Casualties unknown

1992-06-19: Stinson 108-3 (N589C) — Stone, Daniel K. — Window Rock, AZ

Window Rock, AZ, US

On June 19, 1992, a Stinson 108-3 (registration N589C) operated by Stone, Daniel K. was involved in an aviation accident near Window Rock, AZ. Investigators recorded the probable cause as: THE FAILURE OF THE PILOT TO CALCULATE THE AIRCRAFT'S PERFORMANCE DATA AND PERFORM A WEATHER EVAULUATION. THE EXISTING HIGH DENSITY ALTITUDE WAS A FACTOR IN THE ACCIDENT. 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

After a preflight weather briefing, a pilot took off in a heavily loaded 166-hp airplane from an airport with a density altitude of 9,988 ft. The aircraft encountered a downdraft, then after climbing again, turned back and collided with terrain.

Accident Overview

A pilot took off from an airport with a density altitude of 9,988 feet mean sea level after receiving a preflight weather briefing. The airplane was a 166-horsepower model and was heavily loaded. There was no evidence that the pilot calculated the density altitude or the aircraft's performance prior to the takeoff.

Sequence of Events

As the aircraft climbed through 400 feet above ground level, it encountered a downdraft and began to descend. The aircraft then started to climb again, and the pilot entered a turn with the intention of returning to the airport. During the turn, the aircraft entered a descent and subsequently collided with the terrain.

Further Details

The specific aircraft type, registration, and operator are not provided in the source. The accident occurred during daylight hours? The source does not specify time of day. No information is available regarding occupants, injuries, or damage beyond the collision with terrain. The pilot's preflight weather briefing was received, but the lack of density altitude and performance calculations is noted. The downdraft was encountered at approximately 400 feet AGL, and the aircraft was able to climb again before the pilot initiated the turn. The final descent during the turn led to the collision.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X14910. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.