Limitations Flashcards
Max sea level Ambient temp
53 degrees
Decrease 2 degrees/1000 feet
Minimum ambient temp
-54 degrees for any altitude
Engine de icing
4.4 degrees visible moisture
Altitude limit
20 000 feet pres alt
Airspeed limitations
7500 pounds sea level: 120kts decrease 3kts/1000,
7500 to 8500 pounds sea level: 115kts decrease 3kts/1000’
8500 pounds and above sea level 110kts decrease 3kts/1000’
Doors locked open or removed: 100kts to 3300’ decrease 3kts/
1000’ there after
MCP 47.5 psi 80kts for all weights
Max gross internal
9500 lbs
Max gross ext
10500 lbs
N1 RPM MAX
102% structural limit
N2 RPMs
Min 91% 6000 RPM permissable 0 to 30 kts
Min 97% 6400 RPM continuous
Max 100% 6600 RPM
Fuel pres
5 to 35 psi
Oil pres
25 psi min 40% to 71% N1
25 psi to 80 psi min 71% to 85% N1
80 to 100 psi max 80% max N1
100 psi max
Oil temp Engine
15 degrees min
15 to 93 degrees operation
93 degrees max
Torque limitations
12 to 47.5 psi continuous operation
47.5 to 54 psi 5 min limit
54 psi max
Shaft horsepower
47.5 psi torque 1100 shp
54 psi torque 1250 shp
EGT VS OAT LIMITATIONS
Never exceed 626 degrees during start
Refer to gauge for take off and mcp EGT compared to OAT
Ignition limitations
2 min on 2 min off 2 min on 23 min off Engine start may not be successful below -12.2 degrees or above 8000’ pres jet A
Starter limitations
35 sec on 3 min off 35 sec on 30 min off 35 sec off
Loadmeter limitations
Max 0.5 (150 amp) red radial
Trans limitations oil pressure
30 psi min
30 to 40 psi below flight idle rpm
40 to 70 psi continuous operation
70 psi max
Transmission limitations oil temp
15 to 110 degrees continuous operation
110 degrees max
Rotor limitations
Power on Minimum 91% permissible 0 to 30kts Minimum 97% Maximum 100% Power off Min 91% Max 104.5%
