ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 424, 425, 427-429, 507, 533, 535, 537,
556, 557, 568, 583, 588, 592-596, 671, 672, 832, 836, 837, 841, 842, 968-970, 972, 973, 980-999; ILF
412 POST SB 737-30-1046
(c) Make sure that the number 3 windows heat up to more than 65°F (18°C) but less than
105°F (41°C).
ILF ALL
SUBTASK 30-41-00-860-002
(6) Put the WINDOW HEAT TEST OVHT/PWR switch to the OVHT position for 1 second.
(a) Make sure that the OVERHEAT lights come on.
(b) Make sure that the MASTER CAUTION lights come on.
(c) Make sure that ANTI-ICE light comes on.
ILF 101, 151, 156-199, 401, 402, 405, 406, 409, 410, 412, 416, 424, 425, 427-429, 451, 452, 491-504,
507-510, 512-516, 518-520, 523-528, 530-533, 535-537, 541, 542, 552-557, 559, 560, 562-564, 567-569,
571-577, 581, 583, 585, 588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 686,
691-699, 703, 707-710, 803-813, 821, 822, 831-838, 841, 842, 851, 852, 854-858, 861-863, 871-874,
947, 948, 971
(d) Make sure that the ON lights go off in less than 70 seconds.
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 561, 968-970, 972, 973, 980-999
(e) Make sure that the OFF lights come on in less than 70 seconds.
ILF ALL
(f) Make sure that the windows start to cool.
(g) Wait until the window temperatures go below 110°F (43°C).
SUBTASK 30-41-00-860-003
(7) One switch at a time, put each WINDOW HEAT power switch in the off position for 1 second
and then put the switch in the on position.
(a) Make sure that the applicable OVERHEAT light goes off.
ILF 101, 151, 156-199, 401, 402, 405, 406, 409, 410, 412, 416, 424, 425, 427-429, 451, 452, 491-504,
507-510, 512-516, 518-520, 523-528, 530-533, 535-537, 541, 542, 552-557, 559, 560, 562-564, 567-569,
571-577, 581, 583, 585, 588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 686,
691-699, 703, 707-710, 803-813, 821, 822, 831-838, 841, 842, 851, 852, 854-858, 861-863, 871-874,
947, 948, 971
(b) Make sure that the window heat ON light comes on.
ILF 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 561, 968-970, 972, 973, 980-999
(c) Make sure that the window heat OFF light goes off.
ILF ALL
(d) Make sure that the windows begin to heat.
SUBTASK 30-41-00-860-004
(8) Press either MASTER CAUTION light.
(a) Make sure that the MASTER CAUTION light goes off.
(b) Make sure that the ANTI-ICE light goes off.
SUBTASK 30-41-00-860-005
(9) Wait 4 minutes.
SUBTASK 30-41-00-860-006
(10) Hold the window heat TEST switch to PWR.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-41-00
Page 503
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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