Engine Run Limits

Question 0

Oil pressure of 250 PSIG is allowed

Answer 0

until oil temperature is above 45C

Question 1

Ng RPM varies to

Answer 1

maintain minimum Np RPM

Question 2

Power limited to ground idle when oil temperature is below 0C

Answer 2

and is limited to 1000 HP when oil temperature is 0 to 45C

Question 3

Avoid stabilized operations between 52 to 68 and

Answer 3

75 to 85 percent ranges Np RPM, which are the turbine shaft and propeller critical speed ranges.

Question 4

With oil temperature in normal range, if sustained oil pressure is

Answer 4

equal to or exceeds 90.0 PSI, perform engine shutdown. Engine maintenance is required.

Question 5

When oil temperature is in the normal range, unlimited engine operation is permitted up to when power section oil pressure exceeds

Answer 5

90.0 PSI for 30 seconds or more. Power section oil pressure maintenance trending will be performed when oil pressure exceeds 80.0 PSI

Question 6

Max continuous HP is 4,691 (+/-74) (ambient temp 83F (28C) of less with no bleed air demand)

Answer 6

HP readout must line up with tick mark on indicator for maximum continuous HP

Question 7

Max takeoff HP is 4,691 (+/-74) (ambient temperature 103F (39C) or less with no bleed air demand.)

Answer 7

HP readout must be the same as or greater than maximum continuous HP reading.