Service difficulty report · Support · Boeing 73773V

Difficulty date
August 2, 2021
Submitted
September 3, 2021
Operation
Air carrier
Aircraft
N7839A
Make and model
Boeing 73773V
Aircraft serial
30243
Aircraft time
57,802 hours, 35,522 cycles
Part
Support
Part number
143A75021
Condition
Corroded
Location
Aft Cargo
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 FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727D+13 - BS727D+19 RBL21 WL156. ; / [01] VERIFIED APPLICABILITY OF SRM 53-60-53-0I-2 FOR IDENTIFICATION AND SRM 53-60-53-1A-2 FOR ALLOWABLE DAMAGE; [02] REMOVED CORROSION FROM FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS 727D +13''- BS727D+19'' RBL21 WL157; P/N 143A7502-1 IN AREA 0.3''X0.2''X0.018'' DEEP; ORIGINAL THICKNESS 0.040''; FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 PAR. 4.A.(2) FIG. 103.<BR>TOOL USED: DIAL DEEP GAGE ID:ATS2452; DUE: 06/2022; [03] CORRECTED MEASUREMENT; [04] CORRECTED: REMOVED CORROSION FROM FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS 727D +13''- BS727D+19'' RBL21 WL157; P/N 143A7502-2 IN AREA 0.3''X0.2''X0.018'' DEEP; ORIGINAL THICKNESS 0.040''; FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 PAR. 4.A.(2) FIG. 103.<BR>TOOL USED: DIAL DEEP GAGE ID:ATS2452; DUE: 06/2022; [05] VERIFIED REMOVED CORROSION FROM FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS 727D +13''- BS727D+19'' RBL21 WL157; P/N 143A7502-2 IN AREA 0.3''X0.2''X0.018'' DEEP; ORIGINAL THICKNESS 0.040''; FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-2 PAR. 4.A.(2) FIG. 103.; [06] THIS DISCREPANCY WILL ACCOMPLISHED ON CARD TTG8Q0060TCS; [07] VERIFIED; CONFIRMED REPLACEMENT ON TTG8Q0060TCS; JOB COMPLETE.; [08] VERIFIED; CONFIRMED REPLACEMENT ON TTG8Q0060TCS; JOB COMPLETE.

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