Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 2, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Support
Condition
Corroded
Location
Aft 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

CORROSION ON AFT CARGO BAY AFT LOWER BULKHEAD SUPPORT AT BS 947 LBL 8-RBL 21. / [01] UPON FURTHER INVESTIGATION; NO ALLOWABLE DAMAGE LIMITS NOTED ON SRM- PART TO BE REPAIR BY REPLACEMENT I.A.W SRM 51-10-02-0G-0 PARA 9.;[02] REMOVED ACB LOWER BULKHEAD SUPPORT ANGLE AT BS 947.5 LBL 8- RBL 21 PER SRM 51-40-02-0G-0.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2.;[04] LOCATED AND DRILLED NEW ACB LWR BULKHEAD SUPPORT ANGLE PER SRM 51-40-05 AND DWG 149A8117 REV:- SHT 6.;[05] VERIFIED CORECTIVE ACTION 4.;[06] OK TO INSTALL NEW ACB AFT LOWER BULKHEAD SUPPORT.;[07] OK TO INSTALL NEW ACB AFT LOWER BULKHEAD SUPPORT GIVEN.;[08] INSTALLED LOWER BULKHEAD SUPPORT IAW SRM 51-40-02 AND DWG 149A8117 REV: -;[09] VERIFIED INSTALLATION OF THE AFT CARGO BAY LWR BULKHEAD SUPPORT PER SRM 51-40-02 AND DWG 149A8117 REV: -;[10] WORKSCOPE COMPLETE

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