# SDR ECPR2014052861586

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2014
- Submitted: June 11, 2014
- Operation: General aviation
- Aircraft: [N7707G](https://openairdocs.org/aircraft/N7707G), registered now
- Make and model: Piper PA-44-180
- Registry model: [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180) (OpenAirDocs)
- Aircraft serial: 4496096
- Aircraft time: 4,783 hours
- Engine: Lyc O360A1H6
- Engine time: 6,576 hours
- Propeller: Hartzl HCC2YR2
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Part number: 86152000
- Condition: Corroded
- Location: Zone 500
- Part time: 4,783 hours
- 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/ECPR2014052861586

## Discrepancy

TWO AREAS OF EXFOLIATION CORROSION WERE FOUND ON THE UPPER SURFACE OF  ANGLE, WHICH IS ATTACHED TO THE LOWER PORTION OF THE PN 86152-00 LT WING SPAR ASSY, AT APPROXIMATELY WING STATIONS 41.00 & 47.50. DUE TO THE AMOUNT OF MATERAIL REQUIRED TO BE REMOVED THESE AREAS OF CORROSION APPEARED TO HAVE STARTED INSIDE THE MATERIAL OF THE ANGLE WITH NO EXTERNAL INFLUENCE.

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