Bell 407GX Performance & Limits

Question 1

How does Bell define a “run on landing”?

Answer 1

landing with forward ground travel greater than 3 feet with weight on the skids.

Question 2

Max Allowable cabin deck loading?

Answer 2

75 lbs/sq.ft.

Question 3

Max Allowable baggage compartment deck loading?

Answer 3

86 lbs/sq.ft. Max 250lbs

Question 4

Max internal gross weight?

Answer 4

5000 lbs.
5250 lbs with FMS-12

Question 5

VNE - Basic?

Answer 5

140 KIAS up to 3000’ DA
Decreases with altitude per placard.

Question 6

VNE - Takeoff power?

Answer 6

100 KIAS (or placard if less)
TQ between 93.5 and 100.0%

Question 7

VNE - Doors removed?

Answer 7

100 KIAS (or placard if less)

Question 8

VNE - Autorotation?

Answer 8

100 KIAS (or placard if less)

Question 9

Max allowable airspeed for sideward or rearward flight (or crosswind hover)?

Answer 9

35 KIAS

Question 10

Max Operating Altitude?

Answer 10

20,000 DA or PA, whichever is lower

Question 11

Max Rate of Climb?

Answer 11

2000 ft/min

Question 12

Slope Landing Limits?

Answer 12

10° side slopes
10° nose up-slope
5° nose down-slope

Question 13

When shall ENG ANTI ICE be ON

Answer 13

In visible moisture when OAT is below 5°C (40°F)

Question 14

Generator Load Limits?
(180 amp)

Answer 14

0 to 180 Continuous up to 10,000 ft PA
0 to 170 Continuous >= 10,000 ft PA
180-300 2-minute transient
300-400 5 second transient

Question 15

Starter Limits
(External Power)

Answer 15

40s - ON / 30s - OFF
3 attempts
30min - OFF

Note: 28 VDC GPU limited to 500 amps

Question 16

Starter Limits
(Battery Power)

Answer 16

60s - ON/OFF
3 attempts
30min OFF

Question 17

NG - Gas Producer Limits

Answer 17

63 to 105% - Continuous
105.1 to 106.5% - 10sec transient

Question 18

NP - Power Turbine Limits

Answer 18

99 to 100% - Continuous
102.1 to 107.3% - 15 sec transient

68.4 to 87.1% - avoid continuous operation

Question 19

Under what NP conditions will ENGINE OVSPD warning message illuminate?

Answer 19

102.1% for 2.5 sec
-or-
107.3% immediately

Question 20

When operating in MANUAL mode, NP should be maintained at what speed?

Answer 20

95 to 100%

Question 21

MGT Limits?
(flight operations)

Answer 21

100 to 727°C - Continuous
727 to 779°C - Takeoff, 5 minutes
780 to 905°C - Transient, 12 seconds

Question 22

MGT Starting Limits?

Answer 22

Do not exceed:
10 seconds above 843°C
-or-
1 second at 927°C

Question 23

Engine Torque Limits?

Answer 23

0 to 93.5% - Continuous
93.5 to 100% - Takeoff, 5 minutes
105% - Transient, 5 seconds

Question 24

Fuel Pressure Limits?

Answer 24

8 to 25 PSI continuous

Question 25

Engine Oil Pressure Limits?

Answer 25

50 PSI min NG < 79% 90 PSI min NG = 79-94% 115 PSI min NG > 94% 130 PSI max 200 PSI cold starts only

Question 26

Engine Oil Temperature?

Answer 26

0 to 107°C - Continuous

Question 27

What are the Engine Oil Temp considerations when hovering with a tail wind?

Answer 27

Tailwind > 10 kts OAT > 37.8°C (100°F) Monitor temp. Reduce power, nose into wind, or fwd flight to cool down.

Question 28

XMSN Oil Pressure Limits?

Answer 28

30 PSI - min 30-40 PSI - idle ops 40-70 PSI - continuous 70 PSI - max

Question 29

XMSN Oil Temperature Limits

Answer 29

15 to 110°C - continuous

Question 30

Rotor RPM - Power ON

Answer 30

99 to 100% - continuous

Question 31

Rotor RPM - MANUAL mode

Answer 31

95 to 100%

Question 32

Rotor RPM - Power OFF

Answer 32

85 to 107% CAUTION >90% for training

Question 33

Rotor Brake Limits?

Answer 33

NR < 40% Apply as necessary for emergency stops Starts with brake on are prohibited

Question 34

Useable Fuel Capacity (gallons and pounds)

Answer 34

127 gallons 869 lbs

Question 35

Define VH

Answer 35

The airspeed in level flight obtained using min.spec engine TQ corresponding to max continuous power at sea level and 25°C / 77°F VH = 127 KIAS

Question 36

Minimum Battery Voltage for Start

Answer 36

24 volts Starting below 24 may result in hot start

Question 37

For start, how long can throttle be in idle position before starter latching is disabled?

Answer 37

60 seconds. If exceeded, close throttle then return to idle.

Question 38

After a start, under what conditions should you stabilize at idle for 1 minute?`

Answer 38

If engine has been shutdown for more than 15 minutes

Question 39

During start, what are the key call outs/things to watch?

Answer 39

25% NG - Rotors turning 50% NG - START msg extinguished 55% NG - Engine msg extinguished 60% NG - AUTO RELIGHT msg extinguished

Question 40

With generator on, what is the normal voltage?

Answer 40

28 VDC ± 0.5

Question 41

At what total fuel indication is the forward tank full?

Answer 41

770 lbs (appx)

Question 42

At what total fuel indication is fuel transfer complete?

Answer 42

193 lbs (appx)