Kodiak 100 Series Information Manual page 31

Uncontrolled if printed
Max
Operation
Torque
1790
Takeoff
1970 (3)
Max 1670
Climb 1840 (3)
Max
1670
Cruise 1840 (3)
Idle —
Max
1875
Reverse (6)
Transient 2100 (7)
Starting —
Max
Continuous 1790
Emergency 1970 (3)
(11)
NOTE (1): The minimum oil pressure is 85 PSI, at gas generator speeds above 72%, with the oil
temperature between 60°C and 70°C. Oil pressures below 85 psi are considered critical and should only
be tolerated for the minimum amount of time to complete the flight, while operating under a reduced power
setting. Oil pressure indications below 85 psi should be reported as a discrepancy and corrected prior to
the next flight. Oil pressure indications below 40 PSI are unsafe and require engine shutdown or a landing
be made as soon as possible, using the minimum power required to sustain flight.
NOTE (2): For increased oil service life, an oil temperature between 74°C and 80°C is recommended.
A minimum oil temperature of 55°C is required for proper operation of the fuel heater, prior to attaining
takeoff power.
NOTE (3): Propeller RPM must be set at or below 2000 RPM when achieving this maximum torque value.
Max Torque for Takeoff is limited to 5 minutes.
NOTE (4): These values are time limited to two (2) seconds.
NOTE (5): Increase N to keep within this limit.
g
NOTE (6): Reverse thrust operation is limited to one (1) minute.
NOTE (7): This value is limited to twenty (20) seconds.
NOTE (8): The maximum shaft horsepower for takeoff/max continuous is 750. The maximum shaft
horsepower for climb and cruise is limited to 700. The engine may not produce these maximum ratings
under certain temperature and altitude combinations (as reflected in the Takeoff, Climb and Cruise
Performance charts).
NOTE (9): In the event of failure of the main propeller governor, causing an overspeed condition, it is
permissible to complete a flight with the propeller controlled via the overspeed governor, provided this limit
is not exceeded.
NOTE (10): This value is time limited to 2 seconds. Starting temperatures above 850°C should be
investigated for cause of problem.
NOTE (11): Use of this rating is intended for emergency or abnormal conditions (i.e., maintaining altitude
in extreme wind-shear or icing conditions).
Note (12): When Air Conditioning is ON, refer to minimum N
Chapter 5.
P i l o t 's O p e r a t i n g H a n d b o o k
1 0 0 S E R I E S
Gas
Maximum Generator
ITT°C RPM
(%N )
g
790 101.6
765 101.6
740 101.6
52.5 to
685 (5)
55.5 (12)
790 101.6
850 (4) 102.6 (4)
1090 (10) —
790 101.6
Table 2-4 – PT6A-34 Engine Operating Limits
D O N OT U S E FO R FL I G H T O PE R AT I O N S
Oil
Propeller Pressure
RPM PSIG
(1)
2200
85 to 105
2000
2200
85 to 105
2000
2200
85 to 105
2000
— 40 (min)
2100 85 to 105
2420 (9)
85 to 105
— —
2200
85 to 105
2000
on Max Generator Power Figures in
g
S e c t i o n 2
L I M I TAT I O N S
Oil
Temp. SHP
°C (8)
(2)
750 @
10 to 99
<31.0°C
700 @
0 to 99
<28.3°C
700 @
0 to 99
<19.4°C
-40 to 99 —
750 @
0 to 99
<31.0°C
0 to 99 —
-40
—
(min)
750 @
10 to 99
<31.0°C
2 -7