No fatalities

Pilot Seriously Injured After Twin-Engine Aircraft Strikes Bridge During Emergency Landing Attempt (N510BB)

Duenweg, United States of AmericaLanding (descent or approach)

On September 20, 1974, a Piper PA-31-310 Navajo (registration N510BB) operated by INA Aviation was involved in an aviation accident near Duenweg, United States of America during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: Improper IFR operation on part of the pilot who took improper in-flight decisions. The following contributing factors were reported: - Rain, - Fog, - Low ceiling, - Low on fuel, - Adverse/unfavorable weather, - Missed second ILS approach, saw highway,… This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 9 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary report: the U.S. National Transportation Safety Board (NTSB) historical archive (1962-1981)Updated 2026-07-04Data APIEditorial standards

A pilot flying solo from Albuquerque to Saint Louis via Joplin was seriously injured after his twin-engine airplane struck a highway bridge during an emergency landing attempt on the third approach, following two missed approaches in low fuel and marginal weather conditions.

Flight Details

The pilot, the sole occupant of the twin-engine airplane, was conducting a flight from Albuquerque to Saint Louis with an intermediate stop in Joplin. The accident occurred during the approach phase at night under marginal weather conditions.

Accident Sequence

On the first approach, the pilot was unable to locate the runway and initiated a go-around. A second approach was also abandoned a few minutes later. During the third approach, low fuel reserves compelled the pilot to attempt an emergency landing on a highway. In limited visibility, the aircraft struck a highway bridge and crashed approximately 5 miles southeast of the threshold of runway 31. The pilot sustained serious injuries, and the aircraft was totally destroyed.

Probable Cause and Contributing Factors

The official investigation determined the probable cause to be improper IFR operation on the part of the pilot, who took improper in-flight decisions. Contributing factors reported include rain, fog, low ceiling, low fuel, adverse/unfavorable weather, missing the second ILS approach, sighting the highway, attempting to land, and striking the bridge.

Frequently asked questions

What happened in the 20 Sept 1974 Piper PA-31-310 Navajo accident near Duenweg, United States of America?

A pilot flying solo from Albuquerque to Saint Louis via Joplin was seriously injured after his twin-engine airplane struck a highway bridge during an emergency landing attempt on the third approach, following two missed approaches in low fuel and marginal weather conditions.

Were there any fatalities in the 20 Sept 1974 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 20 Sept 1974 involved a Piper PA-31-310 Navajo, registration N510BB, operated by INA Aviation, at Duenweg, United States of America.

What was the probable cause of the accident?

Improper IFR operation on part of the pilot who took improper in-flight decisions. The following contributing factors were reported: - Rain, - Fog, - Low ceiling, - Low on fuel, - Adverse/unfavorable weather, - Missed second ILS approach, saw highway, attempted landing and struck bridge.