No fatalities

Double Engine Failure and Forced Landing After Fuel Contamination (N91BB)

Edinburg, United States of AmericaFlight

On October 16, 1988, a Piper PA-31-310 Navajo (registration N91BB) operated by Texas Air Charter was involved in an aviation accident near Edinburg, United States of America in flight. No fatalities were reported. Investigators recorded the probable cause as: Occurrence #1: loss of engine power (total) - nonmechanical due to fuel contamination (water and dissolved solids). Occurrence #2: loss of control - in flight due to airspeed not maintained, resulting in uncontrolled spiral. 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

An aircraft experienced double engine failure due to fuel contamination with water and dissolved solids after refueling. The pilot executed a gear-up emergency landing on a road; the aircraft was destroyed by fire. All seven occupants were uninjured.

Accident Description

The aircraft experienced a double engine failure during a climb to cruise. According to the pilot, immediately after the left engine failed, the aircraft rolled left, the stall warning activated, and it entered a left spiral. During the two-turn spiral, the right engine also failed. The pilot's attempts to restart the engines were unsuccessful. The pilot subsequently performed a successful gear-up emergency landing on a road. However, the aircraft was destroyed by a post-crash fire.

Investigation Findings

The investigation revealed that both engine fuel systems were contaminated with water and dissolved solids. The aircraft had just been refueled at a foreign airport. All seven occupants were uninjured.

Official Probable Cause Findings

The investigation identified multiple occurrences:

  • Occurrence #1: Loss of engine power (total) – nonmechanical, during climb to cruise. Findings: one engine; fluid, fuel – contamination; fluid, fuel – water; maintenance, service of aircraft/equipment – improper – FBO personnel.
  • Occurrence #2: Loss of control – in flight, during climb to cruise. Findings: airspeed (Vmc) – not maintained – pilot in command; spiral – uncontrolled.
  • Occurrence #3: Loss of engine power (total) – nonmechanical, during descent – uncontrolled. Findings: all engines; fluid, fuel – contamination; fluid, fuel – water.
  • Occurrence #4: Forced landing, during descent – emergency.
  • Occurrence #5: In flight collision with terrain/water, during landing – roll. Findings: wheels up landing – performed – pilot in command.

Frequently asked questions

What happened in the 16 Oct 1988 Piper PA-31-310 Navajo accident near Edinburg, United States of America?

An aircraft experienced double engine failure due to fuel contamination with water and dissolved solids after refueling. The pilot executed a gear-up emergency landing on a road; the aircraft was destroyed by fire. All seven occupants were uninjured.

Were there any fatalities in the 16 Oct 1988 Piper PA-31-310 Navajo accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 16 Oct 1988 involved a Piper PA-31-310 Navajo, registration N91BB, operated by Texas Air Charter, at Edinburg, United States of America.

What was the probable cause of the accident?

Occurrence #1: loss of engine power (total) - nonmechanical due to fuel contamination (water and dissolved solids). Occurrence #2: loss of control - in flight due to airspeed not maintained, resulting in uncontrolled spiral. Occurrence #3: loss of engine power (total) - nonmechanical due to fuel contamination.…