Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
July 31, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Support Angle
Condition
Corroded
Location
Bs 500d
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 BULKHEAD TO FLOOR SUPPORT ANGLE AT FWD CARGO BAY BS500D LBL23 TO RBL18 WL156. ; / [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 CORRECTIVE ACTION ENTRY 1.; [03] REMOVED FCB AFT BLKHD BS500D LBL23 TO RBL23 WL156 IAW SRM 51-40-02.; [04] LOCATED AND DRILLED BULKHEAD SUPPORT PER SRM 51-40-05 AND DWG 143A7902; [05] VERIFIED BULKHEAD SUPPORT FASTENER HOLES WERE LOCATED AND DRILLED PER SRM 51-40-05 AND DWG 143A7902.; [06] ENAMEL TOAPCOAT AND CIC ACCOMPLISHED PER CUSTOMER CARD#TTG8Q004G8AZ. REQUEST OK TO INSTALL; [07] VERIFIED CORRECTIVE ACTION 6.<BR><BR>OK TO INSTALL SUPPORT.; [08] INSTALLED FCB AFT BLKHD BS500D LBL23 TO RBL23 WL156 IAW SRM 51-40-02. AND DWG: 143A7902.; [09] VERIFIED CORRECTIVE ACTION ITEM 8; [10] VERIFIED COMPETE

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