# SDR DALA1129555531

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2011
- Submitted: April 28, 2011
- Operation: Air carrier
- Aircraft: N531US
- Make and model: Boeing 757251
- Aircraft serial: 23846
- Aircraft time: 72,678 hours, 29,915 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Corroded
- Location: Bs 345-365
- 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/DALA1129555531

## Discrepancy

RT DOOR ENTRANCE VERTICAL INTERCOSTAL AT STA 345-365 UPPER & LWR SURFACE HAS CORROSION SEVERAL PLACES AROUND HOLES, AS MARKED.  REMOVED CORROSION IAW SRM 51-10-01 FOUND TO BE OUT OF LIMITS IAW SRM 53-00-51.  REMOVED DOOR ENTRANCE (RT) VERTICAL INTERCOSTAL IAW SRM 51-40-02.  FABRICATED PART ON STAM TRAVELER T11/878289 MAT 7075-0 .050C. INSTALLED RT DOOR ENTRANCE VERTICAL INTERCOSTAL IAW SRM 51-40-02.

---
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, except the copies of manufacturers’ service documents, which belong to their rights holders.