SDR DALA12009535651

Service difficulty report · Floorbeam · Boeing 757251

Difficulty date: October 1, 2012
Submitted: October 8, 2012
Operation: Air carrier
Aircraft: N551NW
Make and model: Boeing 757251
Aircraft serial: 26498
Aircraft time: 34,256 hours, 13,887 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 FLOORBEAM UPPER SURFACE CORRODED STA 365.25 BL 0 -RBL 63. REMOVED CORROSION ON FLOORBEAM & FOUND TO BE OUT OF LIMITS IAW SRM 53-00-51 ALLOWABLE DAMAGE 1, PG 104, FIG 101 DETAIL III. CUTOUT UPPER FLANGE OF FLOORBEAM, FROM LBL 9.5-RBL 70 WITH CUTOUT DIMENSIONS OF L=79.5 X W=2.0. REPAIRED DAMAGED AREA IAW SRM 53-00-51, REPAIR 3, PG 203, FIG 201, TABLE I AND ERA 488913-14 MA REV B.