Cold Wx Ops

Question 1

Engine and Control Warmup

Answer 1

-17 to -31: allow engines to warm at idle for 3 min, cyclic 1in forward and tail pedals 3/8 of an inch

-31 to -40: allow engines to warm for 3 min, cyclic 5/8 up to 2 inches, and tail pedals 1/8 to 1/2 inch

Consider Rotor Brake Start

Question 2

Extreme Cold Wx Start Oil Px (-40)

Answer 2

May indicate 0 for 20-30 seconds, shut down if not indicating within 1 minute. May spike above 100psi, return to normal within 5 min. Do not advance PCL to fly until oil px is normal

Question 3

TA Battery Charge Time

Answer 3

Above 5: 10 minutes
Below 5: up to 45 minutes

If not to 60% in 1 hour, or 1.5 hours below 5*, TA may not be usable

Question 4

Landings on Snow

Answer 4

Running landing below 15kts is recommended on loose snow

Question 5

Ice Buildup Torques

Answer 5

Up to 14% increase is normal
20% indicates auto No may not be attainable. Exit icing or Land As Soon As Possible