Bell 407GX Performance & Limits

Question 1

B407 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

B407 Max Allowable cabin deck loading?

Answer 2

75 lbs/sq.in.

Question 3

B407 Max Allowable baggage compartment deck loading?

Answer 3

86 lbs/sq.in.

Question 4

B407 Max Allowable weight in aft cargo compartment?

Answer 4

250 lbs

Question 5

B407 Max internal gross weight?

Answer 5

5000 lbs.

5250 lbs with STC

Question 6

B407 VNE - Basic?

Answer 6

140 KIAS up to 3000’ DA

Decreases with altitude per placard.

Question 7

B407 VNE - Takeoff power?

Answer 7

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

Question 8

B407 VNE - Doors removed?

Answer 8

100 KIAS (or placard if less)

Question 9

B407 VNE - Autorotation?

Answer 9

100 KIAS (or placard if less)

Question 10

B407 Max allowable airspeed for sideward or rearward flight (or crosswind hover)?

Answer 10

35 KIAS

Question 11

B407 Max Operating Altitude?

Answer 11

20,000 DA or PA, whichever is lower

Question 12

B407 Max Rate of Climb?

Answer 12

2000 ft/min

Question 13

B407 Slope Landing Limits?

Answer 13

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

Question 14

B407 When shall ENG ANTI ICE be ON

Answer 14

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

Question 15

B407 Generator Load Limits?

180 amp

Answer 15

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 16

B407 Generator Load Limits?

200 amp

Answer 16

0 to 200 Continuous up to 10,000 ft PA
0 to 180 Continuous >= 10,000 ft PA
200-300 2-minute transient
300-400 5 second transient

Question 17

B407 Starter Limits

External Power

Answer 17

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

Note: 28 VDC GPU limited to 500 amps

Question 18

B407 Starter Limits

Battery Power

Answer 18

60s - ON/OFF
3 attempts
30min OFF

Question 19

B407 NG - Gas Producer Limits

Answer 19

63 to 105% - Continuous

105.1 to 106.5% - 10sec transient

Question 20

B407 NP - Power Turbine Limits

Answer 20

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

68.4 to 87.1% - avoid continuous operation

Question 21

B407
Under what NP conditions will ENGINE OVSPD warning message illuminate?

Answer 21

102. 1% for 2.5 sec
     - or-
103. 3% immediately

Question 22

B407
When operating in MANUAL mode, NP should be maintained at what speed?

Answer 22

95 to 100%

Question 23

B407 MGT Limits?

flight operations

Answer 23

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

Question 24

B407 MGT Starting Limits?

Answer 24

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

Question 25

B407 Engine Torque Limits?

Answer 25

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

Question 26

B407 Fuel Pressure Limits?

Answer 26

8 to 25 PSI continuous

Question 27

B407 Engine Oil Pressure Limits?

Answer 27

``` 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 28

B407 Engine Oil Temperature?

Answer 28

0 to 107°C - Continuous

Question 29

B407 What are the Engine Oil Temp considerations when hovering with a tail wind?

Answer 29

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

Question 30

B407 XMSN Oil Pressure Limits?

Answer 30

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

Question 31

B407 XMSN Oil Temperature Limits

Answer 31

15 to 110°C - continuous

Question 32

B407 Rotor RPM - Power ON

Answer 32

99 to 100% - continuous

Question 33

B407 Rotor RPM - MANUAL mode

Answer 33

95 to 100%

Question 34

B407 Rotor RPM - Power OFF

Answer 34

85 to 107% | CAUTION >90% for training

Question 35

B407 Rotor Brake Limits?

Answer 35

NR < 40% Apply as necessary for emergency stops Starts with break prohibited

Question 36

B407 Useable Fuel Capacity (gallons and pounds)

Answer 36

127 gallons | 869 lbs

Question 37

B407 Define VH

Answer 37

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 38

B407 Minimum Battery Voltage for Start

Answer 38

24 volts | Starting below 24 may result in hot start

Question 39

B407 For start, how long can throttle be in idle position before starter latching is disabled?

Answer 39

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

Question 40

B407 After a start, under what conditions should you stabilize at idle for 1 minute?`

Answer 40

If engine has been shutdown for more than 15 minutes

Question 41

B407 During start, what are the key call outs/things to watch?

Answer 41

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

Question 42

B407 With generator on, what is the normal voltage?

Answer 42

28 VDC ±5

Question 43

B407 At what total fuel indication is the forward tank full?

Answer 43

770 lbs (appx)

Question 44

B407 At what total fuel indication is fuel transfer complete?

Answer 44

193 lbs (appx)