# SDR ASAA2026072268259

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2026
- Submitted: August 27, 2026
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35182
- Aircraft time: 70,076 hours, 21,176 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A5506
- 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/ASAA2026072268259

## Discrepancy

AFT WET STA 986.5 FLOOR BEAM CORRODED AT LBL-38 ON UPPER FLANGE. GROUNDED - YES. REMOVED CORROSION FOUND TO BE OUT OF LIMTIS IAW B737-800 SRM 53-70-51-1A-1, REPAIRED FLOOR BEAM IAW B737-800 SRM 53-70-51-2R-4 W= 1.5" O= .160 R= .105 L= 3" D= .055.

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