Limits

Question 1

Nf

Answer 1

Power on: 97-100%
Overspeeds are determined on a sliding scale depending on TOT, Nf percentage, and duration

Avoid Range: 71-88% with engine torque greater than 33%. (Steady state is defined as holding Nf within 2% range for 60 cumulative seconds.)

Question 2

Ng

Answer 2

Idle Ng is 62 +- 2%

Normal operating range 59-105%
Max 106% for 15 seconds

Question 3

Engine oil pressure

Answer 3

50 min with Ng below 79%
90 min with Ng between 79-94%
115 min with Ng above 94%

Max pressure is 130 except for temporary conditions up to 150psi immediately following a cold wx start

Question 4

Engine oil temperature

Answer 4

0-107 C

Question 5

TOT

Answer 5

During start
0-810 - no limit
810-927 - 10 seconds max
927 - maximum

Power transient
0-738 - no limit
738-810 - 5 minutes
810-843 - 6 seconds
843 - maximum

Question 6

XMSN oil pressure

Answer 6

30-50 PSI - normal operating range

30 min, 70 max

Question 7

XMSN oil temperature

Answer 7

15-110 normal

110 max

Question 8

Loadmeter

Answer 8

70%

Question 9

Fuel pressure

Answer 9

4-30psi

Question 10

Airspeed

Answer 10

130 Knots

Question 11

Torque

Answer 11

0-85% - continuous
85-100% - 5 minutes
100-110%- 5 seconds

Question 12

Starter limits

Answer 12

External power
25 on / 30 seconds off
25 on / 30 seconds off
25 on / 30 minutes off

Battery
40 on / 60 seconds off
40 on / 60 seconds off
40 on / 30 minutes off

Question 13

Max rate of climb

Answer 13

50 KIAS

Question 14

Min IFR speed

Answer 14

65 KIAS

Question 15

Max airspeed with any doors off

Answer 15

110 KIAS

Question 16

Max autorotational airspeed

Answer 16

100 KIAS

Question 17

Turbulence penetration airspeed

Answer 17

80 KIAS

Question 18

Prohibited operations

Answer 18

[B] IFR or icing

Question 19

Prohibited maneuvers

Answer 19

• Aerobatic maneuvers
• Protracted operations in the avoid and caution ranges of H/V diagram
• fully developed vortex ring state
• intentional entry into blade stall
• hovering turns exceeding 45 deg/sec

Question 20

Required equipment for over water and shipboard ops

Answer 20

RADALT

VSI

Question 21

Required equipment for IMC flight

Answer 21

Main gen
Attitude indicators (x2)
Gen (STBY)
IVSI
Cyclic force trim
Mini stab FCS
Battery protection circuit
RADALT
Nav system
Comm system
Other equip req by operating rules