# SDR HYIA20190731001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2019
- Submitted: July 31, 2019
- Operation: Air carrier
- Aircraft: [N120PC](https://openairdocs.org/aircraft/N120PC), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0079
- Aircraft time: 33,328 hours, 34,215 cycles
- System (JASC): [5740 · Wing, Attach Fittings](https://openairdocs.org/jasc/5740)
- Part: Fitting
- Part number: 082255045
- Condition: Corroded
- Location: Lt Wing
- Part time: 33,328 hours, 34,215 cycles
- 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/HYIA20190731001

## Discrepancy

DURING MAINTENANCE, TWO AREAS OF CORROSION WERE DISCOVERED ON THE HORIZONTAL FLANGE OF THE UPPER LEFT HAND AFT WING FITTING (P/N 0822550-45.) THESE AREAS OF CORROSION MEASURED .750 BY .250 WITH A DEPTH OF .042, AND .400 BY .250 WITH A DEPTH OF .031. THIS FITTING WILL BE REMOVED AND REPLACED WITH A FACTORY NEW PART.

---
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.