Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
July 29, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Attach Angle
Condition
Cracked
Location
Bs 693 Lbl1
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

CRACKED ATTACH ANGLE AT PASSENGER CABIN BS693 LBL1 WL207. ; / [01] FOUND ATTACH ANGLE TO BE OUT OF LIMITS DUE TO NO ALLOWABLE LIMITS IN SRM ; REPLACE PART PER SRM 51-10-02-0 STEP 9; REMOVED ATTACH ANGLE AT BS 693 LBL 1 WL 207 PER SRM 51-40-02-0G-0; [02] VERIFIED NO LIMITS FOR DAMAGE OF PART IN SRM AND PART CAN BE REPLACED PER SRM 51-10-02-0 STEP 9.; [03] ADDED SRM REFERENCE IN CORRECTIVE ACTION REFERENCE FIELD.; [04] CERTIFIED CORRECTION; [05] FABRICATED ATTACH ANGLE AT BS 693 LBL1 WL 207; BAC 1490-2707 2024-T3 LOT # 1441700-1; APPLIED CHEMICAL CONVERSION COATING PER DRAWING #273A9112 SHT 27 AND SHT 8 OF 15; [06] VERIFIED BRACKET P/N 273A9112-55 WAS FABRICATED PER DRAWING 273A9112 SHT 27 AND PL REV H. VERIFIED PART ALSO HAD CHEMICAL CONVERSION COATING APPLIED.; [07] APPLIED 2 LAYERS OF PRIMER TO ATTACH ANGLE PER DRAWING # 273A9112 REV H SHT 8 OF 15 OK TO INSTALL; [08] VERIFIED BRACKET P/N 273A9112-55 WAS PRIMED PER DRAWING 273A9112 SHT 27 AND PL REV H. OKAY TO INSTALL PART.; [09] INSTALLED ATTACH B RACKET AT BS 693 LBL 1 WL 207 PER SRM 51-40-02-0G-0 AND DRAWING # 273A9110 SHT 6 REV A; [10] VERIFIED BRACKET INSTALLATION PER SRM 51-40-02 AND DWG #273A9110; [11] COMPLETE

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