Service difficulty report · Strap · Boeing 7377H4

Difficulty date
July 1, 2021
Submitted
July 26, 2021
Operation
Air carrier
Aircraft
N913WN
Make and model
Boeing 7377H4
Aircraft serial
29840
Aircraft time
43,304 hours, 26,170 cycles
Part
Strap
Condition
Corroded
Location
Bs 787
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

CORROSION ON ACB TENSION STRAP; BS 787+12; RBL 19; WL 157 (MARKED) ; / [01] EVALUATED ACB TENSION STRAP BS 787+12 RBL 19 WL 157 AND FOUND TO BE OUT OF LIMITS DUE TO EXCEEDS THE ALLOWABLE LIMITS IAW SRM 53-60-15-1A-1 PART 4G(3); PART REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0; MEASURES L=1.0'' X W=0.8'' X D=0.030'' TOOL USED DIGITAL CALIPER P/N ATS2318 S/N B19006095 DEPTH GAUGE P/N ATS2472 S/N UNKNOWN; [02] VERIFIED CORROSION FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1.<BR><BR>PART TO BE REPLACED.; [03] REMOVED ACB TENSION STRAP BS 787+12'' RBL 19 WL 157;<BR>IAW SRM 51-40-02-0G-0; [04] REMOVED ACB TENSION STRAP BS 770-860 RBL 19 WL 157;IAW SRM 51-40-02-0G-0; [05] RECIVED NEW STRAP ITEM 7530562 LOT 1457399-1 P/N 146A8128-14 LOCATED AND DRILLED NEW STRAP AT BS 787+12 RBL 19; WL 157; IAW B 737-700 SRM 51-40-05-OG-0 DWG 146A8120; [06] OK TO INSTALL STRAP; [07] VERIFIED NEW TENSION STRAP RECEIVED AND LOCATED AND DRILLED IAW SRM 51-40-05 AND DWG 146A8120; [08] INSTALLED NEW TENSION STRAP AT BS 767+8 - 847+15 RBL 19 WL 157 . IAW 773-700 SRM 51-40-02-0G-0; DWG 146A8120 AND DWG 146A0081 .; [09] VERIFIED INSTALLATION OF THE NEW TENSION STRAP AT BS 767+8 - 847+15 RBL 19 WL 157 . IAW 773-700 SRM 51-40-02-0G-0; DWG 146A8120 AND DWG 146A0081; [10] ALL ITEMS ARE COMPLETE; [11] UPDATED PARTS USAGE; [12] VERIFIED FAULT COMPLETE

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