Service difficulty report · Support · Boeing 7378H4

Difficulty date
February 18, 2022
Submitted
March 3, 2022
Operation
Air carrier
Aircraft
N8681M
Make and model
Boeing 7378H4
Aircraft serial
36904
Aircraft time
20,561 hours, 9,510 cycles
Part
Support
Part number
143A948534
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

CORROSION FWD CARGO BAY ON R/H AFT BULKHEAD SUPPORT BS500I RBL 25 WL156 / [01] EVALUATED CORROSION; BS 500I RBL25 WL 156 FOUND 0.027 REMOVED FROM ORIG 0.071 IN A 1'X1' AREA FOUND TO BE OUT OF LIMITS PER SRM 53-30-08-1A-1 USING DIAL DEPTH GAUGE ATS2473;[02] UPDATED MEASUREMENT TABLE;[03] VERIFIED CORRECTIVE ACTION STEPS 1 AND 2.;[04] REMOVED BULKHEAD SUPPORT R/H BS500I RBL25 TO RBL65 PER SRM 51-40-02-0G-0.;[05] CORRECTION OF LOCATION; SHOULD BE RBL 25- RBL 61;[06] LOCATED; DRILLED; AND DEBURRED NEW FCB R/H AFT BULKHEAD SUPPORT BS 500I; RBL 25 - RBL 61; WL 156 - WL 195 IAW SRM 51-40-05-0G-0; DWG# 143A7902. OK TO INSTALL SUPPORT.;[07] VERIFIED CORRECTIVE ACTION 6.;[08] INSTALLED NEW FCB R/H AFT BULKHEAD SUPPORT BS 500I; RBL 25 - RBL 61; WL 156 - WL 195 IAW SRM 51-40-02-0G-0; DWG# 143A7902.;[09] VERIFIED CORRECTIVE ACTION 8.;[10] WORKSCOPE COMPLETE

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