Engines system description

Question 1

Exhaust System Type

Answer 1

Crossover, with gases directed outboard of the nacelles into muffler-heaters for reduced noise, heated cabin air and defrost.

Question 2

Oil cooling

Answer 2

Provided by oil coolers fed with air from scoops on the cowls

Question 3

Induction and alternate air

Answer 3

Primary induction is provided by outboard air scoops on the cowl. Alternate air is unfiltered and heated by the crossover exhaust tube and provides protection against icing. Alternate should NOT be used for takeoff.

Alternate air should cause a drop in RPM during engine runup.

Question 4

Cranking

Answer 4

Continuously up to 30 seconds on the first start attempt.
Must cool for “several” minutes between each attempt.

Question 5

Engine action hesitation

Answer 5

Before a runup on a cold day, advance throttles slowly and check for any sagging, sputtering, or slow acceleration.