00	994.64180062	0.00000000	0.00000000	0.00000000	0.00000000	5.66045807	0.9889813425	988.98134255
A2	$31,717,181.00	994.64182646	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.9889813682	988.98136817
A3	$23,937,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A4	$24,396,200.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A5	$3,297,333.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A6	$13,080,887.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	3.71667609	0.9962833239	996.28332391
A7	$6,012,033.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A8	$12,510,712.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A9	$33,455,515.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A10	$11,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	3.71667636	0.9962833236	996.28332364
A11	$3,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A12	$6,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A13	$7,732,650.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.05221884	0.9989477812	998.94778116
A14	$35,213,000.00	994.64180076	0.00000000	0.00000000	0.00000000	0.00000000	5.66045807	0.9889813427	988.98134269
AP	$18,962,260.81	997.35823906	0.00000000	0.00000000	0.00000000	0.00000000	3.39696836	0.9939612707	993.96127070
AX	$22,226.24	998.25656521	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.9970291871	997.02918712
M	$3,639,951.00	997.76731885	0.00000000	0.00000000	0.00000000	0.00000000	1.12521844	0.9966421004	996.64210040
B1	$1,668,310.00	997.76732142	0.00000000	0.00000000	0.00000000	0.00000000	1.12521654	0.9966421049	996.64210488
B2	$788,656.00	997.76731553	0.00000000	0.00000000	0.00000000	0.00000000	1.12521809	0.9966420974	996.64209744
B3	$424,660.00	997.76731974	0.00000000	0.00000000	0.00000000	0.00000000	1.12522960	0.9966420901	996.64209014
B4	$454,993.00	997.76730631	0.00000000	0.00000000	0.00000000	0.00000000	1.12522610	0.9966420802	996.64208021
B5	$454,997.30	997.76732741	0.00000000	0.00017583	0.00000000	0.00000000	1.12539129	0.9966421119	996.64211194
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
A10_ROUND	$11,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	3.72727273	0.9962727273	996.27272727
A11_ROUND	$3,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000
A12_ROUND	$6,000,000.00	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	1.0000000000	1,000.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003

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	$97,300,000.00	4.2500000000%	4.2500000000%	$96,778,647.20	$342,757.71	$0.00	$0.00	$0.00	$342,757.71
A2	$31,717,181.00	5.5000000000%	5.5000000000%	$31,547,234.84	$144,591.49	$0.00	$0.00	$0.00	$144,591.49
A3	$23,937,000.00	5.5000000000%	5.5000000000%	$23,937,000.00	$109,711.25	$0.00	$0.00	$0.00	$109,711.25
A4	$24,396,200.00	5.5000000000%	5.5000000000%	$24,396,200.00	$111,815.92	$0.00	$0.00	$0.00	$111,815.92
A5	$3,297,333.00	5.5000000000%	5.5000000000%	$3,297,333.00	$15,112.78	$0.00	$0.00	$0.00	$15,112.78
A6	$13,080,887.00	6.0000000000%	6.0000000000%	$13,080,887.00	$65,404.44	$0.00	$0.00	$0.00	$65,404.44
A7	$6,012,033.00	6.0000000000%	6.0000000000%	$6,012,033.00	$30,060.17	$0.00	$0.00	$0.00	$30,060.17
A8	$12,510,712.00	6.0000000000%	6.0000000000%	$12,510,712.00	$62,553.56	$0.00	$0.00	$0.00	$62,553.56
A9	$33,455,515.00	6.0000000000%	6.0000000000%	$33,455,515.00	$167,277.58	$0.00	$0.00	$0.00	$167,277.58
A10	$11,000,000.00	6.0000000000%	6.0000000000%	$11,000,000.00	$55,000.00	$0.00	$0.00	$0.00	$55,000.00
A11	$3,000,000.00	6.0000000000%	6.0000000000%	$3,000,000.00	$15,000.00	$0.00	$0.00	$0.00	$15,000.00
A12	$6,000,000.00	6.0000000000%	6.0000000000%	$6,000,000.00	$30,000.00	$0.00	$0.00	$0.00	$30,000.00
A13	$7,732,650.00	0.0000000000%	0.0000000000%	$7,732,650.00	$0.00	$0.00	$0.00	$0.00	$0.00
A14	$35,213,000.00	4.0000000000%	4.0000000000%	$35,024,321.73	$116,747.74	$0.00	$0.00	$0.00	$116,747.74
AP	$18,962,260.81	0.0000000000%	0.0000000000%	$18,912,167.05	$0.00	$0.00	$0.00	$0.00	$0.00
AX	$22,226.24	5.5000000000%	5.5000000000%	$22,187.49	$101.69	$0.00	$0.00	$0.00	$101.69
M	$3,639,951.00	5.5000000000%	5.5000000000%	$3,631,824.15	$16,645.86	$0.00	$0.00	$0.00	$16,645.86
B1	$1,668,310.00	5.5000000000%	5.5000000000%	$1,664,585.20	$7,629.35	$0.00	$0.00	$0.00	$7,629.35
B2	$788,656.00	5.5000000000%	5.5000000000%	$786,895.18	$3,606.60	$0.00	$0.00	$0.00	$3,606.60
B3	$424,660.00	5.5000000000%	5.5000000000%	$423,711.87	$1,942.01	$0.00	$0.00	$0.00	$1,942.01
B4	$454,993.00	5.5000000000%	5.5000000000%	$453,977.14	$2,080.73	$0.00	$0.00	$0.00	$2,080.73
B5	$454,997.30	5.5000000000%	5.5000000000%	$453,981.44	$2,080.75	$0.00	$0.00	$0.00	$2,080.75
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
A10_ROUND	$11,000,000.00	6.0000000000%	6.0000000000%	$11,000,000.00	$55,000.00	$0.00	$0.00	$0.00	$55,000.00
A11_ROUND	$3,000,000.00	6.0000000000%	6.0000000000%	$3,000,000.00	$15,000.00	$0.00	$0.00	$0.00	$15,000.00
A12_ROUND	$6,000,000.00	6.0000000000%	6.0000000000%	$6,000,000.00	$30,000.00	$0.00	$0.00	$0.00	$30,000.00
Total	$303,329,258.11			$302,552,440.96	$1,300,119.61	$0.00	$0.00	$0.00	$1,300,119.61

