Casualties unknown

Aircraft Collides with Ground During Traffic Pattern Approach (N391B)

Antioch, CA, US

On May 31, 1983, a Beech H35 (registration N391B) was involved in an aviation accident near Antioch, CA. 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

During a traffic pattern approach, an aircraft entered a nose-low descent after the left wing dropped, striking the ground at a 27-degree angle. Investigation found no mechanical problems but noted unusual pilot training.

Accident Overview

An aircraft collided with the ground in a nose-low attitude while flying in the traffic pattern to land. The aircraft came to rest after striking the ground at a nose-low angle of 27 degrees. No ground scars were found beyond the initial point of contact; the lower fuselage dug approximately 16 inches into the ground.

Witness Observations

Witnesses described the traffic pattern as being close in, slow, and low compared to normal traffic. They noted the aircraft's attitude as nose high. As the aircraft turned to final approach, the left wing dropped, and the aircraft entered a steep nose-down descent, culminating in the impact.

Aircraft Examination

Examination of the aircraft revealed no problems. No mechanical or structural issues were identified that could have contributed to the event.

Pilot Training

Investigation into the pilot's training revealed an unusual history. The pilot's first 31 hours of "dual" instruction were unsigned, and a witness stated that this instruction was given by a private pilot. The remaining 46 hours of instruction came from two different instructors: approximately 11 hours from one and about 4 hours from the other.

Frequently asked questions

What happened in the 31 May 1983 Beech H35 accident near Antioch, CA?

During a traffic pattern approach, an aircraft entered a nose-low descent after the left wing dropped, striking the ground at a 27-degree angle. Investigation found no mechanical problems but noted unusual pilot training.

What aircraft was involved and where did it happen?

The accident on 31 May 1983 involved a Beech H35, registration N391B, at Antioch, CA.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X43019. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.