Incident at THUNDER BAY ON (CYQT) (Communication navigation surveillance/air traffic system)
1997-03-13: A partial MACS communications failure occurred with a lightning strike at 0213Z, with the loss of position 3 at the Thunder Bay Flight Service Station. Position 2 was lost at 0219Z, and position 4 was already unserviceable from the previous thunderstorm (see CADORS C94/193). A complete communications failure occurred at 0249Z. Position 1 was reset 3 times between 0249Z and 0529Z, at which time a complete outage occurred until 1020Z, when positions 1 and 3 were returned to service. During the outage, which lasted more than 5 hours, all frequencies, telephones, alarms and monitors were unserviceable. Thunder Bay FSS reported that if thunderstorms threaten again, then one position will be removed from service to save one spare card.
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