QK8930 - Incident: Jazz CRJ9 at Thunder Bay on Jan 11th 2022

A Jazz Canadair CRJ-705, registration C-FDJZ performing flight QK-8930 from Thunder Bay,ON to Toronto,ON (Canada) with 29 passengers and 4 crew, was climbing out of Thunder Bay when the crew received a lavatory smoke indication, cabin crew detected the smell of burning plastics with no smoke visible. The aircraft returned to Thunder Bay for a safe landing about 25 minutes after departure.

The Canadian TBS reported maintenance determined the right hand pack had suffered an internal failure that produce smoke and vapor substantial enough to trigger the lavatory smoke detector. The pack was deferred, a test flight conducted and the aircraft ferried to the operator's maintenance base at Toronto. The right hand pack was replaced.

The aircraft returned to service on Jan 13th 2022.