No fatalities

Aircraft overrun at Chiang Rai Airport (HS-THG)

Chiang Rai, ThailandLanding (descent or approach)

On June 21, 1980, an Avro 748 (registration HS-THG) operated by Thai Airways International was involved in an aviation accident near Chiang Rai, Thailand during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The aircraft failed to stop within the runway limits following touchdown, leading to a runway excursion. 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 reportUpdated 2026-06-12Data APIEditorial standards

An aircraft failed to stop after landing at Chiang Rai Airport, resulting in an excursion into a roadside ditch and several injuries.

What happened

Upon completing its landing at Chiang Rai Airport, the aircraft experienced mechanical or operational difficulties that prevented it from coming to a halt within the available runway length. As the plane continued past the end of the paved surface, it overran the runway and entered a ditch located alongside the airfield.

During the emergency evacuation of the aircraft, all 21 occupants were successfully removed from the wreckage. While everyone survived the incident, a portion of the passengers and crew sustained injuries during the excursion and subsequent egress.

Findings

  • The aircraft was unable to decelerate sufficiently following touchdown.
  • The sequence of events concluded with the plane coming to rest in an embankment/ditch.

Probable cause

The aircraft failed to stop within the runway limits following touchdown, leading to a runway excursion.