Casualties unknown

Pilot's Scrawled Notes Reference Stall and Spin After Terrain Encounter (N7699Y)

Flagstaff, AZ, US

On August 6, 1983, a Piper PA-18-150 (registration N7699Y) was involved in an aviation accident near Flagstaff, AZ. 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 2026-06-10Data APIEditorial standards

A pilot on a pleasure flight over rising terrain near Flagstaff, AZ, crashed into trees after turning downhill to gain altitude. The pilot, seriously injured, was found the next morning. Personal notes indicated 'low plus slow, stalled & spin.'

Accident Overview

A pilot reported that during a pleasure flight north of Flagstaff, Arizona, he encountered rising terrain and recognized a need for more altitude. In response, he turned the aircraft toward a downhill direction. However, the aircraft subsequently collided with tree tops when the pilot was unable to maintain adequate airspeed and clearance from the terrain. The aircraft was later reported missing, prompting a search. The pilot, who was seriously injured, and the aircraft were located the following morning. The crash site elevation was approximately 9,000 feet.

Investigation Details

During the investigation, investigators found that the pilot had scratched personal notes to his family that included the message 'low plus slow, stalled & spin.' The official report noted the pilot's account of the sequence of events leading to the crash, but did not explicitly assign a probable cause. The terrain and altitude conditions were documented as factors in the accident sequence.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X44208. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.