# Accident 20000328012509A: Univar A2AALON, Hernando, FL, March 28, 2000

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 28, 2000, 12:43 local time
- Place: Hernando, FL
- Airport: Twelve Oaks Airport
- Damage: Substantial damage
- Phase of flight: To Init Climb(1st Pwr Reduct)
- Operating rules: General operating rules (Part 91)
- Location: 28.8992° N, 82.3709° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=28.8992&lon=-82.3709&mi=10
- Aircraft: N67HS (not matched to a registry record)
- Reported make and model: UNIVAR A2AALON
- Reported engine: CONT C9016F
- Fatal injuries: 0
- Pilot flight hours: 1,498 total, 850 in this make and model, 52 in the last 90 days
- NTSB investigation: [NTSB ATL00LA039](https://openairdocs.org/ntsb/ATL00LA039) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20000328012509A

## Narrative

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

(-23) ON MARCH 28, 2000, AT 0930 LOCAL TIME, ALON-415-A2A, N67HS, REGISTERED TO^PRIVACY DATA^,DEVELOPED ENGINE PROBLEMS AND COLLIDED WITH TREES AFTER TAKEOFF FROM TWELVE OAKS, A PRIVATE AIRPORT, HERNANDO, FL. WHILE ON A PLEASURE FLIGHT. VIAUAL METEOROLOGICAL CONDITIONS PREVAILED AT THIS TIME. THE A/C WAS SUBSTANTIALLY DAMAGED AND THE PILOT WAS SERIOUSLY INJURED. (.4)ACCORDING TO THE PILOT, JUST AFTER ROTATION THE ENGINE LOST POWER AND SUBSEQUENTLY IMPACTED TREES BETWEEN TWO HOMES. EXAMINATION OF THE ENGINE FOUND NORMAL OPERATIONAL SIGNATURES THROUGHOUT. EXAMINATION OF THE CARBURETOR FOUND THAT THE CARBURETOR ACCELERATOR PUMP DID NOT OPERATE WHEN THE THROTTLE WAS OPENED. THE CARBURETOR WAS DISASSEMBLED AND THE ACCELERATOR LOWER CHECK VALVE WAS FOUND CONTAMINATED WITH RUSTY DEBRIS. THE ACCELERATION LEATHER PLUNGER WAS FOUND HARD AND RED IN COLOR, SIMILAR TO THE RUSTY RESIDUE. THE LEATHER PLUNGER DID NOT FIT TIGHTLY IN THE ACCELERATION WELL. THE CARBURETOR BOWL EXHIBITED RUSTY RESIDUE IN THE LOWER PORTION. THE FLOAT LEVEL WAS NOT MEASURED, BUT VISUALLY APPEARED NORMAL. ADDITIONALLY, WEATHER CONDITIONS WERE FAVORABLE FOR THE FORMATION OF CARBURETOR ICE AT THE TIME OF THE ACCI          DENT.

## 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 ATL00LA039](https://openairdocs.org/ntsb/ATL00LA039), Mar 28, 2000: Alon A-2A (N67HS), Hernando, FL, substantial damage. Probable cause: Loss of power due to carburetor contamination. Factors, were the trees, and the weather conditions were conducive to carburetor icing.

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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