Incident Overview
A crew departed Pyongtaek-Desiderio AAF on a local test flight with the objective of evaluating the aircraft's performance after replacement stall strips had been installed on the outer edges of the wings. During the flight, the crew lost control of the aircraft, which entered a dive and subsequently crashed in a field. Upon impact, the aircraft burst into flames. Both occupants were killed.
Flight Purpose and Events
The test flight was specifically conducted to assess the handling characteristics following the installation of new stall strips. Stall strips are devices attached to the leading edge of a wing to improve stall characteristics by ensuring the root stalls before the tip. The crew was attempting to create stall conditions as part of the test procedure when control was lost.
Investigation Findings
Official investigation determined the probable cause of the accident to be the failure of the crew to follow established procedures while attempting to produce stall conditions. This failure led the aircraft into an irrecoverable situation from which recovery was not possible.
Aftermath
The crash resulted in a post-impact fire that consumed the aircraft. The identities of the two occupants, who were killed, have not been disclosed. No further details regarding the specific aircraft type, registration, or other circumstances have been released.