SUBTASK 47-21-07-010-001
(4) Do this task: Center Tank Access Door Removal, TASK 28-11-31-000-801.
SUBTASK 47-21-07-010-004
ILF 402, 452, 509, 510, 523, 525-528, 568, 569, 576, 577, 581, 583, 585, 588-590, 592-599, 601-603,
606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 971, 980-999; ILF 101, 151, 156-199, 301,
304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429,
451, 501-504, 507, 508, 512-514, 516, 518, 524, 531-533, 535-537, 541, 542, 552-556, 560-562, 567,
571-575, 671, 672, 686, 703, 707-710, 803-813, 821, 822, 831, 832, 836, 837, 841, 842, 851, 852,
854-858, 861-863, 871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003
WARNING
DO NOT BREATHE THE AIR FROM THE FUEL TANK UNTIL YOU MAKE IT
SAFE. THE NITROGEN GENERATION SYSTEM DECREASES THE OXYGEN
IN THE AIR. IF YOU BREATHE AIR THAT DOES NOT HAVE SUFFICIENT
OXYGEN, DANGEROUS HEALTH CONDITIONS CAN QUICKLY OCCUR.
DANGEROUS HEALTH CONDITIONS INCLUDE NAUSEA,
UNCONSCIOUSNESS, AND CONVULSIONS. IF THE OXYGEN LEVEL OF
THE AIR THAT YOU BREATHE IS VERY LOW, IT CAN KILL YOU.
ILF 402, 451, 452, 494-500, 503, 504, 509, 510, 514, 523-528, 541, 560-564, 567-569, 574-577, 581,
583, 585, 588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 691-699, 832-835,
838, 856-858, 947, 948, 968-973, 980-999; ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315,
317-319, 323, 331-399, 401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429, 501, 502, 507, 508, 512,
513, 516, 518, 531-533, 535-537, 542, 552-556, 571-573, 686, 703, 707-710, 803-813, 821, 822, 831,
836, 837, 841, 842, 851, 852, 854, 855, 861-863, 871-874 POST SB 737-47-1002 OR POST SB
737-47-1003 OR POST SB 737-47-1015; ILF 491-493, 515, 519, 520, 530, 557, 559 POST SB
737-47-1002 OR POST SB 737-47-1015
(5) Open this access panel:
Number Name/Location
531AB Center Tank Access Door - Wing Station 168
SUBTASK 47-21-07-030-001
(6) Go into the left wheel well.
(a) Go to the flame arrestor [1] location.
NOTE: The flame arrestor [1] is on the rear spar.
ILF 494-500, 563, 564; ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399,
401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429, 501, 502, 507, 508, 512, 513, 516, 518, 531-533,
535-537, 542, 552-556, 571-573, 686, 703, 707-710, 803-813, 821, 822, 831, 836, 837, 841, 842, 851,
852, 854, 855, 861-863, 871-874 POST SB 737-47-1002 AND PRE SB 737-47-1003; ILF 451, 503, 504,
514, 524, 541, 560-562, 567, 574, 575, 671, 672, 832, 856-858, 947, 948, 968-970, 972, 973 PRE SB
737-47-1003; ILF 491-493, 515, 519, 520, 530, 557, 559 POST SB 737-47-1002
SUBTASK 47-21-07-820-001
(7) Put the 1 quart (1 l) oil/fuel resistant container, STD-195, below the flame arrestor [1].
SUBTASK 47-21-07-020-001
(8) Disconnect the pressure seal cap [8] from the flame arrestor [1].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-21-07
Page 404
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 402, 451, 452, 494-500, 503, 504, 509, 510, 514, 523-528, 541, 560-564, 567-569, 574-577, 581, 583, 585,
588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 691-699, 832-835, 838, 856-858, 947,
948, 968-973, 980-999; ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405,
406, 409, 410, 412, 416, 424, 425, 427-429, 501, 502, 507, 508, 512, 513, 516, 518, 531-533, 535-537, 542,
552-556, 571-573, 686, 703, 707-710, 803-813, 821, 822, 831, 836, 837, 841, 842, 851, 852, 854, 855, 861-863,
871-874 POST SB 737-47-1002 OR POST SB 737-47-1003 OR POST SB 737-47-1015; ILF 491-493, 515,
519, 520, 530, 557, 559 POST SB 737-47-1002 OR POST SB 737-47-1015
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