Limitations

Question 1

Approved doors off configurations

Answer 1

All doors off, both rear doors off, any one door off.

Question 2

V_ne Doors On

Answer 2

156 knots or less

131 knots in autorotation

130 knots with less than 35 lbs of fuel

Question 3

V_ne for any doors off configurations

Answer 3

130 knots for gross weight of 2501 pounds or more

120 knots for 2500 pounds or less

130 knots in autorotation

130 knots with less than 35 lbs of fuel

Question 4

Max altitude

Answer 4

16,000’ DA.

Ant-ice filter reduces this to 14,000’ DA with ground temp of ≥5°C

Question 5

Max Gross Weight

Answer 5

3000 lbs

External: 3550 lbs

Question 6

Minimum Flying Weight

Answer 6

1538 lbs

Question 7

Cargo deck weight limit

Answer 7

1300 lbs

No more than 115 lbs per ft²

Question 8

N2 speed avoidance range

Answer 8

75-88%

Transition through as quickly as possible when spooling up.

Max allowable time in speed avoid range is 1 minute

Question 9

Generator limits

Answer 9

Max continuous 85 amps.

85-150 amps for 10 minutes.

> 150 amps 2 minute limit prior to T/O during battery recharging cycle only.

Question 10

Starter limitations

Answer 10

If ignition is not attained:

1 min on, 1 min off, 1 min on, 23 min off.

Question 11

Minimum N1 speeds for introducing fuel when starting

Answer 11

-18°C and below 12%
-18 to 7°C 13%

7°C and above 15%.

Question 12

Ambient temperature limitation?

Answer 12

Up to 6000’ PA 54°C

From 6000 to 20,000’ PA it varies linearly from 54°C to 27°C

Question 13

C of G limits

Answer 13

99”fwd to 107.4”aft longitudinal

3” left and right lateral

Question 14

Nr Ranges

Answer 14

Power on:

487-492 RPM (102-103%N2)

Power off:

Max 523 RPM (109% N2)

Min 410 RPM (87% N2)

Question 15

N1 Limitations

Answer 15

Min ground idle 64%

MCP 105%

Transient 106% ≤15 sec

Question 16

N2 speed avoid range

Answer 16

Avoid steady state operations between 75% to 88% N2.

Transition through to be accomplished as quickly as possible.

Max allowable time in speed avoid range is 1 minute.

Question 17

TOT Limits

Answer 17

738° Max cont with TQ > 74.3

755° Max cont with TQ ≤ 74.3

810° Max 5 min T/O

843° for 6 seconds during power changes in flight

During Start & Shutdown

150° Max for starting

810°C + for 10 seconds or less with a peak of 927° for no more than 1 second

Question 18

Torque Limits

Answer 18

74.3 Max cont: TOT≥738°
81.3 Max cont: TOT≤ 738°
87.2 Max T/O
87.3 to 93.0 Transient 15 seconds @ 103% N2
93.1 to 97.6 Transient 3 seconds @ 103% N2

Question 19

Engine oil temp limits

Answer 19

0-107°C

Question 20

Engine oil pressure limits

Answer 20

50 to 130 with the following minimums:

≥115 PSI when N1 ≥ 94%

≥90 PSI when N1 ≥ 79%

≥50 PSI when N1 ≤ 79%

Question 21

Battery limits

Answer 21

Flights following 160°F (71°C) and 140°F (60°C) is prohibited until battery inspection

Not on our aircraft….

Question 22

Rotor Brake

Answer 22

205 RPM

Company policy is 100 RPM

Question 23

Max windspeed for hovering downwind with a cyclic trim failure (full forward)?

Answer 23

15 knots

Question 24

Fuel System purging

Answer 24

Further flight prohibited until fuel system is purged following:

Engine flameout caused by fuel exhaustion.

Draining fuel from engine compartment fuel drains (if installed) without the start pump on.

Engine shutdown using emergency fuel shutoff valve.

Motoring the engine without fuel in the fuel tank.

Question 25

Anti-Ice usage

Answer 25

If moisture visible and OAT below 5°C

Question 26

When to abort a start?

Answer 26

If no immediate temp rise on TOT.

No engine oil pressure is observed.

Main rotor not rotating by 25% N1 (20% company policy)

A zero or positive indication on ammeter. (May indicate a failure in starting circuit that may de-energize starter creating conditions for hot start)