# SDR 2007FA0000201

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2007
- Submitted: March 6, 2007
- Operation: General aviation
- Aircraft: [N982BT](https://openairdocs.org/aircraft/N982BT), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280307
- Engine: Lyc IO360L2A
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Part number: V53793493
- Condition: Corroded
- Location: Engine
- Part time: 4,744 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/2007FA0000201

## Discrepancy

THIS CRANKSHAFT WAS LAST INSPECTED AND PID COATED AT THE FACTORY APRIL 23, 2002, YET 6 YEARS AND 2196 HOURS LATER, IT WAS PITTED, AND REQURIED FURTHER MACHINING.  THE PID COATING DOES NOT SEEM TO HOLD UP, OR BLOCK THE CORROSION.  (K)

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