# SDR AALA202610219941

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 24, 2026
- Submitted: October 22, 2026
- Operation: Air carrier
- Aircraft: [N959NN](https://openairdocs.org/aircraft/N959NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33329
- Aircraft time: 35,773 hours, 14,920 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202610219941

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION ON FLOOR BEAM BY LH IB AFT LAV MOUNT AT STA 947 LBL 24. REMOVED AND REPLACED UPPER CHORD OF THE 947 FLOOR BEAM FROM LBL 56.6 TO RBL 56.6 IAW SRM 53-70-51-2R REPAIR 5 ALT 1.

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