Service difficulty report · Angle · Boeing 7378H4

Difficulty date
April 28, 2022
Submitted
May 12, 2022
Operation
Air carrier
Aircraft
N8685B
Make and model
Boeing 7378H4
Aircraft serial
36723
Aircraft time
20,280 hours, 9,431 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 LH Z ANGLE CORRODED WL 156; BS 500B - 8' TO 500I ; LBL 25 A225-006 / [01] REMOVED CORROSION IAW SRM 51-10-02 10X MAGNIFY ORIGINAL THICKNESS.040 .003 MATERIAL WAS REMOVED .037 MATERIAL REMAINS FOUND TO BE IN LIMITS IAW 53-00-53-1A-2 AAR TOOL NO.36644 DUE DATE 08/20/22;[02] VERIFIED STEP IS COMPLETE;[03] CORRECTION TO ITEM 1. FOUND MATERIAL LOSS BETWEEN STATION 500C AND 500D OUT OF LIMITS WITH .031' REMAINING 40 ORIGINAL; LOSS OF .009'. AREA OUT OF LIMITS IAW 53-00-03-1A-2;[04] REMOVED DAMAGED Z ANGLE IAW SRM 53-00-53-2R-5;[05] VERIFIED STEP 4;[06] VERIFIED STEPS 1; 2; 3; 4 & 5.;[07] VERIFY MATERIAL USED FOR Z ANGLE REPAIR BAC1496-444 7075-T6 ATAG A67397 IAW SRM 53-00-53-2R-5;[08] VERIFIED STEP 7.;[09] STARTED FABBING REPAIR PARTS IAW SRM 53-00-53-2R-5;[10] FINISHED TO FABRICATE Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R -5 REPAIR 5;[11] VERIFIED STEP 10;[12] VERIFIED STEP 9;10 11<BR>OK TO TREAT AND PRIME;[13] CUT OUT AREA IS BETWEEN STA.500C-500D AND 500C-500B IAW SRM 53-00-53-2R-5 REPAIR 5;[14] APPLIED ALODINE AND PRIMER REPAIR PARTS IAW SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804;[15] VERIFIED STEPS 13 AND 14;[16] VERIFIED STEP 13;14;15;[17] OK GIVEN TO INSTALL NEW Z ANGLE REPAIR PARTS;[18] INSTALLED Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[19] VERIFIED STEP 18;

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