Limitations

Question 1

Max internal GW for takeoff or landing

Answer 1

5000 pounds
(Minimum 2650)

Question 2

Airspeed

Answer 2

140kts sea level to 3000’
(Primary airspeed indicator displays actual VNE for current conditions of temp and altitude)

Question 3

Minimum speeds for coupled flight director modes:

Answer 3

SDP/GA 40 KIAS
HDG/NAV 40 KIAS
APR(VOR/Localizer capture and track) 65 KIAS
ALT/ALTS/VS 65 KIAS

(VNE is 100 KIAS or placarded VNE, whichever is less, at 93.5 to 100% torque (takeoff power).
(VNE IS 100 KIAS or placarded VNE, whichever is less, when takeoff loading is in shaded area of the gross weight lateral center of gravity limits).

Question 4

Doors removed VNE

Answer 4

100 KIAS or placarded whichever is less
(Any doors removed)

Question 5

VNE Autorotation

Answer 5

100 KIAS or placarded VNE, whichever is less

Question 6

Max airspeed for sideward and rearward flight or crosswind hover

Answer 6

35 KTAS

Question 7

Max operating altitude

Answer 7

20,000’ Hd or 20,000 Hp, whichever is lower

Question 8

Prohibited maneuvers

Answer 8

Aerobatic flight maneuvers prohibited

Question 9

Climb and descent

Answer 9

Max rate of climb 2000’ per minute
(Autopilot in ATT: max rate of climb 1500’ per minute)

Question 10

Slope landings

Answer 10

10° side slopes
10° nose up slope
5° nose down slope

Question 11

Autopilot operation

Answer 11

Pilots hands must be on cyclic grip under the following conditions:
- Durning AP engagement or intentional disengagement
- At indicated airspeed less than 45 KIAS
- At heights less than 200’ AGL
(Coupled ILS approaches are prohibited unless radar altimeter is installed and functional)

Question 12

Ambient Temperatures

Answer 12

Max sea level temp 51.7°C(125°F) decreases with Hp at standard lapse rate of 2°C(3.6°F) per 1000’

(Refer to temp limits chart figure 1-4)

Minimum air temp for ops at all altitudes. -40°C (-40°F)

ENG ANTI ICE shall be on in visible moisture when OAT is below 5°C (40°F)

Question 13

Generator (206-062-200-113) installed

Answer 13

Up to 10000’ Hp:
Continuous ops 0 to 180 amps
Max continuous 180 amps

Above 1000’ Hp:
Continuous ops 0 to 170 amps
Max continuous 170 amps

Transient, 2 minutes 180 to 300 amps
Transient, 5 seconds 300 to 400 amps

Question 14

Generator (206-062-200-123 or 141) installed

Answer 14

Up to 10000’ Hp
Continuous ops 0 to 200 amps
Max continuous 200 amps

Above 10000’
Continuous ops 0 to 180 amps
Max continuous 180 amps

Transient, 2 minutes 200 to 300 amps
Transient, 5 seconds 300 to 400 amps

Question 15

Starter

Answer 15

28 VDC GPU for starting shall be limited to 500 amps
External Power Start Battery Start
40 seconds on 60 seconds on
30 seconds off 60 seconds off
40 seconds on 60 seconds on
30 seconds off 60 seconds off
40 seconds on 60 seconds on
30 minutes off 30 minutes off

Question 16

Power Plant

Answer 16

Rolls-Royce model 250-C47B or 250-C47B/8

Question 17

Gas Producer RPM (Ng)

Answer 17

Ng limits adjusted for OAT and pressure altitude are pr Semtex on PSI.

Continuous ops 63 to 105%
Max continuous 105%
Transient, 10 seconds 105.1 to 106.5%

Question 18

Power Turbine RPM (Np)

Answer 18

Avoid continuous ops 68.4 to 87.1%
Minimum 99%
Continuous ops 99 to 100%
Maximum continuous 100%
Maximum transient, 15 seconds 102.1 to 107.3%

(Engine OVSPD warning message will illuminate when Np is greater that 102.1% for 2.5 seconds or 107.3% immediately).

(When operating in MANUAL mode, Np should be maintained between 95 and 100%).

Question 19

Measured Gas Temperature (MGT)

Answer 19

Continuous ops 100 to 727°C

Maximum continuous 727°C

Takeoff, 5 minutes 727 to 779°C

Maximum for takeoff 779°C

Transient, 12 seconds 780 to 905°C

Maximum starting, do not exceed 10 seconds above 843°C or 1 second at 927°C

Question 20

Engine Torque

Answer 20

Continuous ops 0 to 93.5%

Maximum continuous 93.5%

Takeoff, 5 minute 93.5 to 100%
Transient, 5 seconds 105%

(Use of takeoff power is limited to 100 KIAS, not to exceed placarded VNE).

Question 21

Fuel pressure

Answer 21

Minimum 8 PSI

Continuous ops 8 to 25 PSI

Maximum 25 PSI

Question 22

Engine oil pressure

Answer 22

Minimum below 79% Ng - 50 PSI

Minimum from 79 to 94% Ng - 90 PSI

Minimum above 94% - 115 PSI

Maximum 130 PSI

Maximum cold starts only 200 PSI

(When 130 PSI is exceeded during start, operate at idle until oil pressure drops below 130 PSI).

Question 23

ENGINE OIL TEMPERATURE

Answer 23

Continuous ops 0 to 107°C

Maximum 107°C

(If hovering with a tailwind greater than 10 knots at OAT above 37.8°C (100°F), closely monitor engine oil temperature. The oil temperature may be reduced by either turning into wind, reducing power, or transition to forward flight).

Question 24

Transmission Oil Pressure

Answer 24

Minimum 30 PSI

Idle operation only 30 to 40 PSI

Continuous ops 40 to 70 PSI

Maximum 70 PSI

Question 25

Transmission Oil Temperature

Answer 25

Continuous operation 15 to 110°C

Maximum 110°C

Question 26

Rotor Rpm - Power on

Answer 26

Continuous ops 99 to 100%

Maximum continuous 100%

(When operating in MANUAL mode, No should be maintained between 95% and 100%).

Question 27

Rotor RPM - Power Off

Answer 27

Minimum 85%

Continuous ops 85 to 107%

Maximum 107%

(For autorotative training, maintain steady state No above 90%).

Question 28

Fuel temp limits

Answer 28

-32°C (25°F)

Jet A

For ops below 32°C (-25°F) check rolls Royce ops manual for cold weather fuel blending.

Question 29

Rotor Brake

Answer 29

Rotor brake application is limited to ground operation after engine has been shut down and Nr has decreased to 40% or lower.

For emergency stops, apply rotor break any time after engine is shut down.

Engine starts with rotor break engaged are prohibited.