Service difficulty report · Support Angle · Boeing 7378H4

Difficulty date
June 8, 2022
Submitted
June 17, 2022
Operation
Air carrier
Aircraft
N8693A
Make and model
Boeing 7378H4
Aircraft serial
36921
Aircraft time
19,765 hours, 9,211 cycles
Part
Support Angle
Condition
Corroded
Location
Fwd Cargo
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 BAY AFT LOWER BULKHEAD SUPPORT ANGLE HAS AREAS OF CORROSION BS500I RBL23 TO LBL23 WL156 / [01] EVALUATED CORROSION ON BULKHEAD SUPPORT ANGLE AT ALL LOCATIONS; FOUND THE DEEPEST LOCATION TO BE AT BS 500I RBL 23 WL 156 FOUND 0.021 REMOVED FROM ORIG 0.071 IN NUMEROUS 1'X1' AREAS; FOUND TO BE OUT OF LIMITS PER SRM 53-30-08-1A-1 USING DIAL DEPTH GAUGE ATS 2678 DUE 04/2023;[02] VERIFIED CORRECTIVE ACTION ENTRY 1. OUT OF LIMITS;[03] REMOVED FWD CARGO BAY AFT LOWER BULKHEAD SUPPORT ANGLE BS 500I RBL23 TO LBL23 WL156 PER SRM 51-40-02-0G-0.;[04] LOCATED; DRILLED AND DEBURRED NEW BULKHEAD SUPPORT ANGLE BS 500I RBL23 TO LBL23 WL156 PER SRM 51-40-05-0G-0; AND DWG 143A7902.;[05] VERIFIED CORRECTIVE ACTION 4;[06] OK TO INSTALL;[07] OK TO INSTALL.;[08] UPDATED MEASUREMENT TABLE;[09] INSTALLED NEW FWD CARGO BAY AFT LOWER BULKHEAD SUPPORT ANGLE BS 500I RBL23 TO LBL23 WL156 IAW SRM 51-40-02-0G-0; AND DWG 143A7902.;[10] VERIFIED CORRECTIVE ACTION STEP 9.;[11] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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