SDR FDEA202007161542

Service difficulty report · Floorbeam · Boeing 757222

Difficulty date: July 16, 2020
Submitted: July 17, 2020
Operation: Air carrier
Aircraft: N797FD
Make and model: Boeing 757222
Aircraft serial: 28143
Aircraft time: 61,287 hours, 24,224 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 365
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

MAIN CABIN, FWD RIGHT WET AREA , PRIOR TEE CAP REPAIR HAS CORROSION AT SEAT TRACK AREAS, BS 365 BL 0 TO RBL 64. REMOVED CORROSION, ORIGINAL THICKNESS (.125") REMOVED (.005") REMAINING (.120") CROSSECTIONAL AREA IS LESS THAN 5% WITH A1=.250" AND A2= .0025 A2/A1= 1% IAW SRM 53-00-51-1A FG 101 DETAIL 3 M4, AND SRM 53-10-52-01.