# SDR 99ZZZX92

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 25, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N24FC](https://openairdocs.org/aircraft/N24FC), registered now
- Make and model: Cessna R172E
- Registry model: [Cessna R172E](https://openairdocs.org/model/cessna-r172e) (OpenAirDocs)
- Aircraft serial: R1720199
- Engine: Cont IO360D
- System (JASC): [8550 · Reciprocating Engine Oil System](https://openairdocs.org/jasc/8550)
- Part: Gear
- Part number: 653236
- Condition: Failed
- Location: Engine
- Part time: 717 hours
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX92

## Discrepancy

WHILE IN-FLIGHT, OIL PRESSURE AND TACHOMETER DROPPED TO ZERO.  WAS ABLE TO LAND ON PRIVATE GRASS STRIP WITHOUT INCIDENT.  DETERMINED THE OIL PUMP DRIVE GEAR FAILED CAUSING FAILURE OF OIL PUMP, TACH DRIVE, AND ALTERNATOR GEAR.  ON AN EARLIER DATE, FORCED TO MAKE AN EMERGENCY LANDING WITHOUT INCIDENT IN SAME TYPE AIRCRAFT.  IT WAS ALSO DETERMINED THE OIL PUMP DRIVE GEAR HAD FAILED.

---
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.