Engine limitations

Question 1

Minimum battery voltage for engine start?

Answer 1

24V

Question 2

Start procedure for more than three start attempts?

Answer 2

Start attempt 1:
Starter on.. 30 secs
Cooling Down.. 1 min

Start attempt 2:
Starter on.. 30 secs
Cooling down.. 1 min

Start attempt 3:
Starter on.. 30 secs
Cooling down.. 30 mins

Question 3

Max transient TRQ… (10 sec)

Answer 3

115%

Question 4

Max T/O power TRQ… (5 min at T/O) (cumulative per sortie)

Answer 4

111%

Question 5

Max continuous TRQ

Answer 5

92%

Question 6

Max engine starts TOT… (ten sec over 810° C)

Answer 6

927°C

Question 7

Max transient TOT… (6 sec over 810°C)

Answer 7

899°C

Question 8

Max T/O power TOT… (5 min at T/O) (cumulative per sortie)

Answer 8

810°C

Question 9

Max Continuous TOT

Answer 9

752°C

Question 10

prop transient limit (15 sec max above 2132 N2)

Answer 10

2233 N2

Question 11

Max continuous speed

Answer 11

2132 N2

Question 12

Max static ground ops with crosswind component >10kts. This is relevant to the propeller overspeed governor check.

Answer 12

1850 N2

Question 13

Speed avoidance range

Answer 13

1523-1786 N2

Question 14

N2 must not be allowed to …….

Answer 14

Stabilise within the speed avoidance range.

Question 15

Operation within the speed of avoidance range is only permitted when?

Answer 15

Pre-flight, post flight checks and Taxi

Question 16

Max transient N1 (max 15 sec >105% N1)

Answer 16

106% N1

Question 17

Max Continous N1

Answer 17

105% N1

Question 18

Oil Pressure - Max transient (cold weather/engine start)

Answer 18

150 psi (BETA RANGE)

Question 19

Oil pressure - Max

Answer 19

130 psi (BETA RANGE)

Question 20

Oil pressure - Min at N1… > 94%

Answer 20

120 psi - 105 psi

Question 21

Oil pressure - Min at N1… 85% to 94%

Answer 21

90 psi - 75 psi

Question 22

Oil pressure - Min at N1… <85%

Answer 22

50 psi - 35 psi

Question 23

Oil pressure - What is the lapse rate for min permitted oil PSI for each 1000 feet above 5000 feet?

Answer 23

Linearly 2 psi

Question 24

Oil Temperature - max limit at TRQ… <40%

Answer 24

107°C

Question 25

Oil Temperature - Max transient at TRQ… > 40% (5 min)

Answer 25

107°C

Question 26

Oil Temperature - max continuous at TRQ >40%

Answer 26

82°C

Question 27

Oil Temperature - Min Temp

Answer 27

0°C

Question 28

Min Before Starting

Answer 28

-40°C