Service difficulty report · Angle · Boeing 7378H4

Difficulty date
May 17, 2022
Submitted
June 10, 2022
Operation
Air carrier
Aircraft
N8690A
Make and model
Boeing 7378H4
Aircraft serial
36916
Aircraft time
20,154 hours, 9,318 cycles
Part
Angle
Part number
143A7501231
Condition
Corroded
Location
Fwd Cargo Bay
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FWD CARGO COMPARTMENT FLOOR AREA STA 500C TO STA 500D; LBL 24; WL 156; Z-ANGLE IS CORRODED. A177-014 / [01] REMOVED CORROSION ON Z ANGLE IAW SRM 51-10-02-0G-0 ITEM 15;[02] EVALUATED ALLOWABLE LIMITS ..040 ORIGINAL 'T' .030 REMAINING .010 LOSS FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2 TOOL USED AAR UT #36644 DUE 08/20/22;[03] VERIFIED STEPS 1 AND 2 ARE COMPLETE;[04] VERIFIED STEPS 1; 2 AND 3 FOUND TO BE OUT OF LIMITS;[05] CUT OUT DAMAGE SECTION OF Z ANGLE BETWEEN STA 500C-500B ANG 500D- 500E AND REMOVED IAW SRM 53-00-53-2R-5 REPAIR 5;[06] VERIFIED STEP 5 IS COMPLETE;[07] VERIFIED MATERIAL ID FOR Z ANGLE REPAIR PARTS IS BAC1496-444-7075 T6 TAG # A67392 IAW SRM 53-00-53-2R-5 REPAIR 5;[08] VERIFIED STEP 7;[09] VERIFIED ITEMS 5 AND 7;[10] STARTED TO FABRICATE Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[11] FINISHED FABRICATE Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[12] VERIFIED STEPS;[13] VERIFIED ITEM 11; OK TO TREAT AND PRIME;[14] APPLIED ALODINE AND PRIME IAW SRM 51-20-01-00G-0 AND AMM 51-21-72-370-804;[15] VERIFY STEP 14;[16] OK GIVEN TO INSTALL REPAIR PARTS;[17] INSTALLED Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[18] VERIFIED ITEM 17;[19] OK TO CIC;[20] APPLIED CIC IAW SRM 51-21-91-602-802;[21] AMM 51-21-91-620-802;[22] ALL WORK C/W<BR>AUDIT C/W

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