Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 20, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 cycles
Part
Support
Condition
Corroded
Location
Fuselage
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 FCB FLOOR TO SIDEWALL SUPPORT LBL24.75; BS500+18.5'; WL157 ; / [01] VERIFIED APPLICABILITY ON SRM 53-30-53-OI-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE; [02] REMOVED CORROSION FROM FCB FLOOR TO SIDEWALL SUPPORT BS 500+18.5'' LBL24.75 WL157 P/N 143A7501-183 IN AREA OF 2'X1'X0.020'DEEP; ORIGINAL MATERIAL THICKNESS 0.040'' FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 PAR. 4.A. (2) FIG. 103 DETAIL A. <BR>TOOL USED: DEPTH GAGE; ID:ATS 2473; S/N:UNKNOWN.; [03] VERIFIED REMOVAL OF CORROSION FROM FCB FLOOR TO SIDEWALL SUPPORT BS 500+18.5'' LBL24.75 WL157 P/N 143A7501-183 IN AREA OF 2'X1'X0.020'DEEP; ORIGINAL MATERIAL THICKNESS 0.040'' FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 PAR. 4.A. (2) FIG. 103 DETAIL A. <BR>TOOL USED: DEPTH GAGE; ID:ATS 2473; S/N:UNKNOWN.; [04] THIS JOB CARD WILL BE ACCOMPLISHED WITH CUSTOMER CARD # TTG8Q0054DRO; [05] CORRECTED CARD# TO TTG8Q0054DR0; [06] VERIFIED PART WILL BE REPLACED ON TTG8Q0054DR0

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