Incident
at MONTRÉAL / ST-HUBERT QC (CYHU)
Air traffic control (ATC) experienced a loss of communication with a Provincial Airlines Beech 1900D (PVL3032) from Montréal/Saint-Hubert, QC (CYHU) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL) that was taking off from Montréal/Saint-Hubert, QC (CYHU) and climbing to 4,000 ft. Several aircraft had to abort their approach for Runway 24L. The following aircraft were delayed: a Chrono Aviation Beech 1900D (NDL901) from Québec/Jean-Lesage, QC (CYQB) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL); an I.M.P. Group Limited Bombardier BD-700-1A10 (C-GIIT); an Air Inuit de Havilland DHC-8-301 (AIE803) from Kuujjuarapik, QC (CYGW) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL); an Air Canada Airbus A330-300 (ACA306) from Vancouver, BC (CYVR) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL); an Air Inuit de Havilland DHC-8-401 (AIE833) from Québec/Jean-Lesage, QC (CYQB) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL); a Boeing 737 MAX 8 (WJA272) from Toronto/Lester B. Pearson, ON (CYYZ) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL); a de Havilland DHC-8-402 (POE488) from Halifax/Stanfield, NS (CYHZ) to Montréal/Pierre-Elliott-Trudeau, QC (CYUL); and an American, corporately registered Embraer EMB-545 (N158NS).