SDR AALA202609036280

Service difficulty report · Floorbeam · Boeing 737823

Difficulty date: July 17, 2026
Submitted: September 3, 2026
Operation: Air carrier
Aircraft: N903AN
Make and model: Boeing 737823
Aircraft serial: 29505
Aircraft time: 70,975 hours, 29,741 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: DBF21501
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

AIRCRAFT IN BASE MAINTENANCE: CABIN FLOOR STRUCTURE, FOUND EXFOLIATION CORROSION ON THE UPPER SURFACE OF THE FLOORBEAM AT BS 986.5, RBL 3 - 44. R & R FLOORBEAM TEE FITTING IAW SRM 53-70-51-2R, PROCEDURE 4, REPAIR, SRM 51-40-02, EA 377687, & DWG DBF2150.