R22 Limitations Flashcards
Oil Temperature Green Range
75 to 245 degrees F
Oil Temperature Red Line
245 degrees F
Cylinder Head Temperature
Green Range
200 to 500 degrees F
Cylinder Head Temperature
Red Line
500 degrees F
Manifold Pressure
Yellow Arc
19.6 to 24.1
Manifold Pressure
Red Line
24.1
Powerplant
O-360-J2A
145 BHP (Derated) @ 2700 RPM
Rotor Speeds
Power On
Maximum 104% (530 RPM)
Minimum 101% (515 RPM)
Rotor Speed
Power off
Maximum 110% (561 RPM)
Minimum 90% (459 RPM)
Oil Pressure
Minimum Idle
25 psi
Oil Pressure
Minimum during flight
55 psi
Oil Pressure
Maximum during flight
95 psi
Oil Pressure
Maximum during start/warm up
115 psi
Oil Quantity (Minimum)
4 quarts
Engine Speed
Maximum Continuous
104% (2652 RPM)
Engine Speed
Maximum Transient
106% (2700 RPM)
Main Rotor Diameter
25 feet 2 inches
Main Rotor Blade Chord
7.2” inboard
7.7” outboard
Main Rotor Blade Twist
-8 degrees
Main Rotor Tip Speed (104%)
698 fps
Tail Rotor Tip Speed (104%)
622 fps
Tail Rotor Diameter
42 inches (3.5 feet)
Tail Rotor Blade Chord
4 inches
Tail Rotor Blade Twist
0 degrees
Tail Rotor Precone Angle
1 degree 11 minutes
Temperatures for Carb Ice Formation
Carburetor ice can form in a wide range of atmospheric conditions, but is most likely to form when OAT is between -4°C and 30°C (25°F and 86°F) AND the difference between OAT and dew point is less than 15C° (27F°)
Total Useable Fuel
26.3 gal
Main Tank Useable Fuel
16.9 gal
Aux Tank Useable Fuel
9.4 gal
