# SDR CA091125003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2009
- Submitted: January 19, 2010
- Operation: General aviation
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft time: 444 hours
- Engine: Lyc IO360L2A
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Alternator
- Part number: 991059111RX
- Condition: Failed
- Location: Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA091125003

## Discrepancy

(CAN) THE AIRCRAFT PFD INDICATED CHARGING SYSTEM FAILURE IN FLIGHT.  AIRCRAFT RETURNED TO BASE TROUBLE SHOOTING C/O FOUND ALTERNATOR FAILED, UNIT ONLY HAD 300 HRS SINCE OVERHAUL.  MANUFACTURER RECOMENDS 500 HR INTERVAL. (TC NR 20091125003)

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