Service difficulty report · Support · Boeing 73773V

Difficulty date
August 1, 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
143A750180
Condition
Corroded
Location
Fwd 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 FCB L/H FLOOR-TO-SIDEWALL SUPPORT; BS 460; LBL 24; WL 156 (MARKED) ; / [01] VEREFIED APPLICABILITY OF SRM 53-30-53-0I-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE; [02] REMOVED CORRISION FROM FCB FWD L/H FLOOR-TO-SIDEWALL SUPPORT; BS 460; LBL 24; WL 156. P/N 143A7501-80; IN AREA 0.7' X 0.5' X 0.019' DEEP; ORIGINAL THICKNESS 0.04' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 PER 4.A(2) FIG. 103 DETAIL A <BR>TOOL USED <BR>-DEPTH GAGE <BR>ID:ATS2472. S/N: UNKNOWN. DUE DATE: 06/2022; [03] VERIFIED REMOVED CORRISION FROM FCB FWD L/H FLOOR-TO-SIDEWALL SUPPORT; BS 460; LBL 24; WL 156. P/N 143A7501-80; IN AREA 0.7' X 0.5' X 0.019' DEEP; ORIGINAL THICKNESS 0.04' FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 PER 4.A(2) FIG. 103 DETAIL A.; [04] PART WAS FOUND TO BE OUT OF LIMITS AND WILL BE REPLACED ON CUSTOMER CARD: TTG8Q0060HB5; [05] PART WAS FOUND TO BE OUT OF LIMITS. REMOVAL OF FLOOR TO SIDEWALL SUPPORT WAS ACCOMPLISHED ON CUSTOMER CARD: TTG8QOO4G1EL STEP 11 AND WILL BE FABRICATED AND INSTALLED ON CUSTOMER CARD: TTG8Q0060HB5; [06] UPDATED STATEMENT.; [07] PART WAS FOUND TO BE OUT OF LIMITS. REMOVAL OF FLOOR TO SIDEWALL SUPPORT WAS ACCOMPLISHED ON CUSTOMER CARD: TTG8Q004G1EL STEP 11 AND WILL BE FABRICATED AND INSTALLED ON CUSTOMER CARD: TTG8Q0060HB5; [08] VERIFIED FLOOR TO SIDEWALL SUPPORT REMOVED ON TASK CARD TTG8Q004G1EL. ALSO; WILL BE FABRICATE AND INSTALL ON CUSTOMER CARD TTG8Q0060HB5

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