Service difficulty report · Strap · Boeing 7377H4

Difficulty date
August 4, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Strap
Condition
Corroded
Location
Bs 1018 Lbl 3
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 TENSION STRAP AT AFT WET AREA BS1018 LBL3 WL208. ; / [01] REMOVED AND EVALUATED CORROSION REMOVAL AT DISCREPANCY AREA. L= 2.8' W=1.2' DEPTH= 0.015'. NO ALLOWABLE DAMAGE FOUND ON SRM. PART TO BE REPAIR BY REPLACEMENT PER SRM 51-10-02 DEPTH GAGE ID ATS2473 S/N UNKNOWN DUE 07/2022; [02] VERIFIED; DAMAGE NOT ALLOWED AT THAT AREA; PART WILL BE REPLACED.; [03] REMOVED STRAP P/N 147A5620-3 IAW SRM 51-40-02-0G-0; [04] LOCATED AND DRILLED NEW STRAP P/N 147A5620-3 BETWEEN BS1006-1026 ;LBL 3;WL 208 WET AREA. IAW SRM 51-40-05 DWG NO -147A5600 REV.H; [05] LOCATED AND DRILLED NEW STRAP P/N 147A5620-3 BETWEEN BS1006-1026 ;LBL 3;WL 208 WET AREA. IAW SRM 51-40-05 DWG NO -147A5600 REV.H. OK TO INSTALL PART; [06] VERIFIED LOCATED AND DRILLED NEW STRAP PER SRM 51-40-05 AND DWG #147A5600. OK TO INSTALL; [07] INSTALLED NEW STRAP P/N 147A5620-3 BETWEEN BS 1006-1026; LBL 3;WL 208 WET AREA IAW SRM 51-40-02 ;DWG NO147A5600 REV.H; [08] VERIFIED INSTALLED NEW STRAP P/N 147A5620-3 BETWEEN BS 1006-1026; LBL 3;WL 208 WET AREA IAW SRM 51-40-02 ;DWG NO147A5600 REV.H; [09] ALL ITEMS ARE COMPLETE; [10] RII INSPECTED GOOD INSTALLATION OF TENSION STRAP PER SRM 51-40-02 AND DWG 147A5600.; [11] CARD COMPLETE; [12] UPDATED MEASUREMENT; [13] UPDATED PARTS REQUIREMENT; [14] VERIFIED ALL STEPS COMPLETE

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