Casualties unknown

Aircraft Strikes Terrain Near Destination After Radar Service Ends (N717D)

Etiwanda, CA, US

On March 29, 1986, a Beech C35 (registration N717D) was involved in an aviation accident near Etiwanda, 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

A routine flight under radar advisories turned northwest after radar service termination and struck rising terrain at 3,000 feet. The wreckage was discovered nearly a year later, about 10 miles northeast of the destination airport.

Flight and Incident

The flight was routine while receiving radar advisories until the aircraft was approximately 15 miles east of the destination airport. After radar service was terminated, the aircraft turned toward the northwest and subsequently flew into rising terrain at an elevation of about 3,000 feet.

Discovery

The aircraft was reported missing but was not found until April 1, 1986. The crash site was located about 10 miles northeast of the airport.

Conditions

Darkness and marginal weather existed at the crash site at the time of the accident. Approximately 18 miles south at Ontario, California, the 1945 weather conditions were reported as: sky partially obscured, 1,300 feet broken, 5,000 feet overcast, visibility 4 miles with haze, wind from 270 degrees at 10 knots. The elevation at Ontario was 952 feet.

Frequently asked questions

What happened in the 29 Mar 1986 Beech C35 accident near Etiwanda, CA?

A routine flight under radar advisories turned northwest after radar service termination and struck rising terrain at 3,000 feet. The wreckage was discovered nearly a year later, about 10 miles northeast of the destination airport.

What aircraft was involved and where did it happen?

The accident on 29 Mar 1986 involved a Beech C35, registration N717D, at Etiwanda, CA.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X33082. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.