# NTSB LAX91LA290: Alon A2, N6570Q, Trinity Center, CA, July 6, 1991

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 5, 1991, 20:00 local (Jul 6, 1991, 03:00 UTC)
- Place: Trinity Center, CA
- Coordinates: 41.049549, -122.780334 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.0495&lon=-122.7803&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 27272
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX91LA290
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/27272/pdf
- Page: https://openairdocs.org/ntsb/LAX91LA290

## Probable cause

THE PILOT'S FAILURE TO ENSURE AN ADEQUATE SUPPLY OF FUEL WAS AVAILABLE. CONTRIBUTING TO THIS ACCIDENT WAS SOFT TERRAIN.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power, approach - vfr pattern - downwind
  - fluid,fuel - exhaustion
  - refueling - not performed, pilot in command (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

THE AIRPLANE WAS ENTERING THE DOWNWIND SEGMENT OF A VFR LANDING APPROACH WHEN THE ENGINE QUIT. UNABLE TO GLIDE TO THE AIRPORT, THE PILOT ELECTED TO LAND ON THE SHORE OF A NEARBY LAKE. DURING THE LANDING ROLL, THE AIRPLANE STRUCK UNEVEN TERRAIN, SHEARING OFF THE NOSE GEAR AND THEN NOSED OVER. AN ANONYMOUS CALL TO 911 REPORTED THE ACCIDENT. LAW ENFORCEMENT PERSONNEL NOTED ABOUT 1 INCH OF FUEL REMAINING IN EACH FUEL TANK. AN INSPECTION OF THE AIRPLANE DID NOT REVEAL ANY MECHANICAL MALFUNCTION. THE PILOT DID NOT POSSESS ANY REQUIRED DOCUMENTS FOR THE AIRPLANE OR HIMSELF, AND PROVIDED A FALSE NAME TO POLICE. THE PILOT'S AIRMAN CERTIFICATE WAS REVOKED IN 1975. THE PILOT DID NOT RETURN ANY REPORTING DOCUMENTS.

## Aircraft

- Registration: [N6570Q](https://openairdocs.org/aircraft/N6570Q), registered now, S/N A-70 (OpenAirDocs)
- Reported make and model: ALON A2
- Registry model: [Alon A2](https://openairdocs.org/model/alon-a2) (registry code 0540102) (OpenAirDocs)
- Registry engine: [Continental C90 series](https://openairdocs.org/engine/continental-c90-series) (registry code 17009, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: A-70
- Engines: CONTINENTAL C-90-12F 90 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Barth E.May
- Registered owner: Lisa A. Fiorina
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, January 2, 2000

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; medical: class 2; flight hours: 2,800 total, 60 in the last 90 days

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 170° at 8 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 99 °F, dew point 54 °F
- Altimeter: 29.00 inHg
- Observed at: RDD, 33 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19910705031079A](https://openairdocs.org/incident/19910705031079A), Jul 5, 1991: Univar A2ALON, Trinity, CA, Substantial damage. Reported engine quit in pattern. Landed on shore of lake. Pilot certificate suspended. Medical expired.

## Other investigations on N6570Q (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 NYC68F0341](https://openairdocs.org/ntsb/NYC68F0341), Jan 9, 1968: Alon A-2 (N6570Q), Hyannis, MA, substantial damage

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.

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