AB-206 JET RANGER HELICOPTER || Graded A+.
Type of engine correct answers Rolls-Royce Model 250-C20 (318 HP)
Describe a correct engine decel check? correct answers It is required to carry out deceleration
check before initiating a practice autorotation.
After the first flight of the day, check engine deceleration time from 100% NR to 65% N1. If
deceleration time is less than 2 seconds, consult Rolls-Royce Operation and Maintenance
Manual.
(IDLE N1=60-64)
Engine anti-ice ON conditions? correct answers The maximum ambient temperature for use of
engine anti-ice is 4.4°C (40°F).
If temperature is 4.4°C (40°F) or below and visible moisture is present, the engine anti-icing
system shall be ON.
Observe TOT rise (if conditions warrant).
Type of rotor? correct answers 2-bladed teetering tail (short blades) and main rotor
Symmetrical airfoil
· Risks due to that type of rotor? correct answers Less CG envelope compared to fully-articulated
rotor systems
There is must bumping risk.
No control at low g
Prone to pilot overcontrolling because of slow fuselage respond to control input
Limited sidewind capability because of short tail rotor
Undesired stall characteristic because of symmetric main rotor blade
· Max Nr to use the rotor brake? correct answers 38% NR (it is not stated in flight manual)
, · Type of fuel Fuel used? correct answers Turbine fuel ASTM D-6615,
Jet B or MIL-DTL-5624 Grade JP-4 (NATO F-40) for all temperatures
Turbine fuel ASTM D-1655, Jet A or A-1,
MIL-DTL-5624 Grade JP-5 (NATO F-44) or MIL-DTL-83133 Grade JP-8 (NATO F-34), limited
to ambient temperatures above -18°C (0°F).
· Max Fuel? correct answers 77.06 U.S. gallons (291.7 litres) (Total Capacity)
76 U.S. gallons (287.7 liters) (Useful)
· Average fuel flow? correct answers Approximately:
25GPH hover
22GPH cruise
· MIN fuel to land? correct answers 20 gallons
· Fuel unusable in normal condition? correct answers 1.06 U.S. gallons
· And when there is a pump failure? correct answers 10 U.S. gallons
· Why? correct answers Engine driven fuel pump cannot suck the remaining 10 gallons of fuel
due to sloshing or out of trim conditions
· What to do in that case? correct answers Descend below 6000ft pressure altitude and land as
soon as practicable
· How many fuel pumps? correct answers Equipped with two electrically operated boost pumps
Fuel low caution light
Type of engine correct answers Rolls-Royce Model 250-C20 (318 HP)
Describe a correct engine decel check? correct answers It is required to carry out deceleration
check before initiating a practice autorotation.
After the first flight of the day, check engine deceleration time from 100% NR to 65% N1. If
deceleration time is less than 2 seconds, consult Rolls-Royce Operation and Maintenance
Manual.
(IDLE N1=60-64)
Engine anti-ice ON conditions? correct answers The maximum ambient temperature for use of
engine anti-ice is 4.4°C (40°F).
If temperature is 4.4°C (40°F) or below and visible moisture is present, the engine anti-icing
system shall be ON.
Observe TOT rise (if conditions warrant).
Type of rotor? correct answers 2-bladed teetering tail (short blades) and main rotor
Symmetrical airfoil
· Risks due to that type of rotor? correct answers Less CG envelope compared to fully-articulated
rotor systems
There is must bumping risk.
No control at low g
Prone to pilot overcontrolling because of slow fuselage respond to control input
Limited sidewind capability because of short tail rotor
Undesired stall characteristic because of symmetric main rotor blade
· Max Nr to use the rotor brake? correct answers 38% NR (it is not stated in flight manual)
, · Type of fuel Fuel used? correct answers Turbine fuel ASTM D-6615,
Jet B or MIL-DTL-5624 Grade JP-4 (NATO F-40) for all temperatures
Turbine fuel ASTM D-1655, Jet A or A-1,
MIL-DTL-5624 Grade JP-5 (NATO F-44) or MIL-DTL-83133 Grade JP-8 (NATO F-34), limited
to ambient temperatures above -18°C (0°F).
· Max Fuel? correct answers 77.06 U.S. gallons (291.7 litres) (Total Capacity)
76 U.S. gallons (287.7 liters) (Useful)
· Average fuel flow? correct answers Approximately:
25GPH hover
22GPH cruise
· MIN fuel to land? correct answers 20 gallons
· Fuel unusable in normal condition? correct answers 1.06 U.S. gallons
· And when there is a pump failure? correct answers 10 U.S. gallons
· Why? correct answers Engine driven fuel pump cannot suck the remaining 10 gallons of fuel
due to sloshing or out of trim conditions
· What to do in that case? correct answers Descend below 6000ft pressure altitude and land as
soon as practicable
· How many fuel pumps? correct answers Equipped with two electrically operated boost pumps
Fuel low caution light
