# SDR 2026FA0000651

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2026
- Submitted: August 19, 2026
- Operation: General aviation
- Aircraft: [N4849D](https://openairdocs.org/aircraft/N4849D), registered now
- Make and model: Cessna 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Aircraft serial: 17272372
- Aircraft time: 14,750 hours
- System (JASC): [2810 · Fuel Storage](https://openairdocs.org/jasc/2810)
- Part: Fuel Cap
- Condition: Failed
- Location: Zone 500
- Part time: 14,750 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000651

## Discrepancy

AIRCRAFT EXPERIENCED A LOSS OF ENGINE POWER WHILE IN FLIGHT NEAR AMALGA, UTAH. THE PILOT ELECTED TO MAKE A PRECAUTIONARY LANDING IN A FIELD. THE CAUSE OF THE ENGINE POWER ISSUE WAS DETERMINED TO BE A VENTED FUEL CAP THAT WAS NOT VENTING PROPERLY. THE IMPROPER VENTING ALLOWED A VACUUM TO DEVELOP IN THE FUEL TANK, WHICH RESTRICTED FUEL FLOW TO THE ENGINE. AS CORRECTIVE ACTION, BOTH FUEL CAPS WERE REPLACED

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