# SDR FDEA2019100792445

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2019
- Submitted: October 7, 2019
- Operation: Air carrier
- Aircraft: [N939FD](https://openairdocs.org/aircraft/N939FD), registered now
- Make and model: Boeing 757-23A
- Registry model: [Boeing 757-23A](https://openairdocs.org/model/boeing-757-23a) (OpenAirDocs)
- Aircraft serial: 24528
- Aircraft time: 63,696 hours, 23,611 cycles
- System (JASC): [5712 · Wing, Rib/Bulkhead](https://openairdocs.org/jasc/5712)
- Part: Rib
- Condition: Corroded
- Location: Rt Wing Le
- 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/FDEA2019100792445

## Discrepancy

RIGHT AILERON ATTACHMENT RIB AT WING STA 810 WAS CORRODED AT BONDING LEAD ATTACHMENT.   CORROSION REMOVED IAW SRM 51-10-02 AND EVALUATED IAW SRM 57-51-09-1A FIG 101 SHEET 5 ,NOTE K ,DETAIL IV AND VI AND FOUND TO BE OUTSIDE SRM LIMITS ,ORIGINAL THICKNESS =   0.118" REMAINING THICKNESS = .041".  RPAIRED IAW EA # F-5740-T0349698 P1.

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