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AS350B3 > Limitations > Flashcards

Limitations Flashcards

1
Q

Max Weight

A

4961 lbs Internal

6172 lbs Extrernal

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2
Q

CG Datum Locations

A

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.

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3
Q

Vne

A

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)

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4
Q

Max Altitude

A

20,000’ PA

Post MOD 07-3368

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5
Q

Temp Limitations

A

Minimum: -40°C

Maximum temperature: ISA+35°C limited to +50°C

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6
Q

Slope Limitations

A

Nose up: 10°

Sideways: 8°

Nose down: 6°

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7
Q

Running Landing Limitation

A

Excluding emergencies and failures, maximum speed for performing running landings: 40 kts

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8
Q

Maneuvering Limitations

A

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.

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9
Q

Flight in falling snow

A

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.
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10
Q

Rotor Brake Limitation

A

170 Nr

100 Nr Recommended

5 minutes between two consecutive brakings

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11
Q

Nr Power off

A

320-430

Caution Range:

320-375

405-430

Low rotor warning: 360

High rotor warning: 410

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12
Q

Nr Power On

A

375-405

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13
Q

First Limitation Instrument (FLI)

A
  1. 6: Max Cont
  2. 6 to 10: T/O rating range
    10: Max T/O rating
  3. 4: Max Transient rating (5 seconds)
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14
Q

Torque Limitations

A
  1. 7%: Max continuous
  2. 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.

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15
Q

Nf Limitations

A

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.

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16
Q

Ng Limitations

A

Ng 67% min stabilized speed

  1. 1 Max Cont
  2. 1 Max T/O
  3. 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.

17
Q

T4 Limitations

A

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)

18
Q

Oil Temp Limits

A

-10° to 0° Caution Range

115°C Max temp

Greater than 0° before power application

19
Q

Engine Oil Pressure Limits

A
  1. 1 bar (16 psi): Minimum (Ng ≥ 70%)
  2. 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

20
Q

Max Voltage

A

31.5 Max Voltage

(Rated voltage = 26-29 V)

21
Q

Max Current

A

150 Amps Max Cont

180 Amps if optional 200 generator is installed

22
Q

Baggage Compartment Load Limits

A

RH cargo: 220 lbs

LH Cargo: 264 lbs

62.5lbs/ft2

23
Q

Cabin Compartment Load Limits

A

682 lbs rear cabin floor

330 lbs frwrd left cabin floor

62.5 lbs/ft2

24
Q

Rear Cargo Compartment Weight Limit

A

176 lbs

30 lbs/ft2

AS350B3 (4 decks)

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