No fatalities

Alief-Andrau Airpark Landing Accident: Right Main Gear Collapse (N780Q)

Alief-Andrau Airpark (Houston), United States of AmericaLanding (descent or approach)

On April 28, 1971, a Mitsubishi MU-2 Marquise (registration N780Q) operated by Private United States of America was involved in an aviation accident near Alief-Andrau Airpark (Houston), United States of America during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The right main gear collapsed on landing due to overload failure caused by an improper level off/touchdown on part of the pilot. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 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 2026-09-03Data APIEditorial standards

An aircraft suffered a right main gear collapse on landing at Alief-Andrau Airpark, veering off the runway. The pilot was seriously injured, and the aircraft was damaged beyond repair.

Incident Overview During a landing at Alief-Andrau Airpark, the right main landing gear of the aircraft collapsed upon touchdown. The incident resulted in the aircraft losing control, veering off the runway, and eventually coming to rest. The pilot sustained serious injuries, and the aircraft sustained damage that rendered it beyond repair. ## Official Findings The investigation determined that the accident was caused by an overload failure of the right main gear. This failure was attributed to an improper level off and touchdown executed by the pilot during the landing phase. The source does not specify the aircraft type, registration, date, operator, or exact location beyond the airpark name.

Probable cause

The right main gear collapsed on landing due to overload failure caused by an improper level off/touchdown on part of the pilot.

Frequently asked questions

What happened in the 28 Apr 1971 Mitsubishi MU-2 Marquise accident near Alief-Andrau Airpark (Houston), United States of America?

An aircraft suffered a right main gear collapse on landing at Alief-Andrau Airpark, veering off the runway. The pilot was seriously injured, and the aircraft was damaged beyond repair.

Were there any fatalities in the 28 Apr 1971 Mitsubishi MU-2 Marquise accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 28 Apr 1971 involved a Mitsubishi MU-2 Marquise, registration N780Q, operated by Private United States of America, at Alief-Andrau Airpark (Houston), United States of America.

What was the probable cause of the accident?

The right main gear collapsed on landing due to overload failure caused by an improper level off/touchdown on part of the pilot.