Limitations Flashcards
Max Weight
4961 lbs Internal
6172 lbs Extrernal
CG Datum Locations
The datum is located 3.40 m (133.8 in) forward of the main rotor head center line.
Maximum left CG : 0.18 m (7.08 in)
Maximum right CG : 0.14 m (5.51 in)
NOTE
The datum is located in the plane of symmetry of the helicopter.
Vne
Vne Doors On
Power On: 155 kts (-3 kts/1000’ PA)
Power off: 125 kts (-3 kts/1000’ PA)
Note on Placard: Power off Vne is -30 kts of power on Vne
Vne Doors Off
100 kts with one front door off
110 kts evrything else
Opening/Closing a sliding door: 60 kts
Running Landings: 40 kts (excluding emergencies, failures)
Max Altitude
20,000’ PA
Post MOD 07-3368
Temp Limitations
Minimum: -40°C
Maximum temperature: ISA+35°C limited to +50°C
Slope Limitations
Nose up: 10°
Sideways: 8°
Nose down: 6°
Running Landing Limitation
Excluding emergencies and failures, maximum speed for performing running landings: 40 kts
Maneuvering Limitations
Continued operation in servo transparency (where force feedback are felt in the controls) is prohibited.
Maximum load factor is a combination of TAS, DA, gross weight. Avoid such combination at high values associated with high collective pitch.
The transparency may be reached during maneuvers, steep turns, hard pull-up or when maneuvering near VNE. Self-correcting, the phenomenon will induce an un-commanded right cyclic force and an associated down collective reaction. However, even if the transparency feedback forces are fully controllable, immediate action is required to relieve the feed back forces : decrease maneuver’s severity, follow aircraft’s natural reaction, let the collective pitch naturally go down (avoid low pitch) and counteract smoothly the right cyclic motion.
Transparency will disappear as soon as excessive loads are relieved.
In maximum power configuration, decrease collective pitch slightly before initiating a turn, as in this maneuver power requirement is increased.
In hover, avoid rotation faster than 6 seconds for one full rotation.
Flight in falling snow
Flight when visibility is greater than 1500 m (0.81 NM) : ➨ flight in falling snow is authorized.
- Flight when visibility is within 800 to 1500 m (0.43 to 0.81 NM) : ➨ total flying time in falling snow is limited to 10 min.
This time limit includes the time required to leave all snowy conditions, irrespective of the visibility.
- Flight when visibility is lower than 800 m (0.43 NM) : ➨ flight in falling snow is prohibited.
Rotor Brake Limitation
170 Nr
100 Nr Recommended
5 minutes between two consecutive brakings
Nr Power off
320-430
Caution Range:
320-375
405-430
Low rotor warning: 360
High rotor warning: 410
Nr Power On
375-405
First Limitation Instrument (FLI)
- 6: Max Cont
- 6 to 10: T/O rating range
10: Max T/O rating - 4: Max Transient rating (5 seconds)
Torque Limitations
- 7%: Max continuous
- 7 to 100%: T/O rating range for 0 to 40 kts
100%: Max T/O
104%: Max Transient (5 sec)
NOTE
Use of Takeoff rating torque range has no time limit.
100 % torque corresponds to 536 kW at 386 NR rpm.
Nf Limitations
349: Minimum
349-418: Normal operating range
418: Max Cont
450: Max Transient (5 sec)
NOTE
A NR rotor speed of 386 rpm corresponds to a Nf speed of 39158 rpm.
Ng Limitations
Ng 67% min stabilized speed
- 1 Max Cont
- 1 Max T/O
- 3 Max Trans 5 sec
△ Ng Limitations
- 4%: Max Cont
- 4 to 0%: T/O rating range
0%: max T/O Rating
+1%: Max transient (5 sec)
Use of P2 air bleeds is forbidden above the engine maximum continuous rating (Ng or T4).
NOTE
100 % Ng corresponds to 52110 rpm.
T4 Limitations
Starting:
750°C Max Cont
865° Max Transient (10 sec)
Flight:
849° Max Cont
849° to 915° T/O range
915° Max T/O
941° max transient (20 sec)
Oil Temp Limits
-10° to 0° Caution Range
115°C Max temp
Greater than 0° before power application
Engine Oil Pressure Limits
- 1 bar (16 psi): Minimum (Ng ≥ 70%)
- 1 to 2 bar (16 - 29 psi): Caution Low Range
6 to 9.8 bar (87 - 142 psi): Caution High Range
9.8 bar (142 psi): Max
Max Voltage
31.5 Max Voltage
(Rated voltage = 26-29 V)
Max Current
150 Amps Max Cont
180 Amps if optional 200 generator is installed
Baggage Compartment Load Limits
RH cargo: 220 lbs
LH Cargo: 264 lbs
62.5lbs/ft2
Cabin Compartment Load Limits
682 lbs rear cabin floor
330 lbs frwrd left cabin floor
62.5 lbs/ft2
Rear Cargo Compartment Weight Limit
176 lbs
30 lbs/ft2
