# SDR 99ZZZX3102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N475ER](https://openairdocs.org/aircraft/N475ER), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280670
- Engine: Lyc IO360L2A
- System (JASC): [8500 · Engine (Reciprocating)](https://openairdocs.org/jasc/8500)
- Part: Powerplant
- Condition: Malfunctioned
- Location: Engine Bay
- Part time: 1,055 hours
- Stage of operation: DE
- Nature of condition: R, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3102

## Discrepancy

DURING AN INSTRUCTIONAL FLIGHT, THE PILOT REPORTED A TWO TO THREE SECOND ROUGH ENGINE.  THIS WAS ON FINAL AND OCCURRED BETWEEN 400 FEET AND 100 FEET.  SUBMITTER STATED THE AIRCRAFT HAS A HISTORY OF MOMENTARY POWER LOSSES AND IS CURRENTLY GROUNDED PENDING FURTHER INVESTIGATION.

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