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 (Continued)
C. Location Zones
Zone Area
113 Area Above and Outboard of Nose Landing Gear Wheel Well - Left
114 Area Above and Outboard of Nose Landing Gear Wheel Well - Right
D. Prepare for the Operational Test
SUBTASK 30-31-00-860-015
(1) Make sure the PROBE HEAT A and B switches are set to the AUTO position.
(2) Supply electrical power to the airplane. To supply power, do this task: Supply External Power,
TASK 24-22-00-860-813.
SUBTASK 30-31-00-010-001
(3) Make sure there are no protective covers on the air data sensors.
E. AUTO Air Data Sensor heating Operational Test
SUBTASK 30-31-00-750-001
WARNING
KEEP PERSONNEL, AND EQUIPMENT AWAY FROM THE PITOT PROBES,
TOTAL AIR TEMPERATURE PROBE, AND ANGLE-OF-ATTACK VANE. THESE
COMPONENTS WILL BECOME VERY HOT. THEY CAN CAUSE INJURIES TO
PERSONNEL, AND DAMAGE TO EQUIPMENT.
(1) Do this check of the following lights on the window and pitot heat module:
(a) Make sure the CAPT PITOT, L ELEV PITOT, L ALPHA VANE,TEMP PROBE, F/O PITOT,
R ELEV PITOT, R ALPHA VANE, and AUX PITOT lights on the window and pitot heat
module go on.
(2) Test the AUTO position of the PROBE HEAT A and B switches.
NOTE: Only one engine should be operating while performing this test of the AUTO position of
the PROBE HEAT switches. This is done to test the full health of the system.
(a) Do this task for engine 1: Start the Engine Procedure (Selection),
TASK 71-00-00-800-807-F00
(b) With the engine running, check the following lights on the window and pitot heat module:
1) Make sure the CAPT PITOT, L ELEV PITOT, L ALPHA VANE,TEMP PROBE, F/O
PITOT, R ELEV PITOT, R ALPHA VANE, and AUX PITOT lights on the window and
pitot heat module go off.
(c) Do this task for engine 1: Stop the Engine Procedure (Usual Engine Stop),
TASK 71-00-00-700-819-F00
1) Make sure the CAPT PITOT, L ELEV PITOT, L ALPHA VANE,TEMP PROBE, F/O
PITOT, R ELEV PITOT, R ALPHA VANE, and AUX PITOT lights on the window and
pitot heat module go on.
(d) Do this task for engine 2: Start the Engine Procedure (Selection),
TASK 71-00-00-800-807-F00
(e) With the engine running, check the following lights on the window and pitot heat module:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-31-00
Page 502
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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