SDR DALA2025121009022

Service difficulty report · Floorbeam · Boeing 757251

Difficulty date: December 8, 2025
Submitted: December 10, 2025
Operation: Air carrier
Aircraft: N555NW
Make and model: Boeing 757251
Aircraft serial: 33391
Aircraft time: 63,261 hours, 28,684 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Zone 200
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

UPPER CABIN, FS 1681 FLOORBEAM UPPER SURFACE, CORROSION, LEFT OF CENTER GOING OTBD APPROX 20 INCHES INCLUDING SCREW HOLES. REMOVED CORROSION AT UPPER CABIN STA 1681 FLOORBEAM, FOUND TO BE OUT OF LIMITS. REMOVED DAMAGE AND REPAIRED FLOORBEAM IAW SRM 53-00-51 AND SRM 53-60-51-2R-2. (1343705)