Casualties unknown

1994-12-19: North American NAVION-A (N8794H) — Big Bear City, CA

Big Bear City, CA, US

On December 19, 1994, a North American NAVION-A (registration N8794H) was involved in an aviation accident near Big Bear City, CA. Investigators recorded the probable cause as: the pilot's initial overrotation, his failure to attain the proper climb airspeed, and an inadvertent entry into a stall mush condition. A factor in the accident was the high-density altitude. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

An aircraft lifted off in an unusually nose-high attitude and settled into trees 0.4 miles from the runway end. Examination found no significant discrepancies.

Accident Details

Witnesses reported that the aircraft lifted off Runway 8 in an unusually nose-high attitude with a shallow climb angle. The aircraft continued on the runway heading until it settled into a group of trees 0.4 miles from the end of the runway. The stand of trees off the end of the runway was between 25 to 35 feet in height and situated on slightly rising terrain.

Aircraft Performance and Runway Information

The aircraft owner's manual indicated that the distance required to take off and clear a 50-foot obstacle under no wind conditions would be approximately 4,700 feet. The runway was 5,850 feet long, hard-surfaced, with a slight rise in the center but otherwise no slope. Wing flaps were not utilized during the takeoff.

Environmental Conditions

Winds were 7 knots from 080 degrees. The airport elevation is 6,750 feet, and the temperature was about 51 degrees Fahrenheit. The density altitude was calculated to be 7,600 feet.

Post-Accident Investigation

No significant discrepancies were noted in the examination of the engine or airframe. The Safety Board concurred with the technician that the abnormality found in the carburetor had no role in the cause of this accident.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X02736. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.