DH8C / P180, Ottawa ON Canada, 2013

DH8C / P180, Ottawa ON Canada, 2013

Summary

On 1 December 2013, a small aircraft taxing for departure at night was cleared to cross an active runway and did so as a DHC8 was taking off from the same runway. Separation was significant and there was no actual risk of collision. The Investigation found that the GND controller had issued clearance to the taxiing aircraft when he had responsibility for its whole taxi route but had neither updated the aircraft status system nor directly advised of the taxiing aircraft when passing responsibility for part of its cleared route to the TWR controller who therefore remained unaware of it.

Description

On 1 December 2013, a Piaggio 180 (C-GFOX) taxiing for departure at Ottawa from the Police Apron there at night in normal ground visibility crossed an active runway ahead of a Bombardier DHC8-300 (C-GEWQ) being operated by Jazz Aviation which was taking off on a scheduled passenger flight from Ottawa to Montréal as JZA 988. Neither of the aircraft flight crews were aware of the runway incursion, and both aircraft continued their respective departures without further event.

Investigation

The occurrence was investigated by the Canadian Transportation Safety Board (TSB). It was determined that although the temperature was sub-zero and light snow had been falling, the prevailing weather conditions were not relevant. The necessary factual data were obtained from ATC recordings.

It was established that the GND controller had cleared the P-180 to taxi from the Royal Canadian Mounted Police (RCMP) Apron behind the terminal to hold short of runway 07 on a route via taxiways G, B and C with a crossing of runway 14/32 explicitly included (see the annotated taxi chart below). This clearance was accompanied by an instruction to contact TWR once at the runway 07 holding point.

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