# Incident 20170922020889I: Aero Vodochody L-39, Thermal, CA, September 22, 2017

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 22, 2017, 08:45 local time
- Place: Thermal, CA
- Airport: Jacqueline Cochran Airport
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 33.6267° N, 116.1597° W: Placed by OpenAirDocs at JACQUELINE COCHRAN RGNL (TRM), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.6267&lon=-116.1597&mi=10
- Aircraft: N391ZA, registered now (https://openairdocs.org/aircraft/N391ZA) (OpenAirDocs)
- Registry model: Aero Vodochody L-39 (registry code 05603SJ, https://openairdocs.org/model/aero-vodochody-l-39) (OpenAirDocs)
- Registry engine: Ivchenko AI-25TL (registry code 34703, https://openairdocs.org/engine/ivchenko-ai-25tl) (OpenAirDocs)
- Reported make and model: AERO VODOCHODY L-39
- Reported engine: IVCHENKO AI-25TL
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Private pilot
- Pilot flight hours: 4,947 total, 578 in this make and model, 55 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20170922020889I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AT 16,500 FT. DURING THE CRUISE PHASE OF THE FLIGHT THE CREW EXPERIENCED A RAPID DECELERATION AND HIGH VIBRATION COMING FROM THE ENGINE.  THE CREW DECLARED AN EMERGENCY AND LANDED THE AIRCRAFT SAFELY AT (KTRM) JACQUELINE COCHRAN AIRPORT.  AFTER TAXING TO AN AREA WHERE THEY COULD PERFORM ENGINE RUNS THEY RAN THE AIRCRAFT UP TO 70 AND 86 PERCENT AND ALL ENGINE INDICATIONS WERE NORMAL.  THE CREW ALSO DID A VISUAL INSPECTION OF THE AIRCRAFT AND FOUND NO ISSUES.  A FUEL SAMPLE WAS ALSO TO TAKEN TO ENSURE THAT THERE WAS NOT AN ISSUE WITH THE FUEL. AFTER DISCUSSING THE ISSUE WITH THEIR MECHANIC AND THE PILOTS FLIGHT INSTRUCTOR IT WAS DETERMINED THAT A FLIGHT TO CHECK ALL SYSTEM SHOULD BE CONDUCTED. AFTER THE SUCCESSFUL FLIGHT WAS CONDUCTED THE AIRCRAFT CONTINUED ON TO ITS FINAL DESTINATION WITHOUT ANY FURTHER ISSUES.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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