# SDR 99ZZZM654

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N973NA](https://openairdocs.org/aircraft/N973NA), registered now
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft serial: 065
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: S53672410200
- Condition: Corroded
- Location: Frame 41
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZM654

## Discrepancy

FOUND CORROSION ON FLOORBEAM FRAME 41 CENTER AREA BY FITTING.  CAUSE OF CORROSION DETERMINED TO BE ENVIRONMENTAL CORROSION BLENDED AND FOUND BEYOND LIMITS IAW SRM 53-61-00 FIG 301.  (M)

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