# SDR DALA1021325522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2010
- Submitted: September 8, 2010
- Operation: Air carrier
- Aircraft: [N523US](https://openairdocs.org/aircraft/N523US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 23617
- Aircraft time: 66,941 hours, 27,518 cycles
- Engine: Pwa PW2037
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sill
- Condition: Corroded
- Location: Bs 1380-1440
- 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/DALA1021325522

## Discrepancy

DURING M-CHECK FOUND CORROSION ON AFT CARGO LOWER DOOR SILL, UPPER CHORD FASTENER HOLES BETWEEN BS 1380 & BS 1440. REPAIRED IAW SRM 51-40-02, SRM 51-40-05.

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