3 fatalities

Both Engines Fail After Jet Fuel Misfueling, Forced Landing Ends in Fatal Crash (N3580D)

San Antonio, United States of AmericaTakeoff (climb)

On April 18, 1982, a Piper PA-31-350 Navajo Chieftain (registration N3580D) operated by San Jet was involved in an aviation accident near San Antonio, United States of America during takeoff. 3 people were killed. Investigators recorded the probable cause as: Occurrence #1: loss of engine power (total) - nonmechanical; Phase of operation: takeoff - initial climb; Findings: 1. fluid, fuel - improper; 2. maintenance, service of aircraft/equipment - improper - FBO personnel; 3. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Source recordUpdated 2026-07-04Data APIEditorial standards

An aircraft was destroyed by fire after colliding with trees during a forced landing following a double engine failure caused by misfueling with jet fuel instead of gasoline. All three occupants were killed.

Accident Overview

An aircraft experienced a total loss of engine power during the initial climb phase of takeoff. The power loss occurred because the aircraft had been refueled with jet fuel instead of the required gasoline. The investigation determined that the misfueling was improper and attributed to personnel at the fixed-base operator (FBO). Additionally, the operator's management had provided inadequate training, and the aircraft's annunciator panel lights were found to be improper.

Forced Landing and Collision

After the engine failure, the pilot attempted a forced landing. During the approach, the aircraft entered a turn toward a landing area. The weather conditions at the time included instrument flight rules (IFR) with low ceiling, fog, and rain. The aircraft subsequently collided with trees and was destroyed by a post-impact fire. All three occupants onboard were killed.

Investigation Findings

The official investigation identified multiple contributing factors across several occurrences. The primary occurrence was the total loss of engine power due to nonmechanical causes, specifically improper fuel. Maintenance and service of the aircraft by FBO personnel were also improper. Inadequate training by the company or operator management was cited, as well as improper annunciator panel lights. During the forced landing, environmental factors included dark night, low ceiling, fog, and the presence of trees.

The sequence of events included the loss of engine power during takeoff, the ensuing forced landing, an in-flight collision with terrain/water during maneuvering, and an uncontrolled descent leading to a second collision with terrain/water.

Probable cause

Occurrence #1: loss of engine power (total) - nonmechanical; Phase of operation: takeoff - initial climb; Findings: 1. fluid, fuel - improper; 2. maintenance, service of aircraft/equipment - improper - FBO personnel; 3. inadequate training - company/operator management; 4. annunciator panel light(s) - improper. Occurrence #2: forced landing; Phase of operation: landing. Occurrence #3: in flight collision with terrain/water; Phase of operation: maneuvering - turn to landing area (emergency); Findings: 5. light condition - dark night; 6. weather condition - low ceiling; 7. weather condition - fog; 8. object - tree(s). Occurrence #4: in flight collision with terrain/water; Phase of operation: descent - uncontrolled.

Frequently asked questions

What happened in the 18 Apr 1982 Piper PA-31-350 Navajo Chieftain accident near San Antonio, United States of America?

An aircraft was destroyed by fire after colliding with trees during a forced landing following a double engine failure caused by misfueling with jet fuel instead of gasoline. All three occupants were killed.

Were there any fatalities in the 18 Apr 1982 Piper PA-31-350 Navajo Chieftain accident?

The accident was fatal, resulting in 3 fatalities.

What aircraft was involved and where did it happen?

The accident on 18 Apr 1982 involved a Piper PA-31-350 Navajo Chieftain, registration N3580D, operated by San Jet, at San Antonio, United States of America.

What was the probable cause of the accident?

Occurrence #1: loss of engine power (total) - nonmechanical; Phase of operation: takeoff - initial climb; Findings: 1. fluid, fuel - improper; 2. maintenance, service of aircraft/equipment - improper - FBO personnel; 3. inadequate training - company/operator management; 4. annunciator panel light(s) - improper.…