Flight Control Software Glitch Haunted Cyclone Helicopter During Trials
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May 19, 2020 - by Murray Brewster for cbc.ca
One defence expert suggests the crash probe will focus on what grounded the fleet three years ago
The CH-148 Cyclone helicopter has what the air force calls a "triple redundant" flight control system — and during a 2017 training mission off Nova Scotia, all three of those computers momentarily failed at once.
It was a major software glitch, alarming enough to ground the fleet for nine weeks.
At the time, the military described the incident publicly as a "severe bump" which reset the controls and caused the aircraft to briefly and suddenly lose altitude. The pilot managed to recover and land safely.
One defence expert now says that incident may prove to be vitally important as investigators probe the cause of last month's Cyclone crash in the Ionian Sea.
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