SDR FDEA202006251351

Service difficulty report · Floor Support · Boeing 757236

Difficulty date: June 25, 2020
Submitted: July 3, 2020
Operation: Air carrier
Aircraft: N959FD
Make and model: Boeing 757236
Aircraft serial: 25133
Aircraft time: 52,470 hours, 24,281 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 143N55223
Condition: Corroded
Location: Fuselage
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

MAIN CABIN FLOOR SUPPORT STA 680 - 700 LBL 63 CORRODED. REMOVED CORROSION AT FLOOR SUPPORT STA 680 TO STA 700 LBL 63 ORIGINAL MAT .056", MAT LOSS .017" , REMAINING .039", FOUND TO BE OUT OF LIMITS IAW SRM 53-00-51-1A DETAIL III. REMOVED, FABRICATED AND INSTALLED FLOOR SUPPORT IAW SRM 51-40-02-OG AND B DWG 143N5522 REV-.