SDR DALA1129505531

Service difficulty report · Floorbeam · Boeing 757251

Difficulty date: April 27, 2011
Submitted: April 28, 2011
Operation: Air carrier
Aircraft: N531US
Make and model: Boeing 757251
Aircraft serial: 23846
Aircraft time: 72,678 hours, 29,915 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 377.7 Lbl 60
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

FLOORBEAM AT STA 377.7, LBL 60 TO RBL 6 UPPER & LOWER SURFACE HAS CORROSION SEVERAL PLACES AS MARKED. REMOVED CORROSION, OUT OF LIMITS, REMOVED TOP CAP OF FLOORBEAM FROM STA 377, LBL 5- RBL 60 IAW SRM 53-00-51, FIG 201, SH 1 FABRICATED REPAIR PARTS IAW SRM 53-00-51, FIG 201, LOCATED & DRILLED IAW SRM 51-40-02 TOP INST REPAIR IAW SRM 53-00-51, REPAIR 201, FLOORBEAM AND STIFFENER INST IAW SRM 51-40-02.