Casualties unknown

CAP Training Flight Collides with Terrain During High-Altitude Go-Around (N398Z)

Swall Meadows, CA, US

On June 7, 1986, a Beech M35 (registration N398Z) operated by R.& S.richmong & B.guberman was involved in an aviation accident near Swall Meadows, CA. Investigators recorded the probable cause as: The trainee-pilot allowing airspeed to slow below best angle of climb and failing to promptly turn away from rising terrain, and the CFI's failure to adequately monitor the student's performance and to issue mission abort instructions in a timely manner. 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 2026-07-04Data APIEditorial standards

A Civil Air Patrol training exercise ended in a collision with terrain after a go-around attempt at a high-altitude airstrip. The trainee-pilot slowed below best angle of climb and failed to turn away from rising terrain, while the CFI did not adequately monitor or issue timely abort instructions.

Background

The Civil Air Patrol organized and provided instructors for a two-day course teaching CAP mission pilots techniques for high-altitude search flying. The curriculum included a landing approach to an airstrip with an elevation of 6,080 feet. The approach was to be terminated with a go-around, which required promptly turning the aircraft away from rising terrain beyond the departure end of the runway.

The Accident

During the training flight, the trainee-pilot flew the approach but allowed the airspeed to slow below the best angle of climb speed. As the landing gear and flaps were being raised, the pilot also failed to promptly turn the aircraft away from the rising terrain. Due to the high density altitude of 8,500 feet, the aircraft's climb performance was degraded. Subsequently, the aircraft collided with the rising terrain.

Findings

The investigation found that the CFI failed to adequately monitor the student's performance and failed to follow established CAP procedures, which required him to issue mission abort instructions in a timely manner.

Probable cause

The trainee-pilot allowing airspeed to slow below best angle of climb and failing to promptly turn away from rising terrain, and the CFI's failure to adequately monitor the student's performance and to issue mission abort instructions in a timely manner.

Frequently asked questions

What happened in the 7 Jun 1986 Beech M35 accident near Swall Meadows, CA?

A Civil Air Patrol training exercise ended in a collision with terrain after a go-around attempt at a high-altitude airstrip. The trainee-pilot slowed below best angle of climb and failed to turn away from rising terrain, while the CFI did not adequately monitor or issue timely abort instructions.

What aircraft was involved and where did it happen?

The accident on 7 Jun 1986 involved a Beech M35, registration N398Z, operated by R.& S.richmong & B.guberman, at Swall Meadows, CA.

What was the probable cause of the accident?

The trainee-pilot allowing airspeed to slow below best angle of climb and failing to promptly turn away from rising terrain, and the CFI's failure to adequately monitor the student's performance and to issue mission abort instructions in a timely manner.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X33899. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.