Casualties unknown

Private Aircraft Crashes into Mountain Canyon During Scenic Flight (N6514E)

Avalon, CA, US

On May 7, 1998, a Cessna 172N (registration N6514E) was involved in an aviation accident near Avalon, CA. Investigators recorded the probable cause as: The pilot's failure to maintain terrain clearance while exploring a scenic area, which resulted in a collision with mountainous terrain. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-19Data APIEditorial standards

A private pilot and three passengers died when their aircraft crashed into a steep mountain canyon in California while exploring an island off the coast.

What happened

A private pilot was conducting a personal flight with three passengers to visit an island located off the California coastline. Following departure from the initial point, the pilot diverted from the direct route to explore the distant side of the scenic island. The aircraft eventually impacted terrain in a near-inverted attitude at the confluence of two narrowing box canyons on a steep 40-degree mountainside within the island.

The investigation

Investigators examined the wreckage site and the remaining components of the aircraft to determine the sequence of events leading to the impact. A thorough inspection was conducted to rule out any pre-existing issues with the airframe or propulsion systems before the collision with the terrain.

Findings

The examination revealed that there were no preimpact mechanical malfunctions or failures of the aircraft that would have hindered normal operation. The crash occurred during the exploration phase of the flight, resulting in the loss of all individuals on board.

Probable cause

The pilot's failure to maintain terrain clearance while exploring a scenic area, which resulted in a collision with mountainous terrain.

All Cessna 172 accidents →

Frequently asked questions

What happened in the 7 May 1998 Cessna 172N accident near Avalon, CA?

A private pilot and three passengers died when their aircraft crashed into a steep mountain canyon in California while exploring an island off the coast.

What aircraft was involved and where did it happen?

The accident on 7 May 1998 involved a Cessna 172N, registration N6514E, at Avalon, CA.

What was the probable cause of the accident?

The pilot's failure to maintain terrain clearance while exploring a scenic area, which resulted in a collision with mountainous terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X10117. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.