# SDR HYIA20190621001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 20, 2019
- Submitted: June 21, 2019
- Operation: Air carrier
- Aircraft: [N818AN](https://openairdocs.org/aircraft/N818AN), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: C4020501
- Aircraft time: 37,079 hours, 363,323 cycles
- System (JASC): [5740 · Wing, Attach Fittings](https://openairdocs.org/jasc/5740)
- Part: Attach Fitting
- Part number: 08225543
- Condition: Corroded
- Location: Zone 500
- Part time: 37,079 hours, 36,323 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/HYIA20190621001

## Discrepancy

WHILE PERFORMING SPECIAL INSPECTION 402-22 PER INSPECTION PROGRAM MANUAL, AND MAINTENANCE MANUAL 5-20-01, CORROSION WAS VISUALLY IDENTIFIED ON THE LEFT WING'S, FORWARD SPAR'S, LOWER, AFT, WING FITTING.  THIS CORROSION IS ON THE LOWER HORIZONTAL FLANGE OF THE FITTING MEASURING APPROXIMATELY 3 INCHES LONG, AND .250 INCHES WIDE, WITH A MAX DEPTH OF .022 INCHES DEEP. THIS FITTING WILL BE REMOVED AND REPLACED USING NEW PARTS.

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