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  TB 1-1520-238-30-20
11. SUPPLY/PARTS:
Nomenclature
Part Number
National Stock Number
Rubber Sheet
3M 8641 Tape (blk.)
9390-01-382-8344
Primer
3M Primer #86
6850-01-326-1607
Sealant
AMS-S-8802 CLB-2
8030-00-152-0013
Corrosion Resistant Coating
MIL-C-5541 CL 1A
8030-00-142-9272
Talcum Powder
Johnson &Johnson 3022
8510-00-817-0295
Ink, Permanent Marking
30001 BLACK
7520-00-312-6124
Rivets
NAS1097 (Size/dash# TBD
during rework)
Rivets
NAS 1738 Bx (Size TBD dur-
ing rework)
IGB Fairing Stiffener, LHS
7-511122620-7
NSN unavailable
IGB Fairing Stiffener, RHS
7-511122620-9
NSN unavailable
Satin Cloth
SAE-AMS-C-9084
8305-01-007-2672
Adhesive
EA9313
8040-01-107-4000
Adhesive
EA9309.3NA
8040-01-163-3481
Primer, Top Coat, Exterior Green
MIL-C-46168
8010-01-141-2420
Aluminum Alloy Sheet
6061-T4 Sheet, 0.080-0.090
9535-00-232-7554
Aluminum Alloy Tube
0.438" QQ--A--225/8, 6061--T6
NSN unavailable
Seal, Rubber Ext.
HS4028-2724
NSN unavailable
Trichloroethane
O-T-620
7510-00-527-1458
Abrasive Mat (Scotchbrite)
A-A-58065
5305-00-967-5092
Coating, Chemical
MIL-C-81706
8030-01-341-8609
Primer
MIL-PRF-23377
8010-01-416-6556
Adhesive
EC1300L (SG1300L)
8040-00-165-8614
Lint Free Cloth
Anti-Chafe Tape
12. SPECIAL TOOLS, JIGS, AND FIXTURES REQUIRED FOR INSPECTION: N/A
13.1. Safe helicopter IAW applicable maintenance manual: see reference item 18.1, 18.2 or 18.3.
13.2. Inspect the diffuser and the tailboom area directly underneath the diffuser. If tailboom chaffing is
identified then proceed with paragraph 13 and replace diffuser with diffuser modified IAW paragraph 14. If
no tailboom chaffing is identified and no diffuser cracking is found then inspection is complete. If diffuser
cracking is found then repair/modify current diffuser IAW paragraph 14 or replace diffuser. If unable to replace
cracked diffuser due to extenuating circumstance, contact technical POC listed in paragraph 20.
13.3. Remove IGB Diffuser per applicable maintenance manual: see reference item 18.1, 18.2 or 18.3.
13.4. Radius two (2) areas as indicated on figure 9 if required. Touch-up all reworked areas using
MIL-C-5541, Class 1A (corrosion resistant coating) and MIL-PRF-85582, Type 1, Class 2 (paint primer).
13.5. Inspect depth of damage to skin. See Figure 1 for possible chafe areas. If damage is greater than 10%
(.006 inch) of fuselage skin thickness, contact AMCOM Engineering or Boeing Engineering. If damage is less
than 10% (.006 inch) of skin thickness, blend to assure smooth transitions without deepening damaged area.
3
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