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003
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	$97,300,000.00	4.2500000000%	4.2500000000%	994.64180062	3.52268972	0.00000000	0.00000000	0.00000000	3.52268972
A2	$31,717,181.00	5.5000000000%	5.5000000000%	994.64182646	4.55877494	0.00000000	0.00000000	0.00000000	4.55877494
A3	$23,937,000.00	5.5000000000%	5.5000000000%	1,000.00000000	4.58333333	0.00000000	0.00000000	0.00000000	4.58333333
A4	$24,396,200.00	5.5000000000%	5.5000000000%	1,000.00000000	4.58333347	0.00000000	0.00000000	0.00000000	4.58333347
A5	$3,297,333.00	5.5000000000%	5.5000000000%	1,000.00000000	4.58333447	0.00000000	0.00000000	0.00000000	4.58333447
A6	$13,080,887.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000038	0.00000000	0.00000000	0.00000000	5.00000038
A7	$6,012,033.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000083	0.00000000	0.00000000	0.00000000	5.00000083
A8	$12,510,712.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000
A9	$33,455,515.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000015	0.00000000	0.00000000	0.00000000	5.00000015
A10	$11,000,000.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000
A11	$3,000,000.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000
A12	$6,000,000.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000
A13	$7,732,650.00	0.0000000000%	0.0000000000%	1,000.00000000	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
A14	$35,213,000.00	4.0000000000%	4.0000000000%	994.64180076	3.31547269	0.00000000	0.00000000	0.00000000	3.31547269
AP	$18,962,260.81	0.0000000000%	0.0000000000%	997.35823906	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000
AX	$22,226.24	5.5000000000%	5.5000000000%	998.25656521	4.57522280	0.00000000	0.00000000	0.00000000	4.57522280
M	$3,639,951.00	5.5000000000%	5.5000000000%	997.76731885	4.57310002	0.00000000	0.00000000	0.00000000	4.57310002
B1	$1,668,310.00	5.5000000000%	5.5000000000%	997.76732142	4.57310092	0.00000000	0.00000000	0.00000000	4.57310092
B2	$788,656.00	5.5000000000%	5.5000000000%	997.76731553	4.57309651	0.00000000	0.00000000	0.00000000	4.57309651
B3	$424,660.00	5.5000000000%	5.5000000000%	997.76731974	4.57309377	0.00000000	0.00000000	0.00000000	4.57309377
B4	$454,993.00	5.5000000000%	5.5000000000%	997.76730631	4.57310332	0.00000000	0.00000000	0.00000000	4.57310332
B5	$454,997.30	5.5000000000%	5.5000000000%	997.76732741	4.57310406	0.00000000	0.00000000	0.00000000	4.57310406
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
A10_ROUND	$11,000,000.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000
A11_ROUND	$3,000,000.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000
A12_ROUND	$6,000,000.00	6.0000000000%	6.0000000000%	1,000.00000000	5.00000000	0.00000000	0.00000000	0.00000000	5.00000000

