LIMITATIONS Flashcards
FLIGHT CREW
Minimum flight crew consists of one pilot who
shall operate helicopter from right crew seat.
Left crew seat may be used for an additional
pilot when approved dual controls are
installed.
WEIGHT
Maximum approved internal GW for takeoff and landing is
5000 pounds (2268 kg).
WEIGHT
Minimum GW for flight is
2650 pounds (1202 kg).
WEIGHT
Minimum weight at fuselage station 65.0 is
170 pounds (77.1 kg).
WEIGHT
Maximum approved GW for flight with jettisonable external load is
6000 pounds (2722 kg).
WEIGHT
CAUTION
LOADS THAT RESULT IN GW ABOVE 5000 POUNDS (2268 KG) SHALL BE CARRIED ON THE CARGO HOOK AND MUST BE
JETTISONABLE.
AIRSPEED
Basic VNE is
140 KIAS, sea level to 3000 feet HD. Decrease VNE for ambient conditions in accordance with AIRSPEED LIMITATIONS Placards and Decals (Figure 1-3).
AIRSPEED
VNE at 93.5 to 100% TORQUE (takeoff power) is
100 KIAS, not to exceed placarded VNE.
AIRSPEED
When takeoff loading is in shaded area of the Gross Weight Lateral Center of Gravity Limits (Figure 1-2).
VNE is 100 KIAS or placarded VNE, whichever is less
AIRSPEED
With any door(s) removed
VNE is 100 KIAS not to exceed placarded VNE.
AIRSPEED
For steady state autorotation.
VNE is 100 KIAS or placarded VNE, whichever is less
AIRSPEED
Maximum allowable airspeed for sideward and rearward flight or crosswind hover is
35 KTAS.
ALTITUDE
Maximum operating altitude is
20,000 feet HD or 20,000 feet HP, whichever is lower.
PROHIBITED MANEUVERS
Aerobatic maneuvers are prohibited.
CLIMB AND DESCENT
Maximum rate of climb is 2000 feet per minute.
SLOPE LANDING
CAUTION
SLOPE LANDINGS HAVE BEEN DEMONSTRATED TO THE SLOPE LANDING LIMITS. OTHER CONDITIONS INCLUDING, BUT NOT LIMITED TO, WIND DIRECTION AND VELOCITY, CENTER OF GRAVITY, AND THE CONDITION OF THE SLOPE (LOOSE ROCK, SOFT MUD, SNOW, WET GRASS, ETC.) MAY LIMIT MAXIMUM SLOPE TO A VALUE LESS THAN THE PUBLISHED LIMITS.
SLOPE LANDING
Slope landings are limited to
10° side slopes
10° nose up slope
5° nose down slope.
AMBIENT TEMPERATURES
Maximum sea level ambient air temperature for operation is
51.7°C (125°F) and decreases with HP at standard lapse rate of 2°C (3.6°F) per 1000 feet. Refer to Ambient Air Temperature Limitations chart (Figure 1-4).
AMBIENT TEMPERATURES
Minimum ambient air temperature for operation at all altitudes is
-40°C (-40°F)
AMBIENT TEMPERATURES
ENG ANTI ICE
Shall be ON in visible moisture when OAT is below 5°C (40°F).
GENERATOR
Up to 10,000 feet Hp
Continuous operation
0 to 180 amps
Maximum continuous
180 amps
GENERATOR
Above to 10,000 feet Hp
Continuous operation
0 to 170 amps
Maximum continuous
170 amps
GENERATOR
Transient
Transient, 2 minutes
180 to 300 amps
Transient, 5 seconds 300 to 400 amps
STARTER
External Power Start
40 seconds ON 30 seconds OFF 40 seconds ON 30 seconds OFF 40 seconds ON 30 minutes OFF
STARTER
Battery Start
60 seconds ON 60 seconds OFF 60 seconds ON 60 seconds OFF 60 seconds ON 30 minutes OFF
STARTER
NOTE
28 VDC GPU for starting shall be limited to 500 amps.
POWER PLANT
NOTE
Intentional use of any power transient is prohibited.
GAS PRODUCER RPM (NG)
NOTE
FADEC will limit NG in accordance with GAS PRODUCER RPM (NG) LIMIT placard. NR decay will result if power demand exceeds placard limit.
GAS PRODUCER RPM (NG)
Continuous operation 63 to 105% Maximum continuous operation 105% Transient, 10 seconds 105.1 to 106%
POWER TURBINE RPM (NP)
NOTE Engine Overspeed
ENGINE OVSPD warning light will illuminate when NP versus TORQUE is between 102.1% NP at 100% TORQUE and 108.6% NP at 0% TORQUE.
