R22 Specs & Limitations

Question 1

Rotor Diameter

Answer 1

25’2”

Question 2

Height

Answer 2

8’11”

Question 3

Length (Overall)

Answer 3

28’9”

Question 4

Length (Nose to Tail Rotor)

Answer 4

21’7”

Question 5

Width

Answer 5

6’4” Skid-to-Skid

Question 6

Max Gross Weight

Answer 6

1370 lbs

Question 7

Minimum Gross Weight & Seat Weight

Answer 7

Gross: 920 lbs
Seat: 135 lbs with full fuel.

Question 8

Max Seat Weight

Answer 8

240 lbs (50 lbs under seat baggage)

Question 9

VNE

Answer 9

102 kias @ 3000’ DA

Question 10

Flight Limitations

Answer 10

• Solo from right seat only
• Left seatbelt must be buckled at all times
• Aerobatic flight prohibited
• Flight above 14000’ DA prohibited
• Flight in known icing conditions prohibited
• Governor-Off Flight prohibited
• Flight without Robinson Required Equipment (GOALH) prohibited

Beware HHHH (hot, heavy, high, humid) conditions

Question 11

Engine Type & Details

Answer 11

Lycoming O-360 J2A

• 4 Cylinder, Horizontally Opposed
• Naturally Aspirated, Carberated
• Air Cooled
• Direct Drive

Question 12

Engine Performance

Answer 12

145 BHP @ 2700 RPM (106%)

Derated to 131 BHP Max 5 and 124 BHP Continuous @ 2652 RPM (104%)

Question 13

Fuel Capacity and Type

Answer 13

16.9 gallons useable, 100 octane Avgas or better, typically LL (Low Lead)

With full fuel, one can fly for 1:22 and still have a 20-minute reserve.

Question 14

Rotor RPM (Speed) Limits

Answer 14

Power On: 101-104%

Power Off: 90-110%

Question 15

Rotor System

Answer 15

Underslung, semi-rigid, CCW

Advantages: Simplicity, light weight, maintains blade center of mass during flapping eliminating need for lead/lag hinges

Disadvantages: Risk of mast bumping

Question 16

Recommended Airspeeds

Answer 16

Takeoff, Climb, Landing Approach : 60
Max Rate of Climb (Vy): 53
Max Range: 83
Turbulence: 60-70
Autorotation: 60-70

Question 17

Manifold Pressure Gauge

Answer 17

Normal Range is 19.6 to 24.1”

Question 18

Low Fuel Light

Answer 18

Indicates 1.5 gallons (10 minutes flight time) remaining

Question 19

Engine Overspeed Protocols

Answer 19

Transient engine overspeeds (above 104% and up to 106%) should be reported to LEA SMS.

Overspeeds from 107% to 110% due to pilot error must be cleared with maintenance.

Overspeeds greater than 107% due to governor or equipment malfunction must be addressed by maintenance.

Question 20

Door Removal

Answer 20

Only instructors may remove doors and must sign off doing so in the binder per Portland FSDO regulations.

Question 21

Carburetor Icing Conditions

Answer 21

-4° to 30° C and <15° spread between OAT and dew point

Question 22

Cabin Width

Answer 22

3’8”

Question 23

FAA/Robinson R22 Wind & Turbulence Limits (AD 95-26-04)

Answer 23

With less than 200 hours (50 in the R22), pilots may not fly:

1. With surface wind speeds >25 kts
2. When the surface gust spread is >15 kts
3. Continued flight in moderate, severe, or extreme turbulence is prohibited*.

Adjust airspeed to between 60 KIAS and 0.7 Vne. Never below 57 KIAS.

*Moderate turbulence is defined as “changes in altitude or attitude, variations in airspeed, and a definite strain against seatbelts.”

Question 24

Leading Edge Weather Limitations

Answer 24

First Solo (supervised):
8 KT winds
1000’ ceiling
3 mi visibility
<6000’ DA @ surface

Solo XC:
12 KT winds
2000’ ceiling
10 mi visibility
<6000’ DA @ surface