# SDR ASAA2025083060790

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 30, 2025
- Submitted: September 11, 2025
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 40,738 hours, 12,607 cycles
- System (JASC): [5321 · Fuselage Floor Panel](https://openairdocs.org/jasc/5321)
- Part: Floor Panel
- Part number: 147A5810439
- Condition: Delaminated
- 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/ASAA2025083060790

## Discrepancy

MULTIPLE CORRODED FASTNERS AND AREAS OF DELAMINATION ON FLOORDBOARD 241ABF P/N: 147A5810-439. GROUNDED - YES. REPAIRED DELAMINATION AND REPLACED FASTENERS ON FLOORBOARD 241AF P/N: 147A5810-439 IAW B737-900 SRM 53-00-50-2R-1, 53-00-50-2R-0.

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