# SDR ASOA04371

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2004
- Submitted: June 18, 2004
- Operation: Air carrier
- Aircraft: [N640AS](https://openairdocs.org/aircraft/N640AS), registered now
- Make and model: Aerosp ATR72
- Aircraft serial: 405
- Engine: Pwa PW127
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Fuselage
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA04371

## Discrepancy

DURING C-CHECK INSPECTION, THE FLOORBEAMS AT FRAMES 38 AND 39 WERE FOUND TO BE CORRODED BEYOND LIMITS.  MAINTENANCE REMOVED AND REPLACED THE CORRODED FLOORBEAMS IAW SRM51-25-01.  AIRCRAFT WAS RELEASED FROM C-CHECK ON MARCH 21, 2004.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.