Service difficulty report · Floor Support · Boeing 757231

Difficulty date
December 8, 2022
Submitted
December 12, 2022
Operation
Air carrier
Aircraft
N721TW
Make and model
Boeing 757231
Aircraft serial
29954
Aircraft time
83,196 hours, 21,517 cycles
Part
Floor Support
Condition
Corroded
Location
Bs 1500-1635
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

SHIP 6810 CORROSION ON FLOOR SUPPORT STRINGER (UPPER AND LWR SIDES) LBL 7.55 BTW STA. 1500 AND 1510 AND STA. 1635 AT BULK CARGO. CORRECTIVE ACTION: SUMMARY OF NRC 00170, FLOOR SUPPORT STRINGER WAS REPAIRED PER B757-200 SRM. THICKNESS MEASUREMENT INSPECTION WAS ACCOMPLISHED THEREFORE AREAS ARE OUT LIMITS PER B757-200 SRM. HFEC INSPECTION WAS ACCOMPLISHED ALONG THE CUT EDGES AND NO CRACKS WERE FOUND PER B757-200 SRM. (2530496)