Limitations

Question 1

Engine Oil Pressure Limits (Figure 2-1, 2

Normal, Min Ground Idle, 80-95% N1, Above 95% N1, Max Emergency Power, Max Cold Starts

Answer 1

Normal - 35-90 PSI
Min Ground Idle - 5 PSI
80-95% N1 - 35 PSI
Above 95% N1 - 50 PSI
Max Emergency Power - 110 PSI
Max Cold Start - 150 PSI

Question 2

Engine Oil Temperature Limitations (Figure 2-1, 2)

Answer 2

Max - 149 C

Question 3

Engine Transmission/Transmission Temp Limits (Figure 2-1, 4)

Answer 3

Max Engine Transmission Limit - 190 C

Max Transmission Limit - 140 C

Question 4

Transmission Oil Pressure Limits (Figure 2-1, 4)

Answer 4

Min Ground Idle - 7 PSI
Min 100% RPM - 20 PSI
Normal - 20 to 90 PSI

Question 5

Rotor Limitations (Figure 2-1, 1)

Answer 5

Power Off - 91% Min Transient, 96 to 108%, up to 111% Max Transient
Normal - 97 to 101%
Power On Max - 102 to 106% Max Transient

Question 6

Cruise Guide Indicator (Figure 2-1)

Answer 6

Flight at or Below 98% RRPM with an inoperative CGI is prohibited

Question 7

Start and Shutdown Limits

Answer 7

• APU start is prohibited with a tailwind in excess of 25 kts
• Main Engine start is prohibited with a tailwind in excess of 10 kts
• Rotor blade start-up/shutdown limits in Figure 2-6
  - Clear, level area that is 300 ft from obstructions
  - Aircraft should be oriented for wind at the left side.

Question 8

VNE Limits (Figure 2-1, 1)

Answer 8

Max - 170 kts

Bubble windows - 130 kts

Question 9

TIT Limitations (Figure 2-1, 2)

Answer 9

Max Continuous - 400 to 816 C
30 minutes - 854 C
10 minutes - 899 C

Contingency Power (Starts at 900°C)
2.5 minutes - 930 C

Transient Power
Max 12 seconds or less - 940 C Never Exceed

Question 10

N1 Limitations (Figure 2-1, 2)

Answer 10

Idle - 50 %
Max - 110%
N1 over speed can cause an over temp or over torque

Question 11

Torque Limitations (Figure 2-1, 3)

Answer 11

Max Dual Engine - 100%

Max Single Engine - 123%

Question 12

Hydraulic System Limitations (Figure 2-1, 4)

Answer 12

Min Pressure - 1800 PSI (Light Illuminated)

Normal - 3000 PSI

Question 13

Accumulator Precharges

Answer 13

Flight Hydraulics - 1400 PSI

APU Start Module - 1400 PSI

APU Start Accumulator - 1800 PSI

Power Steering - 1400 PSI

Brake - 800 PSI

Question 14

Flight Hydraulic Pressure Limitations (Figure 2-1, 4)

Answer 14

Min - 2500 PSI
Normal - 2500 to 3200 PSI
Max - 3200 PSI

Question 15

Utility Hydraulic Pressure Limitations (Figure 2-1, 4)

Answer 15

Min - 2500 PSI
Normal - 2500 to 3500 PSI
Max - 3500 PSI

Return Pressure - 60 PSI

Engine Start takes approximately 3350 PSI

Question 16

Flight and Utility Hydraulic Temperature Limitations (Figure 2-1, 4)

Answer 16

Max - 120 C

Caution - 95 to 120 C

Question 17

Hydraulic Cooling System Temps

Answer 17

63°C - On

-54°C - Off

Question 18

N2 Limitations

Answer 18

Max - 111.5%

Over speed may occur over 106% RRPM

Question 20

Fuel Limitations (Chapter 8)

Answer 20

Emergency fuel cannot be used for more than 6 hours

Question 21

Max Gross Weight

Answer 21

50,000 lbs

26,000 lbs on the center hook

Question 22

Fuel Flow Limitations (Figure 2-1, 3)

Answer 22

Max - 2000 PPH at 100% Torque

Question 23

Maneuvering Limitations

Answer 23

• Aerobatics are prohibited(30° Pitch, 60° Roll)
• 45° bank limits with altitude hold on
• Bank limits with CGI inoperative (Figure 2-5)

Question 24

Max Running Landing Speed

Answer 24

60 kts

Question 25

Max Nose-Up Attitude for Running Landing

Answer 25

20° Nose Up

Question 26

Max Rate of Descent at Touchdown
Weights up to 33,000 lbs
Weights 33,000-40,000 lbs
Weights above 40,000 lbs

Answer 26

492 ft/min
450 ft/min
360 ft/min

Question 27

Ground Limitations

Answer 27

Right/Left Directional - .75 inch pedal
Aft Cyclic - 2 inches
Lateral Cyclic - 1 inch
THRUST CONT lever - No lower than ground detent

Question 28

Types of Operation

Answer 28

• Day VFR only
• No flight into known icing conditions
• Lightning cable and straps must be installed on blades
• Operations on water are not permitted

Question 29

APU Operation

Answer 29

• APU operation in flight is prohibited
• Windshield anti-ice, pitot/static heaters, cabin UTIL 3 phase receptacles, and fuel boost pump systems shall not be operated concurrently and for duty cycles greater than 5 min on/10 min off
• Continuous operation of no more than 3 boost pumps is permitted

Question 30

Pitot Heat

Answer 30

Must not be on for more than 5 min on the ground

Question 31

Windshield Heat

Answer 31

Shall not be used above 24°C

Question 32

Single-Point Refueling

Answer 32

Max pressure is 300 gpm at 55 psi

Question 33

Fuel Tanks

Answer 33

Left Main - 278 gal
Left Fwd Aux - 122 gal
Left Aft Aux - 118 gal

Right Main - 274 gal
Right Fwd Aux - 119 gal
Right Aft Aux - 117 gal

Question 34

Engine Oil (Both Engines and APU)

Answer 34

BP 2380

Question 35

Wind Limitations

Answer 35

Max Tailwind - 40 kts
Max crosswind/sideward flight - 45 kts
Max rearward flight - 40 kts
Rearward flight may cause FADEK failure

Lower section of the cabin door max - 60kts
Closing upper section of the cabin door - below 100 kts
Rescue door not opened above 90 kts
Windshield wipers off above 130 kts

Left side escape hatch not opened in flight

Question 36

Transmission Oil

Answer 36

Turbo 25

Question 37

Rotor Head Oil

Answer 37

Spirax

Question 38

Lag Dampners and Strut (Hydraulic Fluid)

Answer 38

Aeroshell #4

Question 39

Flight, Utility, and Simplex HPU (Hydraulic Fluid)

Answer 39

Royco 83282