SDR AALA202607296999

Service difficulty report · Floorbeam · Boeing 737823

Difficulty date: July 3, 2026
Submitted: July 30, 2026
Operation: Air carrier
Aircraft: N904AN
Make and model: Boeing 737823
Aircraft serial: 29506
Aircraft time: 71,361 hours, 29,891 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Zone 100
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: AFT CABIN WET AREA O/B AFT LAV MOUNT FLOORBEAM HAS GALVANIC CORROSION AT STA 947, RBL 54. MAINTENANCE REPAIRED FLOORBEAM (T-CAP INSTALLED) AT STA 947, RBL 54 PER SRM53-70-51-2R-5, BOEING DRAWING 815A0010, AND AARD 51-00-05-01.