SDR DALA12009165651

Service difficulty report · Floorbeam · Boeing 757251

Difficulty date: October 1, 2012
Submitted: October 4, 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 345
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 FLOORBEAM CORRODED BS 345 BL-0, LBL-20. REMOVED CORROSION ON UPPER FLOORBEAM STA 345 BL-O LBL-20. MEASURED MAT LOSS AND FOUND OUT OF LIMITS IAW SRM 53-00-51 ALLOWABLE DAMAGE 1, PG 104, FIG 101, DETAIL III. CUTOUT UPPER FLANGE OF FLOORBEAM BS 345 FROM LBL 51.5 TO RBL 11 WITH THE CUT DIMENTIONS OF L=67.5 X W=2.0 REPAIR 3 PG 203 FIG 201 TABLE I SRM 53-00-51. THIS A PERMANENT REPAIR IAW SRM 53-00-51, REPAIR NR 3 FIG 201.