On August 5, 1990, a Rockwell Turbo Commander 680/681 (registration N444GB) operated by International Airboats was involved in an aviation accident near Keflavik, Iceland during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: The pilot's experience on this type of aircraft was limited to 15 hours and he failed to calculate the fuel consumption correctly prior to departure from Frobisher Bay. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).
During a ferry flight from Frobisher Bay, both engines failed on approach to Keflavik Airport due to fuel exhaustion. The aircraft stalled and crashed short of the runway, injuring both pilots and destroying the aircraft.
Incident Overview
While approaching Iceland on a ferry flight from Frobisher Bay, the crew declared an emergency due to a fuel shortage and requested permission to divert to Keflavik Airport. On final approach to runway 29, both engines failed simultaneously. The aircraft stalled and crashed on a road located 1,500 meters short of the runway. Both pilots were injured and the aircraft was destroyed.
Investigation Findings
Investigators determined that the pilot had only 15 hours of experience on this type of aircraft. He failed to calculate the fuel consumption correctly prior to departure from Frobisher Bay. The pilot calculated the flight as being 7 hours and 15 minutes, while the aircraft's autonomy is 8 hours and 20 minutes. Both engines failed after six hours and 15 minutes of flight. Poor flight planning and preparation were considered contributing factors.
Probable cause
The pilot's experience on this type of aircraft was limited to 15 hours and he failed to calculate the fuel consumption correctly prior to departure from Frobisher Bay. It was determined that he calculated the flight as being 7 hours and 15 minutes while the autonomy of this aircraft is 8 hours and 20 minutes. Investigations revealed that both engines failed after six hours and 15 minutes of flight. Poor flight planning and preparation were considered as contributing factors.