Once the aircraft had been repaired, CF-CZZ re-entered service with Canadian Pacific early in 1964. By that stage, CPAL had disposed of most of its DC-6 fleet, but still had two on strength (CF-CZT & CF-CZU), and with the return to service of CF-CZZ the fleet was boosted to three aircraft.
They were used on scheduled runs linking Vancouver with the more important towns in British Columbia and Alberta, including a daily Vancouver-Prince Rupert-Sandspit (on Queen Charlotte Island) and return service.
One "ropey" incident was recorded by CF-CZZ on this service, on January 15 1965. After take-off from Prince Rupert, all four engines lost power and back-fired to such an extent that ditching appeared to be imminent. There was no time to dump fuel, but the pilot was able to land back at Prince Rupert after a nail-biting eight minute long flight. The cause was found to be wing defrosting fluid which had accidently been added to each anti-detonation tank at Prince Rupert prior to the flight.
After all had recovered from this traumatic incident, CF-CZZ resumed flying its routine passenger schedules. However, by May 1968 its service with CPAL was at an end, and it was put into storage at Edmonton, awaiting its next career move.