Service difficulty report · Strap · Boeing 73776N

Difficulty date
July 15, 2021
Submitted
August 10, 2021
Operation
Air carrier
Aircraft
N7723E
Make and model
Boeing 73776N
Aircraft serial
32670
Aircraft time
48,099 hours, 24,239 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 STRAP AT AFT CARGO BAY BS787+17 RBL19 WL159. ; / [01] REMOVED CORROSION ON STRAP AT AFT CARGO BAY PER REF SRM 53-60-15-1A-1 L=1 W=1; [02] VERIFIED REMOVAL OF CORROSION ON STRAP AT AFT CARGO BAY PER REF SRM 53-60-15-1A-1 L=1' W=1'; [03] UT INSPECTED BLEND IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2; LOWEST THICKNESS = 0.081'<BR>CAL ID ATS2031 E650; [04] VERIFIED LIMITS ON BLENDED AREA L=1 W=1 ORIGINAL MATERIAL THICKNESS IS .100 REMAINING THICKNESS .081 THEREFORE FOUND TO BE OUT OF LIMITS PER REF SRM 53-60-15-1A-1; [05] REMOVED STRAP PER REF SRM 51-40-02; [06] VERIFIED OUT OF LIMITS PER SRM 53-60-15-1A-1; STRAP REMOVAL; [07] LOCATED AND DRILLED NEW STRAP AT AFT CARGO BAY BS 767+10 TO BS 857+5 RBL 19 WL 159 ITEM 146A8128U14 PO# 828684 IAW SRM 51-40-05 ; DWG 146A8120; DWG 146A8340 AND DWG 146A0081; [14] INSTALLED NEW STRAP AT AFT CARGO BAY BS 767+10 TO BS 857+5 RBL 19 WL 159 ITEM 146A8128U14 PO# 828684 IAW SRM 51-40-02 AND DWG 146A8120; [15] PART USAGE INFO;

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