Service difficulty report · Support · Boeing 7377H4

Difficulty date
June 23, 2021
Submitted
August 4, 2021
Operation
Air carrier
Aircraft
N940WN
Make and model
Boeing 7377H4
Aircraft serial
36900
Aircraft time
39,596 hours, 24,067 cycles
Part
Support
Condition
Corroded
Location
Bs 500d
Stage of operation
IN
How discovered
V
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

BS500D LBL24.5-RBL24.5 WL157 AFT BULKHEAD PANEL SUPPORT IS CORRODED. / [01] EVALUATED CORROSION FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [02] VERIFIED CORROSION TO BE OUT OF LIMITS DUE TO NO ALLOWABLE DAMAGE IN THE SRM. REPLACE PER SRM 51-10-02-0G-0; [03] REMOVED FCB LOWER AFT CENTER BULKHEAD SUPPORT BS500D; LBL24.5 - RBL24.5; WL157 PER SRM 51-40-02-0G-0; [04] LOCATED AND DRILLED NEW FCB LOWER AFT CENTER BULKHEAD SUPPORT BS500D; LBL24.5 - RBL24.5 PER DWG 143A9481; 143A7902; AND SRM 51-40-05-0G-0; [05] VERIFIED CORRECTIVE ACTION ITEMS 3 AND 4; [06] OK TO INSTALL; [07] INSPECTED; OK TO INSTALL; [08] INSTALLED NEW FCB LOWER AFT CENTER BULKHEAD SUPPORT BS500D; LBL24.5 - RBL24.5 PER DWG 143A9481; 143A7902; AND SRM 51-40-02-0G-0; [09] VERIFIED NEW FCB LOWER AFT CENTER BULKHEAD SUPPORT BS500D; LBL24.5 - RBL24.5 INSTALLED PER DWG 143A9481; 143A7902; AND SRM 51-40-02-0G-0; [10] UPDATED PARTS TABLE; [11] COMPLETE

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