Bell 206L4 Performance & Limits

Question 1

How does Bell define a “torque event”?

Answer 1

Torque events are defined as a takeoff or lift, internal or external load. Torque events shall be recorded.

Question 2

B206
Max allowable cabin deck loading?

Answer 2

75 lbs/sq.in.

Question 3

Max allowable baggage compartment deck loading?

Answer 3

86 lbs/sq.in.

Question 4

B206
Max allowable baggage compartment weight?

Answer 4

250 lbs.

Question 5

What equipment must be installed for operations in falling and/or blowing snow?

Answer 5

Snow Deflector Kit

Question 6

B206
Max internal Gross Weight?

Answer 6

4450 lbs

Question 7

B206 Basic Vne?

Answer 7

130 KIAS up to 3000 ft. DA

Decrease according to placard above 3000’

Question 8

B206 Take off power Vne?

TORQUE 75-100%

Answer 8

84 KIAS

or placard, whichever is less.

Question 9

B206 Doors off Vne?

Answer 9

90 KIAS

or placard, whichever is less.

Question 10

B206 Autorotational Vne?

Answer 10

100 KIAS

or placard, whichever is less.

Question 11

B206 Max operating altitude?

Answer 11

20,000 ft. PA

10,000 ft. DA if gross weight > 4150 lbs

Question 12

Max ambient temp for engine anti-ice use?

Answer 12

5°C / 40°F

Question 13

When shall ENGINE ANTI ICE and PITOT HEAT be ON?

Answer 13

When OAT < 5°C / 40°F

In visible moisture.

Question 14

B206
When shall the fuel control heater valve be ON?

Answer 14

< 10°C / 50°F

Question 15

B206
When shall the fuel control heater valve be OFF?

Answer 15

> 21°C / 70°F

Question 16

B206 Generator load limits?

Answer 16

0 to 90% DC Load

0 to 180 amps

Question 17

B206 Starter Limits?

Answer 17

External Power:
40s ON / 30s OFF - 3 attempts, then 30min OFF

Battery Start:
60s ON / 60s OFF - 3 attempts, then 30min OFF

Question 18

GPU spec limits for external power?

Answer 18

28 VDC

500 amps

Question 19

B206
Gas Producer (N1) Limits?

Answer 19

60/63 to 105% - Continuous*
106.5% - Transient, 10 seconds

*depends on Gauge P/N

Question 20

B206 Power Turbine (n2) Limits?

Answer 20

71.8 - 91.5% - Avoid continuous ops
99-101% - continuous
104% - transient, 5 minutes

Question 21

B206
TOT normal operating limits?

Answer 21

100 to 716°C - continuous
716 to 768°C - Takeoff, 5 minutes
871°C - Power-on transient, 10 seconds

Question 22

B206 TOT start/shutdown limits?

Answer 22

Depends on gauge:
(older gauges)
768 to 927°C - do not exceed 10 sec
927°C - momentary peak, 1 second

(newer gauges)
826 to 927°C - do not exceed 10 sec
927°C - momentary peak, 1 second

Question 23

B206
Engine Torque (Q) limits?

Answer 23

0 to 75% - continuous
75 to 100% - takeoff, 5 minutes
105% - transient, 5 seconds

Question 24

B206
Fuel Pressure limits?

Answer 24

8 to 25 PSI

Question 25

B206
Engine Oil Pressure limits?

Answer 25

50 PSI min - N1 <= 79%
90 PSI min - N1 <= 94%
115 PSI min - N1 > 94%
130 PSI max

Question 26

B206
Engine Oil Temperature limits?

Answer 26

0 to 107°C

Question 27

B206
Transmission Oil Pressure limits?

Answer 27

30 PSI min

40-70 PSI continuous

Question 28

B206
Transmission Oil Temperature limits?

Answer 28

15 to 110°C - continuous

Question 29

B206 Rotor RPM (Nr) Power On limits?

Answer 29

95% - transient, 5 seconds
99 to 101% - continuous
104% - transient, 5 minutes

Question 30

B206 Rotor RPM (Nr) Power Off limits?

Answer 30

90 to 107% - continuous

Question 31

B206
Rotor Brake Limits?

Answer 31

Apply between 38 and 30% Nr during coast down

Question 32

Relative Wind Limits Area A:

Below 3000’ DA - IGE?

Answer 32

35 kts. all azimuths

Question 33

Relative Wind Limits Area A:

Below 3000’ DA - OGE?

Answer 33

060° to 150° - (2 to 5 o’clock) - 30 kts.

150° to 060° - (all others) - 35 kts.

Question 34

B206
Relative Wind Limits Area A:

Above 3000’ DA - IGE & OGE?

Answer 34

26 kts. all azimuths

Question 35

B206 Relative Wind Limits Area B?

Answer 35

050° to 210° - (1 to 7 o’clock) - calm

|210° to 050° - (all others) - 26 kts.

Question 36

Relative Wind Limits Area C?

Answer 36

315° to 045° - (10 to 2 o’clock) - 26 kts.

045° to 315° - (all others) - calm