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 947 Lbl2-9
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 AFT CARGO BAY BS947 LBL2 TO LBL9 WL179. ; / [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 ACB AFT BULKHEAD TO FLOOR SUPPORT; BS 947 ; IAW SRM 51-40-02-0G-0.; [04] LOCATED AN DRILLED NEW AFT BULKHEAD TO FLOOR SUPPORT ANGLE AT AFT CARGO BAY BS 947; WL179 IAW DWG 149A8117 SH6 AND SRM 51-40-05; [05] VERIFIED STEP 4; [06] VERIFIED LOCATE AND DRILL OF THE AFT CARGO BAY SUPPORT ANGLE AT BS947 PER DWG 149A8117 SH6 AND SRM 51-40-05; [07] OK TO INSTALL; [08] OK TO INSTALL BULKHEAD TO FLOOR SUPPORT; BS 947; LBL 2 - LBL 9; [09] INSTALLED ACB AFT BULKHEAD TO FLOOR SUPPORT; BS 947 ; IAW SRM 51-40-02-0G-0 AND DWG 149A8117.; [10] VERIFIED INSTALLATION OF ACB AFT BULKHEAD-TO-FLOOR SUPPORT; BS 947; LBL 2; PER SRM 52-40-02 AND DWG 149A8117; [11] UPDATED MEASUREMENT TABLE; [12] CERTIFIED STEPS 1 AND 11; [13] VERIFIED ALL WORK COMPLETE THIS TASK

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