# SDR 2007FA0000452

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2006
- Submitted: May 30, 2007
- Operation: General aviation
- Aircraft: [N9899Q](https://openairdocs.org/aircraft/N9899Q), registered now
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft serial: 17265843
- Engine: Lyc O320*
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Piston
- Part number: IU478003
- Condition: Failed
- Location: Air Pump
- Part time: 65 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007FA0000452

## Discrepancy

INSTALLED A PISTON AIR PUMP (PN IU478-003, SER NR T568A) ON AUG 25, 2005.  THE PUMP DRIVE COUPLING FAILED BY 12/06 WITH LESS THAN 66 HOURS ON IT.  COUPLING FAILED INTERNALLY IN PUMP, WITH PLASTIC/SILICON DEBRIS IN ENG/DRIVE INTERFACE. (K)

---
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.