Service difficulty report · Angle · Boeing 7378H4

Difficulty date
November 17, 2021
Submitted
December 14, 2021
Operation
Air carrier
Aircraft
N8674B
Make and model
Boeing 7378H4
Aircraft serial
36734
Aircraft time
20,443 hours, 9,348 cycles
Part
Angle
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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 COMP.AFT BULKHEAD BOTTOM ANGLE CORRODED STA.500I LBL25-RBL25 WL 158 #185-011 ; / [01] BEGAN REMOVING CORROSION ON FWD PIT; AFT BH LOWER SUPPORT ANGLE; ORIGINAL .071' LOSS OF .027' REMAINING .044'; MIN ALLOWED .056' FOUND OUT OF LIMITS IAW SRM 53-30-08-1A-1. CORROSION STILL EXISTS. TOOLING 36646 CAL DUE 10-06-22; [02] INSPECTION VERIFIED STEP 1; [03] REMOVED AFT BH LOWER SUPPORT ANGLE IAW B737 SRM 51-40-02-0G-0; [04] VERIFIED NEW FWD PIT AFT LOWER BULKHEAD ANGLE AS P/N 143A9485 -35 'A'TAG WN8761 IAW BOEING DWG 143A9481 REV:-; [05] VERIFIED STEP 4; [06] LOCATED AND DRILLED NEW FLOOR BULKHEAD ANGLE IAW SRM 51-40-05-0G-0 ALSO BOEING DWG 143A9481 REV:-; [07] OK TO INSTALL; [08] INSTALLED NEW BULKHEAD ANGLE FOR FWD PIT IAW SRM 51-40-02-0G-0 ALSO BOEING DWG 143A9481 REV:-; [09] INSPECTION CW STEP 8; [10] OK TO CIC; [11] COMPLETED INSTALL OF ANGLE AND APPLIED CIC IAW AMM 51-21-91-701; [12] INSPECTION CW STEP 11. AUDIT CW

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