1 fatality

Cargo Aircraft Strikes Hill in Low IFR Conditions (N54265)

Nightmute, United States of AmericaFlight

On May 7, 1987, a Piper PA-31-350 Navajo Chieftain (registration N54265) operated by Yute Air Alaska was involved in an aviation accident near Nightmute, United States of America in flight. One person was killed. Investigators recorded the probable cause as: Occurrence #1: in flight encounter with weather Phase of operation: cruise - normal Findings 1. (c) in-flight planning/decision - improper - pilot in command 2. (c) vfr flight into imc - intentional - pilot in command 3. (c) weather condition - fog 4. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary report: the U.S. National Transportation Safety Board (NTSB) historical archiveUpdated 2026-07-04Data APIEditorial standards

A Part 135 on-demand cargo flight struck a 350-foot hill, destroying the aircraft. The pilot was the sole occupant and was killed. Weather in the area featured ceilings below 500 feet and visibility less than one mile.

Accident Overview

On the day of the accident, a cargo aircraft operating under Part 135 on-demand air taxi regulations was destroyed when it struck a 350-foot-high hill. The flight was the only one among several air taxi operators and company aircraft that did not cancel operations. The pilot, who was the only person on board, was killed.

Weather Conditions

Both ground reports and pilot reports indicated that the weather in the accident area included ceilings below 500 feet and visibility less than one mile. These conditions were widespread and led other operators to cancel their flights.

Investigation Findings

The official investigation identified several contributing factors related to the pilot's decision-making and the environmental conditions. During the cruise phase of flight, the pilot engaged in improper in-flight planning and decision-making, intentionally flew visual flight rules (VFR) into instrument meteorological conditions (IMC), and misjudged the weather. Specific weather conditions cited included fog and low ceilings.

Collision Details

Following the encounter with adverse weather, the aircraft entered a maneuvering phase and subsequently collided with terrain. The impact with the 350-foot hill resulted in the destruction of the aircraft.

Probable cause

Occurrence #1: in flight encounter with weather Phase of operation: cruise - normal Findings 1. (c) in-flight planning/decision - improper - pilot in command 2. (c) vfr flight into imc - intentional - pilot in command 3. (c) weather condition - fog 4. (c) weather condition - low ceiling 5. (c) weather evaluation - misjudged - pilot in command ---------- Occurrence #2: in flight collision with terrain/water Phase of operation: maneuvering

Frequently asked questions

What happened in the 7 May 1987 Piper PA-31-350 Navajo Chieftain accident near Nightmute, United States of America?

A Part 135 on-demand cargo flight struck a 350-foot hill, destroying the aircraft. The pilot was the sole occupant and was killed. Weather in the area featured ceilings below 500 feet and visibility less than one mile.

Were there any fatalities in the 7 May 1987 Piper PA-31-350 Navajo Chieftain accident?

The accident was fatal, resulting in 1 fatality.

What aircraft was involved and where did it happen?

The accident on 7 May 1987 involved a Piper PA-31-350 Navajo Chieftain, registration N54265, operated by Yute Air Alaska, at Nightmute, United States of America.

What was the probable cause of the accident?

Occurrence #1: in flight encounter with weather Phase of operation: cruise - normal Findings 1. (c) in-flight planning/decision - improper - pilot in command 2. (c) vfr flight into imc - intentional - pilot in command 3. (c) weather condition - fog 4. (c) weather condition - low ceiling 5. (c) weather evaluation -…