SUBTASK 30-31-00-860-005
ILF 301, 304, 308, 317, 318, 332, 496, 499, 500, 512, 557, 568, 581, 686, 803, 808-811, 813, 821, 822,
836, 837, 851, 852, 857, 858, 947, 968-971, 973 PRE SB 737-30A1063
(12) Put the PROBE HEAT switches in the OFF position.
ILF 101, 151, 156-199, 310, 314, 315, 319, 323, 331, 333-399, 401, 402, 405, 406, 409, 410, 412, 416,
424, 425, 427-429, 451, 452, 491-495, 497, 498, 501-504, 507-510, 513-516, 518-520, 523-528,
530-533, 535-537, 541, 542, 552-556, 559-564, 567, 569, 571-577, 583, 585, 588-590, 592-599,
601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 691-699, 703, 707-710, 804-807, 812, 831-835,
838, 841, 842, 854-856, 861-863, 871-874, 948, 972, 980-999; ILF 301, 304, 308, 317, 318, 332, 496,
499, 500, 512, 557, 568, 581, 686, 803, 808-811, 813, 821, 822, 836, 837, 851, 852, 857, 858, 947,
968-971, 973 POST SB 737-30A1063
(13) Put the PROBE HEAT switches in the AUTO position.
SUBTASK 30-31-00-860-014
(14) Do this task to test the AUTO position of the PROBE HEAT switches: AUTO Air Data Sensor
heating - Operational Test, TASK 30-31-00-750-801.
NOTE: It is only necessary to perform a test of the AUTO position (with engine run) after
replacement of the window/pitot heat module (P5-9). A test of the AUTO position is not
necessary following replacement of a pitot probe, AOA sensor, or TAT probe.
ILF ALL
E. Put the airplane in its normal condition.
SUBTASK 30-31-00-860-006
(1) If electrical power is not necessary, do this task: Remove External Power,
TASK 24-22-00-860-814.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-31-00
Page 507
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL