Created Thursday, Oct 28th 2021 19:53Z, last updated Friday, Nov 5th 2021 11:34Z
A Cargojet Airways Boeing 767-300, registration C-GUAJ performing flight
W8-555 from Edmonton,AB to Vancouver,BC (Canada) with 2 crew, was descending towards Vancouver when the crew received a "MAIN CARGO FIRE" indication, fire warnings and the fire bell. When the crew cancelled the Master Warning all other warnings ceased as well. The crew advised ATC of a cargo fire warning, the warning had extinguished and requested priority as well as emergency services on stand by. The aircraft continued for a safe landing in Vancouver, emergency services did not detect any trace of fire or smoke. The aircraft subsequently taxied to the apron with the fire services in trail.
The Canadian TSB reported there appeared some history to the fault and troubleshooting was ongoing. Maintenance discovered a short circuit in the wiring between loop 1 main and loop 2 main alarm.
On Nov 5th 2021 the TSB added: "Maintenance was carried out on multiple defects. Replacement of the Main Cargo Fire/Overheat Logic Card M02026 was completed. The card was replaced and system function checked serviceable. Airplane will be placed on Non ETOPS list as a precaution."
