On July 10, 1991, a Piper PA-31-350 Navajo Chieftain (registration PK-PNR) operated by PTP IV was involved in an aviation accident near Bengkalis, Indonesia in flight. 5 people were killed. Investigators recorded the probable cause as: The aircraft's structure failed because it was subjected to maneuvers that exceeded its operational flight limits. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).
A twin-engine aircraft crashed in a wooded area near Bengkalis during an executive flight, resulting in five fatalities.
What happened
A twin-engine aircraft was operating an executive flight departing from Simpang Tiga when the incident occurred. While en route to its destination, the aircraft experienced a sudden structural failure. This failure caused the plane to enter a steep dive, ultimately impacting a wooded region situated near Bengkalis.
All five people on board, consisting of the pilot and four passengers, were killed in the crash. There were no survivors found at the site of the impact.
Findings
Investigations into the accident determined that the aircraft was subjected to maneuvers exceeding its design flight envelope. This extreme stress led to the structural disintegration of the airframe during the flight.
Probable cause
The aircraft's structure failed because it was subjected to maneuvers that exceeded its operational flight limits.