Air transportation safety investigation A18W0081
The occurrence
On , a Boeing 737-700 aircraft operated by WestJet, was conducting flight WJA113 from Calgary, Alberta, to Vancouver, British Columbia, with 53 passengers and 5 crew members on board. While climbing through 9000 feet after departure, the flight crew received a cargo fire warning. An emergency was declared and a return to Calgary was requested. After landing, the cargo hold was inspected and evidence was found of a fire in passenger baggage.