Limitations Flashcards Preview

AS350B2 > Limitations > Flashcards

Flashcards in Limitations Deck (16):
1

Max Gross Weight

4961 lbs

2

Vne

Doors Closed VNE power-on:

• Absolute VNE is 155 kt at zero pressure altitude

• At higher altitudes, reduce by 3 kt per 1,000 ft

VNE values vs. altitudes are on the airspeed indicator

• In cold weather, subtract the following from VNE

When OAT below –30°C: 10 kt

VNE power-off:

• Absolute VNE is 125 kt at zero pressure altitude

• At higher altitudes, reduce by 3 kt per 1,000 ft

• In cold weather, reduce VNE as follows:

20 kt when OAT below –20°C without dropping below 65 kt

3

VNE with Doors Removed

• 4 doors installed and closed—VNE

• Front doors installed and closed with one rear door installed and closed with the other open and latched or removed—VNE

• Front doors installed and closed, rear doors open and latched or removed—110 kts or VNE (whichever is less)

• Any combination involving front door(s) removed—110 kts or VNE (whichever is less)

4

Max substantiated pressure altitude

20,000'

5

Max temperature

ISA+35°C limited to +50°C

6

Maneuvering Limitations

Continued operation in servo-transparency (where force feedback are felt in the controls) is prohibited.

7

Flight in Falling Snow

If visibility greater than 0.81 nm:

Flight in falling snow authorized

If visibility 0.43 to 0.81 nm:

Total flying time in falling snow limited to 10 minutes (includes time required to leave all snowy conditions) regardless of the visibility.

If visibility less than 0.43 nm:

Flight in falling snow prohibited

8

MR Nr

Power On

On ground at low pitch = 380 ±5 rpm

In stabilized flight = 390 +4/–5 rpm

Power Off

Maximum = 430 rpm

Minimum = 320 rpm

9

Rotor RPM horn

Continuous below 360 rpm down to 250 Nr

Intermittent above 410 rpm

10

ROTOR BRAKE LIMITATION

170 rpm (Company 100 RPM)

Minimum 5 minutes between two consecutive brakings

11

TORQUE LIMITATIONS

When airspeed lower than 40 kt:

Maximum transient torque (10 seconds) = 107% Maximum continuous torque = 100%

When airspeed equal to or higher than 40 kt: Maximum continuous torque = 94%

To keep from servo transparency...less maneuvering load at lower speeds

12

Ng

Gas Generator Speed

100% Ng corresponds to 51,800 rpm.

Maximum transient rating (less than 5 seconds)

• Ng = 107.5% - ∆Ng = +6

Maximum takeoff rating (5 minutes)

• without P2 air bleed = ∆Ng = 0

• with P2 air bleed = ∆Ng = –0.6

Maximum continuous rating

• Ng = 98% - ∆Ng = –3.5

13

T4

Maximum for engine starting = 795°C

Maximum transient during starting (5 seconds max) = 865°C

Maximum for takeoff = 845°C

Maximum continuous = 795°C

14

Nf

Maximum continuous Nr equivalent = 417 rpm

Transient limits (5 seconds max)

• Minimum = 330rpm

• Maximum = 463 rpm

Note: A rotor speed of 394 rpm corresponds to a free turbine speed of 42,452 rpm.

15

Normal Voltage`

26-29 Volts

16

Minimum starting voltage

15V