The Bellanca CH-300 Pacemaker
was attractive to many bush pilots since it had good lift
capacity, could reliably fly great distances, and could stay
aloft for long periods of time.
The Bellanca also had a closed cabin for pilot, freight and
passengers, which was necessary when flying into the northern
bush. Like other closed-cabin aircraft of the period, the
Pacemaker took air into the cabin through a vent, and in winter
the intake air pipe ran along the exhaust from the engine so the
cabin could be heated. This was a very significant improvement
over the open cockpit aircraft.