Service difficulty report · Support · Boeing 7377BD

Difficulty date
September 11, 2021
Submitted
April 27, 2022
Operation
Air carrier
Aircraft
N7751A
Make and model
Boeing 7377BD
Aircraft serial
36717
Aircraft time
43,609 hours, 22,223 cycles
Part
Support
Part number
143A7501183
Condition
Corroded
Location
Fwd Cargo Bay
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 FWD CARGO BAY BS426 - BS433 LBL23 WL156. ; / REMOVED CORROSIONON FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BTW BS46 TO BS 433 LBL23 WL 156. MEASURES: L:1'; W:0.900'; D:0.020'; ORIGINAL THICKNESS:0.040';MATERIAL LOSS:0.020'; REMAINING THICKNESS:0.020'; IS OUT OF LIMITS. I.A;W; SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2; STEP 4(2). TOOL USED: DEPTH GAGE ID: ATS1225; DUE DATE 07/2021 FABRICATED LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY FROM BS-400 TO BS 500D LBL23 WL 156 ITEM#BAC1496-444 LOT#5098100-1 IAW SRM 51-40-05-0G-0 AND FABRICATED LOCATED AND DRILLED SPLICE REPAIR AT BS 480+10' LBL-23; WL-156; MAT. USED BAC1496-444 LOT#5098100-1 IAW SRM 53-00-53-2R-6 PAR.4. INSTALLED NEW FLOOR TO SIDEWALL SUPPORT AT FWD CARGO BAY BS400 - BS500D LBL23 WL156 IAW SRM 51-40-02-0G-0 AND DWG#143A7500.

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