Service difficulty report · Angle · Boeing 7378H4

Difficulty date
February 21, 2022
Submitted
March 16, 2022
Operation
Air carrier
Aircraft
N8679A
Make and model
Boeing 7378H4
Aircraft serial
36932
Aircraft time
20,424 hours, 9,421 cycles
Part
Angle
Condition
Corroded
Location
Aft 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

DOT A-24-20 AFT PIT. RH 'Z-ANGLE' CORRODED ON UPPER SURFACE BETWEEN STATIONS 727H-767. / [01] REMOVED CORROSION DAMAGE FROM UPPER SURFACE OF AFT CARGO RH ZEE ANGLE STA 727H TO 767 AND VERIFIED WITH 10X MAG GLASS IAW SRM 53-00-53-1A-2 STEP 2D.;[02] VERIFIED MATERIAL LOSS: ORIGINAL T= .040' REMAINING T= .034' LOSS= .006' LIMIT= .004'. RH ZEE STA 727H TO 767 IS OUT OF LIMITS IAW SRM 53-00-53-1A-2 FIG 103 DET D;[03] TOOLING INFO FOR STEP 2. AAR 36646 CL DUE 10JUN22;[04] VERIFIED STEP 1 ;2 AND 3.;[05] CUTOUT DAMAGE SECTION OF Z ANGLE AT BETWEEN STA 727G -727H AND REMOVED 727H TO 767 IAW SRM 53-00-53-2R-5 REPAIR 5;[06] VERIFIED MATERIAL ID FOR Z ANGLE REPAIR PARTS BAC1496-377-7075 T6 TAG # A108169 IAW SRM 53-00-53-2R-5 REPAIR 5;[07] VERIFIED STEPS 5 & 6 ARE COMPLETE;[08] VERIFIED ITEMS 5 THROUGH 7;[09] FABRICATED Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5;[10] VERIFIED ITEM 9;[11] VERIFIED ITEM 9<BR>OK TO TREAT AND PRIME;[12] APPLIED ALODINE AND PRIMER Z ANGLE REPAIR PARTS AND BARE METAL AREAS IAW SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804;[13] VERIFIED ITEM 12;[14] VERIFIED STEPS 12 AND 13;[15] OK GIVEN TO INSTALL Z ANGLE;[16] INSTALLED Z ANGLE REPAIR PARTS IAW SRM 53-00-53-2R-5 REPAIR 5 AND DWG 146A7500 REV:-;[17] VERIFIED ITEM 16;[18] VERIFIED STEPS 16 AND 17;[19] OK GIVEN TO APPLY CIC;[20] APPLIED CIC Z ANGLE REPAIR PARTS IAW AMM 51-21-91-620-802;[21] VERIFIED ITEM 20;[22] VERIFIED STEPS 20 AND 21; JOB COMPLETE; AUDIT C/W

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