47-AWL-09: ALI
TASK 47-42-03-420-801
3. NGS Oxygen Sensor Installation
(Figure 401)
A. General
(1) This task installs the NGS oxygen sensor.
(2) This task has one or more steps which are a means to satisfy Airworthiness Limitation
Instruction (ALI) requirements. An ALI note will follow the step to which it applies. Any step or
sub-step that precedes or follows an ALI identified step is not subject to the ALI requirement.
NOTE: This is applicable to Airworthiness Limitation 47-AWL-09.
B. References
Reference Title
47-00-00-800-801 Ground Operation of the Nitrogen Generation System (P/B 201)
SWPM 20-20-10 Standard Wiring Practices Manual
C. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
COM-1550 Bonding Meters - Approved, Intrinsically Safe (Approved for use in
Class I, Divisions I & II hazardous (classified) locations. Outside
these hazardous locations, COM-614 can be used in lieu of
COM-1550).
737-600, -700, -800
Part #: 620LK Supplier: 1CRL2
Part #: M1 Supplier: 3AD17
Part #: T477W (C15292) Supplier: 01014
Opt Part #: M1B Supplier: 3AD17
D. Consumable Materials
Reference Description Specification
B00130 Alcohol - Isopropyl TT-I-735
G00018 Nitrogen - Gaseous, Pressurizing, 99.5
Percent Pure
A-A-59503 Type I Grade
B, MIL-PRF-27401 Type
I Grade A
G00034 Cotton Wiper - Process Cleaning Absorbent
Wiper (Cheesecloth, Gauze)
BMS15-5 Class A
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-42-03
Page 406
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ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details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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