POWER TURBINE RPM (NP)
NOTE MANUAL mode
When operating in MANUAL mode NP should be maintained between 95 and 100%.
MEASURED GAS TEMPERATURE (MGT)
GAUGE P/N 407-375-001-101/-103
Continuous operation 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 826°C Maximum starting, do not exceed 10 seconds above 826°C or 1 second at 927°C.
MEASURED GAS TEMPERATURE (MGT)
GAUGE P/N 407-375-001-105 AND SUB
Continuous operation 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 operation 0 to 93.5% Maximum continuous 93.5% Takeoff, 5 minute 93.5 to 100% Transient, 5 seconds 105%
ENGINE TORQUE
NOTE
Use of takeoff power is limited to 100 KIAS, not to exceed placarded VNE.
FUEL PRESSURE
Minimum 8 PSI Continuous operation 8 to 25 PSI Maximum 25 PSI
ENGINE OIL PRESSURE
50 PSI Minimum 50 to 90 PSI Operation below 79% NG RPM 90 to 115 PSI Continuous operation below 94% NG RPM 115 to 130 PSI Continuous operation 130 PSI Maximum for continuous operation 200 PSI Maximum for cold start
ENGINE OIL PRESSURE
NOTE
When 130 PSI is exceeded during start, operate engine at idle until oil pressure drops below 130 PSI.
ENGINE OIL TEMPERATURE
Continuous operation
0 to 107°C
Maximum
107°C
ENGINE OIL TEMPERATURE
NOTE hovering with a tailwind
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.
ENGINE OIL TEMPERATURE
NOTE Positive temperature indication
Positive temperature indication is when the second segment of the trend arc is illuminated.
TRANSMISSION OIL PRESSURE
Minimum 30 PSI Continuous operation 40 to 70 PSI Maximum 70 PSI
TRANSMISSION OIL TEMPERATURE
Continuous operation
15 to 110°C
Maximum
110°C
ROTOR RPM — POWER ON
Continuous operation
99 to 100%
Maximum continuous
100%
ROTOR RPM — POWER ON
NOTE
When operating in MANUAL mode NR should be maintained between 95% and 100%.
ROTOR RPM — POWER OFF
Minimum 85% Continuous operation 85 to 107% Maximum 107%
ROTOR RPM — POWER OFF
CAUTION
FOR AUTOROTATIVE TRAINING, MAINTAIN STEADY STATE NR ABOVE 90%.
HYDRAULIC
Hydraulic fluid
Hydraulic fluid MIL-PRF-5606 (NATO H-515) may be used at all ambient temperatures.
FUEL
Fuel conforming to following specifications may be used at all ambient temperatures:
ASTM-D-6615, Jet B
MIL-DTL-5624, Grade JP-4 (NATO F-40)
FUEL
Fuels conforming to following specifications are limited to ambient temperatures of -32°C (-25°F) and above:
ASTM-D-1655, Jet A or A-1
MIL-DTL-5624, Grade JP-5 (NATO F-44)
MIL-DTL-83133, Grade JP-8 (NATO F-34)
OIL — ENGINE
NOTE
Refer to Rolls-Royce Operation and Maintenance Manual and BHT-407-MD-1 manual for approved oils and mixing of oils of different brands, types, and manufacturers.
OIL — ENGINE
Temperatures above -40°C (-40°F).
Oil conforming to MIL-PRF-7808 (NATO O-148), DOD-PRF-85734 or MIL-PRF-23699 (NATO O-156) is limited to ambient temperatures above -40°C (-40°F).
OIL — TRANSMISSION AND TAIL ROTOR GEARBOX
NOTE
It is recommended DOD-PRF-85734 oil be used in transmission and tail rotor gearbox to maximum extent allowed by temperature limitations.
OIL — TRANSMISSION AND TAIL ROTOR GEARBOX
Temperatures above -40°C (-40°F).
Oil conforming to DOD-PRF-85734 is limited to ambient temperatures above -40°C (-40°F).
OIL — TRANSMISSION AND TAIL ROTOR GEARBOX
Temperatures below -18°C (0°F).
Oil conforming to MIL-PRF-7808 (NATO O-148) is limited to ambient temperatures below -18°C (0°F).
ROTOR BRAKE
Rotor brake (if installed) 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 brake any time after engine is shut down. Engine starts with rotor brake engaged are prohibited.
