Bell 407GX Performance & Limits Flashcards
B407 How does Bell define a “run on landing”?
landing with forward ground travel greater than 3 feet with weight on the skids.
B407 Max Allowable cabin deck loading?
75 lbs/sq.in.
B407 Max Allowable baggage compartment deck loading?
86 lbs/sq.in.
B407 Max Allowable weight in aft cargo compartment?
250 lbs
B407 Max internal gross weight?
5000 lbs.
5250 lbs with STC
B407 VNE - Basic?
140 KIAS up to 3000’ DA
Decreases with altitude per placard.
B407 VNE - Takeoff power?
100 KIAS (or placard if less) TQ between 93.5 and 100.0%
B407 VNE - Doors removed?
100 KIAS (or placard if less)
B407 VNE - Autorotation?
100 KIAS (or placard if less)
B407 Max allowable airspeed for sideward or rearward flight (or crosswind hover)?
35 KIAS
B407 Max Operating Altitude?
20,000 DA or PA, whichever is lower
B407 Max Rate of Climb?
2000 ft/min
B407 Slope Landing Limits?
10° side slopes
10° nose up-slope
5° nose down-slope
B407 When shall ENG ANTI ICE be ON
In visible moisture when OAT is below 5°C (40°F)
B407 Generator Load Limits?
180 amp
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
B407 Generator Load Limits?
200 amp
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
B407 Starter Limits
External Power
40s - ON / 30s - OFF
3 attempts
30min - OFF
Note: 28 VDC GPU limited to 500 amps
B407 Starter Limits
Battery Power
60s - ON/OFF
3 attempts
30min OFF
B407 NG - Gas Producer Limits
63 to 105% - Continuous
105.1 to 106.5% - 10sec transient
B407 NP - Power Turbine Limits
99 to 100% - Continuous
102.1 to 107.3% - 15 sec transient
68.4 to 87.1% - avoid continuous operation
B407
Under what NP conditions will ENGINE OVSPD warning message illuminate?
- 1% for 2.5 sec
- or- - 3% immediately
B407
When operating in MANUAL mode, NP should be maintained at what speed?
95 to 100%
B407 MGT Limits?
flight operations
100 to 727°C - Continuous
727 to 779°C - Takeoff, 5 minutes
780 to 905°C - Transient, 12 seconds
B407 MGT Starting Limits?
Do not exceed:
10 seconds above 843°C
-or-
1 second at 927°C
B407 Engine Torque Limits?
0 to 93.5% - Continuous
93.5 to 100% - Takeoff, 5 minutes
105% - Transient, 5 seconds
B407 Fuel Pressure Limits?
8 to 25 PSI continuous
B407 Engine Oil Pressure Limits?
50 PSI min NG < 79% 90 PSI min NG = 79-94% 115 PSI min NG > 94% 130 PSI max 200 PSI cold starts only
B407 Engine Oil Temperature?
0 to 107°C - Continuous
B407 What are the Engine Oil Temp considerations when hovering with a tail wind?
Tailwind > 10 kts
OAT > 37.8°C (100°F)
Monitor temp. Reduce power, nose into wind, or fwd flight to cool down.
B407 XMSN Oil Pressure Limits?
30 PSI - min
30-40 PSI - idle ops
40-70 PSI - continuous
70 PSI - max
B407 XMSN Oil Temperature Limits
15 to 110°C - continuous
B407 Rotor RPM - Power ON
99 to 100% - continuous
B407 Rotor RPM - MANUAL mode
95 to 100%
B407 Rotor RPM - Power OFF
85 to 107%
CAUTION >90% for training
B407 Rotor Brake Limits?
NR < 40%
Apply as necessary for emergency stops
Starts with break prohibited
B407 Useable Fuel Capacity (gallons and pounds)
127 gallons
869 lbs
B407 Define VH
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
B407 Minimum Battery Voltage for Start
24 volts
Starting below 24 may result in hot start
B407
For start, how long can throttle be in idle position before starter latching is disabled?
60 seconds.
If exceeded, close throttle then return to idle.
B407
After a start, under what conditions should you stabilize at idle for 1 minute?`
If engine has been shutdown for more than 15 minutes
B407
During start, what are the key call outs/things to watch?
25% NG - Rotors turning
50% NG - START msg extinguished
55% NG - Engine msg extinguished
60% NG - AUTO RELIGHT msg extinguished
B407
With generator on, what is the normal voltage?
28 VDC ±5
B407
At what total fuel indication is the forward tank full?
770 lbs (appx)
B407
At what total fuel indication is fuel transfer complete?
193 lbs (appx)