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: AMAC 0311
WEIGHTED AVERAGE PC RATE: 5.15661%
WEIGHTED AVERAGE MATURITY: 355.09828
WEIGHTED AVERAGE LOAN AGE: 4.01334
POOL NUMBER: 2221
ISSUE DATE: 09/30/2003
CERTIFICATE BALANCE AT ISSUE: $303,329,258.11
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	627		$302,552,440.96
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$341,958.10
Unscheduled Principal Collection/Reversals		$63,275.42
Liquidations-in-full	1	$515,264.40
Subsequent Recoveries		$0.00
Net principal Distributed		$920,497.92	-$920,497.92

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	626		$301,631,943.04

SCHEDULED INTEREST AT MORTGAGE RATE:		$1,374,675.90

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
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$74,556.21

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:		$2,220,617.61

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
MASTER SERVICING
MORTGAGE PASS-THROUGH CERTIFICATES
12/2003 DISTRIBUTION REPORT
SERIES: AMAC 0311
WEIGHTED AVERAGE PC RATE: 5.15661%
WEIGHTED AVERAGE MATURITY: 355.09828
WEIGHTED AVERAGE LOAN AGE: 4.01334
POOL NUMBER: ALL
ISSUE DATE: 09/30/2003
CERTIFICATE BALANCE AT ISSUE: $303,329,258.11
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
BALANCES FROM LAST FISCAL MONTH-END:	627		$302,552,440.96
PRINCIPAL POOL COLLECTION(S):
Scheduled Principal Collection Due Current Month		$341,958.10
Unscheduled Principal Collection/Reversals		$63,275.42
Liquidations-in-full	1	$515,264.40
Subsequent Recoveries		$0.00
Net principal Distributed		$920,497.92	-$920,497.92

CAPITAL LOSS (PRINCIPAL WRITTEN OFF):			$0.00

BALANCE CURRENT FISCAL MONTH-END:	626		$301,631,943.04

SCHEDULED INTEREST AT MORTGAGE RATE:		$1,374,675.90

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
12/2003 DISTRIBUTION REPORT
	TOTAL NUMBER OF MORTAGES	CERTIFICATE ACCOUNT ACTIVITY (@ PCRATE)	CERTIFICATE BALANCE OUTSTANDING
SCHEDULED SERVICING FEE EXPENSES:		$74,556.21

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:		$2,220,617.61

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003

Distribution by Group
Pool ID		Principal		Interest		Total
Pool - 2221		$920,497.92		$1,300,119.69		$2,220,617.61
Aggregate		$920,497.92		$1,300,119.69		$2,220,617.61

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 - 2221	$302,552,440.96	627	1	626	$301,631,943.04	$341,958.10	$515,264.40	$63,275.42	$920,497.92
Aggregate	$302,552,440.96	627	1	626	$301,631,943.04	$341,958.10	$515,264.40	$63,275.42	$920,497.92

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 - 2221	37	$19,084,333.52	3	$1,254,901.39	0	$0.00	0	$0.00
Aggregate	37	$19,084,333.52	3	$1,254,901.39	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 - 2221		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(2221)			0			$0.00
Aggregate			0			$0.00

WASHINGTON MUTUAL MORTGAGE SECURITIES CORP.
Series: AMAC.0311
Distribution Date: 12/26/2003

INSURANCE RESERVES - Group 1(2221)
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: AMAC.0311
Distribution Date: 12/26/2003

The Group 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 September 24,2003 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 200312 are as follows:

Class			Class Principal Balance
M			$3,627,728.41
B1			$1,662,707.99
B2			$786,007.77
B3			$423,234.03
B4			$453,465.17
B5			$453,469.47
Total			$7,406,612.84
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."

ABN AMRO MORTGAGE MULTI-CLASS MOR PAS THR CER SER 2003-11 8-K