Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
June 9, 2021
Submitted
July 19, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 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 LBL17 TO RBL 23 WL156. ; / [01] EVALUATED CORROSION ON BULKHEAD SUPPORT; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [02] CORROSION FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS FOUND WITHIN THE SRM. REPLACEMENT PER SRM 51-10-02-0G-0; [03] REMOVED FCB AFT BULKHEAD TO FLOOR SUPPORT BS500D LBL17 TO RBL23 IAW SRM 51-40-02-0G-0; [04] LOCATED AND DRILLED NEW BKD TO FLOOR SUPPORT ANGLE IAW SRM 51-40-05-0G-0 AND DWG 143A9481.; [05] VERIFIED LOCATED AND DRILLED NEW BKD TO FLOOR SUPPORT ANGLE IAW SRM 51-40-05-0G-0 AND DWG 143A9481; [06] OK TO INSTALL FCB AFT BULKHEAD TO FLOOR SUPPORT BS500D LBL17 TO RBL23; [07] VERIFIED OK TO INSTALL FCB AFT BULKHEAD TO FLOOR SUPPORT BS500D LBL17 TO RBL23.; [08] INSTALLED FCB FLOOR TO BULKHEAD SUPPORT BS500D; LBL17 TO RBL23; IAW SRM 51-40-02-0G-0; DWG 143A7902; [09] AND DRAWING 143A9471; [10] UPDATED PARTS INSTALL TABLE; [11] VERIFIED SUPPORT INSTALLATION; [12] VERIFIED JOB COMPLETE; [13] STILL AWAITING CERTIFIER ON EDIT BLOCK; [14] CERTIFIED STEP 8; [15] VERIFIED COMPLETE

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