Saab 340 crew just 2s from terrain collision: inquiry
Finnish investigators have revealed that pilots of a Latvian Saab 340 freighter ignored ground-proximity warnings during a highly-unstable low approach to Mariehamn airport.
At one point the RAF-Avia aircraft had a descent rate of 5,000ft/min, and was just 2s from a ground collision, after the crew lost control as they attempted to land on runway 21.
The approach required tracking an arc 10nm from the airport’s VOR/DME beacon before turning left and crossing the PEXUT fix at 1,800ft.
But while the Saab intercepted the arc it turned left prematurely, meaning it was offset by 40° to the left of the proper approach course.
Finnish investigation authority SIAF says it “could not categorically establish” the reason for the left turn, adding that analysis showed the captain’s explanation – a flight-management system fault – was “unlikely”.
At one point the RAF-Avia aircraft had a descent rate of 5,000ft/min, and was just 2s from a ground collision, after the crew lost control as they attempted to land on runway 21.
The approach required tracking an arc 10nm from the airport’s VOR/DME beacon before turning left and crossing the PEXUT fix at 1,800ft.
But while the Saab intercepted the arc it turned left prematurely, meaning it was offset by 40° to the left of the proper approach course.
Finnish investigation authority SIAF says it “could not categorically establish” the reason for the left turn, adding that analysis showed the captain’s explanation – a flight-management system fault – was “unlikely”.
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