TASK 47-31-02-740-803
4. BDU Fault History Menu
(Figure 207)
A. General
(1) This task gives the instructions to operate the BDU control panel for the Fault History Menu.
(2) To help you navigate through the NGS BDU fault history structure, refer to Figure 207.
(3) The fault history menu allows you to look at NGS faults and correlated flight deck effects that
occurred during the last 99 flight legs. The flight leg is updated during the ground to air (WOW)
transition.
(4) Fault history can store up to 256 messages. No more than 25% of the fault history can be
allocated to a single flight leg. If a single flight leg fault allocation is full, no additional fault
records can be recorded for that flight leg. When the total allocation of faults is full, new faults
will replace the oldest fault.
B. Location Zones
Zone Area
132 Center Section Wing Box, Body Station 540.00 to Body Station 663.75 - Right
C. Access Panels
Number Name/Location
192CR ECS Access Door
192DR ECS High Pressure Access Door
D. Main Menu
SUBTASK 47-31-02-740-027
(1) Do this task: BDU Main Menu, TASK 47-31-02-740-801
(a) Push the BDU control panel up or down arrows or the NO button until FAULT HISTORY?
shows.
E. Fault History
SUBTASK 47-31-02-740-028
(1) Make sure that the display message, FAULT HISTORY? shows on the display.
SUBTASK 47-31-02-740-064
(2) Push the YES button.
(a) If NO FAULT HISTORY? shows on the display, then there are no flight leg faults
recorded.
(b) If the display message, IN PROGRESS shows on the display, followed by INVALID
FAULT HISTORY, then the BDU timed-out or the search was complete with no valid
records found.
(c) If FLIGHT LEG 0? shows on the display, then the search was successful.
SUBTASK 47-31-02-740-065
(3) When FLIGHT LEG 0? shows on the display, push the up or down arrows or the NO button.
(a) The display moves up or down the fault history list from flight leg 0, to flight leg -99.
SUBTASK 47-31-02-740-029
(4) Use the push button controls to get to the applicable flight leg.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-31-02
Page 219
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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
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