Service difficulty report · Support · Boeing 7378

Difficulty date
October 26, 2023
Submitted
November 14, 2023
Operation
Air carrier
Aircraft
N8715Q
Make and model
Boeing 7378
Aircraft serial
42570
Aircraft time
13,037 hours, 5,794 cycles
Part
Support
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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 AFT LOWER BULKHEAD SUPPORT HAS MULTIPLE AREAS AROUND FASTENER HOLES BS500I LBL21 TO RBL21<[01] VERIFIED STEP 1 COMPLETE; STEPS 3;4 IN PARTIAL AND MEASUREMENT TABLE.;[02] VERIFIED STEP 3 COMPLETE.;[03] REMOVED; REPLACED AND INSTALLED NEW AFT LOWER BULKHEAD SUPPORT AT BS 500I LBL21 TO RBL21 PER SRM 51-40-02-0G-0; DWG 143A9481 AND DWG 143A7902.;[04] VERIFIED ALL STEPS COMPLETE; CARD COMPLETE.

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