# Accident 20050820034099A: Univar A2AALON, Helena, MT, August 20, 2005

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 20, 2005, 07:54 local time
- Place: Helena, MT
- Airport: Helena Regional Airport
- Damage: Substantial damage
- Phase of flight: Forced/Precautionary Landing
- Operating rules: General operating rules (Part 91)
- Location: 46.6067° N, 111.9828° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=46.6067&lon=-111.9828&mi=10
- Aircraft: N5467F, a cancelled registration (https://openairdocs.org/deregistered/N5467F-2018-01-24) (OpenAirDocs)
- Registry model: Alon A-2A (registry code 0540104, https://openairdocs.org/model/alon-a-2a) (OpenAirDocs)
- Registry engine: Continental C90 series (registry code 17009, https://openairdocs.org/engine/continental-c90-series) (OpenAirDocs)
- Reported make and model: UNIVAR A2AALON
- Reported engine: CONT C9016F
- Fatal injuries: 0
- Pilot flight hours: 190 total, 155 in this make and model, 4 in the last 90 days
- NTSB investigation: [NTSB SEA05LA176](https://openairdocs.org/ntsb/SEA05LA176) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20050820034099A

## Narrative

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

(-23) N5467F DEPARTED FROM THE HELENA, MONTANA, AIRPORT ON RUNWAY 27. THE PILOT STATED THAT WHILE CLIMBING TO APPROXIMATELY 100 FEET AGL, THE ENGINE STARTED RUNNING ROUGH FOLLOWED BY A PARTIAL LOSS OF POWER. HE ATTEMPTED A LEFT TURN BACK TO THE RUNWAY; ABOUT 45 DEGREES THRU THE TURN THE PLANE IMPACTED THE GROUND, BOUNCED ONCE, THEN CAME TO REST INVERTED. THE PILOT AND PASSENGER SUSTAINED MINOR INJURIES. THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE. ON 8/26/05, A FIELD INSPECTION WAS PERFORMED ON THE AIRCRAFT'S ENGINE. A COMPRESSION CHECK FOUND #1,#2,#3 CYLINDERS NORMAL, #4 CYLINDER APPEARED BELOW NORMAL. ADDITIONALLY #4 BOTTOM SPARK PLUG WAS FULL OF OIL; ALL OTHER SPARK PLUGS WERE FOUND IN GOOD CONDITION. MAGNETO TIMING WAS CHECKED AND FOUND TO BE WITHIN LIMITS. OPERATIONAL CHECK OF THE MAGNETOS WERE FOUND TO BE NORMAL. THE CARBURETOR WAS REMOVED AND SENT TO THE NTSB FOR TESTING. THIS REPORT MAY BE AMENDED DEPENDING ON THE RESULTS OF THE CARBURETOR.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA05LA176](https://openairdocs.org/ntsb/SEA05LA176), Aug 20, 2005: Alon A-2A (N5467F), Helena, MT, substantial damage. Probable cause: The loss of engine power for undetermined reasons, which resulted in a forced landing and nose over. A factor contributing to the accident was the ground bordering the runway pavement.

## Other reports on N5467F (1)

Matched to the same aircraft by N-number and date.

- [Incident 19920402008259I](https://openairdocs.org/incident/19920402008259I), Apr 2, 1992: Univar A2AALON (N5467F), Columbus, MT, Minor damage. Engine failed after takeoff. Emergency landing. Unable to find cause of engine stoppage.

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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