Limitations Flashcards
Max internal GW for takeoff or landing
5000 pounds
(Minimum 2650)
Airspeed
140kts sea level to 3000’
(Primary airspeed indicator displays actual VNE for current conditions of temp and altitude)
Minimum speeds for coupled flight director modes:
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).
Doors removed VNE
100 KIAS or placarded whichever is less
(Any doors removed)
VNE Autorotation
100 KIAS or placarded VNE, whichever is less
Max airspeed for sideward and rearward flight or crosswind hover
35 KTAS
Max operating altitude
20,000’ Hd or 20,000 Hp, whichever is lower
Prohibited maneuvers
Aerobatic flight maneuvers prohibited
Climb and descent
Max rate of climb 2000’ per minute
(Autopilot in ATT: max rate of climb 1500’ per minute)
Slope landings
10° side slopes
10° nose up slope
5° nose down slope
Autopilot operation
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)
Ambient Temperatures
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)
Generator (206-062-200-113) installed
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
Generator (206-062-200-123 or 141) installed
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
Starter
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
Power Plant
Rolls-Royce model 250-C47B or 250-C47B/8
Gas Producer RPM (Ng)
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%
Power Turbine RPM (Np)
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%).
Measured Gas Temperature (MGT)
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
Engine Torque
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).
Fuel pressure
Minimum 8 PSI
Continuous ops 8 to 25 PSI
Maximum 25 PSI
Engine oil pressure
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).
ENGINE OIL TEMPERATURE
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).
Transmission Oil Pressure
Minimum 30 PSI
Idle operation only 30 to 40 PSI
Continuous ops 40 to 70 PSI
Maximum 70 PSI
Transmission Oil Temperature
Continuous operation 15 to 110°C
Maximum 110°C
Rotor Rpm - Power on
Continuous ops 99 to 100%
Maximum continuous 100%
(When operating in MANUAL mode, No should be maintained between 95% and 100%).
Rotor RPM - Power Off
Minimum 85%
Continuous ops 85 to 107%
Maximum 107%
(For autorotative training, maintain steady state No above 90%).
Fuel temp limits
-32°C (25°F)
Jet A
For ops below 32°C (-25°F) check rolls Royce ops manual for cold weather fuel blending.
Rotor Brake
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.
