No fatalities

AVIAT AIRCRAFT INC A-1B accident at Matanuska Glacier, AK, 13 Jul 2023

Matanuska Glacier, AK, United States

On July 13, 2023, an AVIAT AIRCRAFT INC A-1B was involved in an aviation accident near Matanuska Glacier, AK. No fatalities were reported. Investigators recorded the probable cause as: The airplane’s encounter with downdrafts resulting in decreased performance insufficient to outclimb rising terrain. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The airplane’s encounter with downdrafts resulting in decreased performance insufficient to outclimb rising terrain.

— NTSB Determination

Contributing factors

PilotClimb rate — Not attained/maintainedContributed to outcome

Frequently asked questions

What happened in the 13 Jul 2023 AVIAT AIRCRAFT INC A-1B accident near Matanuska Glacier, AK?

The airplane’s encounter with downdrafts resulting in decreased performance insufficient to outclimb rising terrain.

Were there any fatalities in the 13 Jul 2023 AVIAT AIRCRAFT INC A-1B accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 13 Jul 2023 involved an AVIAT AIRCRAFT INC A-1B, at Matanuska Glacier, AK.

What was the probable cause of the accident?

The airplane’s encounter with downdrafts resulting in decreased performance insufficient to outclimb rising terrain.