# SDR ASAA2026091369249

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2026
- Submitted: October 15, 2026
- Operation: Air carrier
- Aircraft: [N564AS](https://openairdocs.org/aircraft/N564AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35103
- Aircraft time: 71,758 hours, 21,866 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A550611
- 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/ASAA2026091369249

## Discrepancy

AFT WET AREA BS 986 FLOORBEAM CORRODED BETWEEN LBL 43 - RBL 43. GROUNDED - YES. 5EA SPOTS OF CORROSION FOUND ON FLOORBEAM TOP SURFACE BETWEEN RBL 43 & LBL 43. REMOVED CORROSION & FOUND IN LIMITS AT RBL 43, RBL 29, RBL 14.5, LBL 12 IAW SRM 53-70-51-1A-1, STEP 4H. CORROSION AT LBL 43 FOUND OUT OF LIMITS, REPAIRED FLOORBEAM LBL 43 IAW SRM 53-70-51-2R-6, STEP 4.

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