# SDR AMTA200800210

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2008
- Submitted: March 18, 2008
- Operation: Air carrier
- Aircraft: [N520AT](https://openairdocs.org/aircraft/N520AT), registered now
- Make and model: Boeing 757-23N
- Registry model: [Boeing 757-23N](https://openairdocs.org/model/boeing-757-23n) (OpenAirDocs)
- Aircraft serial: 27976
- Engine: Rroyce RB211535E4
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Corroded
- Location: Bs 1640-1681
- 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/AMTA200800210

## Discrepancy

CORROSION AROUND ALL FASTENER HOLES ON OB FLOORBOARD SUPPORT JUST IB OF L-4 DOOR LWR SILL BS 1640-BS 1681.8, LBL 58.22.  FOUND CORROSION ON LOWER AFT SILL SECTION OUT OF LIM SRM 53-60-15 DET V BLEND CORROSION LEW SILL FWD SECT IN LIM IAW SRM 53-60-15 TREATED 51-40-01.  REPAIRS AFT SECTION AT STA 1661 TO 1681, LBL 65 51-P40-02.  FAB AND INST REP SRM 51-40-02. (K)

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