Incident at Gander Area Control Centre (ACC) (ATM - operations)
2011-02-18: UPDATE TSB: A11A0001: An electrical power malfunction occurred at the Gander ACC followed by an evacuation of the building at 1040 NST due to smoke. Prior to the evacuation, four low-level domestic aircraft were cleared to return to their departure point. All inbound high-level oceanic traffic were instructed to remain on their present routing and to contact Moncton or Montreal ACC within range. The malfunction was a result of a commercial power failure which caused an uninterrupted power supply (UPS) unit to attempt to switch to battery backup which would normally be followed by switching to generators once they were on line. The UPS unit malfunctioned causing the electrical power interruption and subsequent smoke. ACC personnel re-entered the building approximately 40 minutes after the occurrence. After re booting and checking the system, the center was operational at approximately 1400 NST
2011-01-28: At approximately 14:10Z, the Gander Area Control Centre (ACC) experienced a commercial power failure and a subsequent electrical system malfunction. The malfunction was localized to the electrical equipment in the electrical room but smoke resulted in an evacuation of the facility for approximately 40 minutes. Aircraft proposed to leave during that time in the United States were delayed from zero to one hour. Aircraft that were in the Oceanic airspace at the time flew through. Other aircraft were diverted through the Moncton ACC. TSB Case Closed.
|Occurred At||- 14:10|
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