Service difficulty report · Support · Boeing 7377H4

Difficulty date
July 29, 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
Support
Condition
Corroded
Location
Bs 727e Rbl 21
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 FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727E+18 RBL21 WL156. ; / [01] REMOVED CORROSION ON TO SIDEWALL SUPPORT AT AFT CARGO BS 727E+18 RBL21 WL 156 .DIMENSIONS L=1.2' W=1.' DEPTH .009 IAW SRM 51-10-02 PARA#15;EVALUATED TO SIDEWALL SUPPORT ORIGINAL THICKNESS .040' REMAINING THICKNESS .031'DAMAGE EXCEED 10% OF ORIGINAL THICKNESS FOUND TO BE OUT LIMITS IAW SRM 53-00-53-1A-2;ALLOWABLE DAMAGE 2;TOOL USED MICROMETER S/N 87172291 DATE DUE 5/2022.; [02] VERIFIED REMOVED CORROSION ON TO SIDEWALL SUPPORT AT AFT CARGO BS 727E+18 RBL21 WL 156 .DIMENSIONS L=1.2' W=1.' DEPTH .009 IAW SRM 51-10-02 PARA#15;EVALUATED TO SIDEWALL SUPPORT ORIGINAL THICKNESS .040' REMAINING THICKNESS .031'DAMAGE EXCEED 10% OF ORIGINAL THICKNESS FOUND TO BE OUT LIMITS IAW SRM 53-00-53-1A-2;ALLOWABLE DAMAGE 2.; [03] THIS DISCREPANCY WILL ACCOMPLISHED ON CARD TTG8Q005ZD26.; [04] THIS DISCREPANCY WILL BE ACCOMPLISHED ON CUSTOMER CARD TTG8Q005ZD26.; [05] VERIFIED FLOOR TO SIDEWALL SUPPORT REPLACED ON FAULT # TTG8Q005ZD26

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