# SDR COEA2011110726919

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2011
- Submitted: November 9, 2011
- Operation: Air carrier
- Aircraft: [N919FX](https://openairdocs.org/aircraft/N919FX), registered now
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft serial: 266
- Aircraft time: 26,690 hours, 34,280 cycles
- System (JASC): [5524 · Elevator Miscellaneous Structure](https://openairdocs.org/jasc/5524)
- Part: Stiffener
- Part number: S55171200XXX
- Condition: Corroded
- Location: Elevator
- 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/COEA2011110726919

## Discrepancy

HEAVY CK COE / MAJOR REPAIR / LEVEL 2 CORROSION: LT HORIZONTAL ELEVATOR COVE HAS 6 STIFFENERS WITH CORROSION BETWEEN RIB 2 AND 3.  (ALL 6 LENGTH 4", WIDTH 1").  4 STIFFENERS FABRICATED AND INSTALLED; PN S55171200202, PN S55171200204, PN S55171200206, PN S55171200208; 2 STIFFENERS REPLACED WITH OEM PARTS PN S55171200214 AND PN S55171200216.

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