1. FP-2
T-44
Ops Limits
5/6/15

2. Overview System Limitations Propeller Limitations Starter Limitations
Engine Limitations
Airspeed Limitations
Miscellaneous Limitations

3. Instrument Markings
Limit above or below which continued operation is likely to cause damage or shorten life
Safe or normal range of operation
Special attention should be given…Operation is permissible, but should be avoided

4. Power Definitions
Max power available from the engines for takeoff. Time limited to 5 minutes.
Max Allowable
Max Continuous
Cruise Climb
Cruise
Max power available from the engines not time limited. Intended for emergency use.
The maximum power approved for a normal climb.
Power required to maintain level flight at a desired altitude and normal airspeed. Cruise power will vary w/ altitude & airspeed.

5. Propeller Limitations

6. Propeller RPM (N2) Normal: Maximum: Acceleration: Max Reverse: Idle:
Overspeed Test:
Overspeed Gov:
Fuel Topping:
RPM
2200 RPM
2420 RPM (2 sec)
2100 RPM
RPM > low pitch torque check
RPM > resets overspeed gov
2288 +/- 40 (4%)
2332 RPM (6%) (Think about digital prop RPM gauge limitations)
Note: N2 limits are NOT propeller limitations but instead
correspond to stress limits of the engine power section

7. Starter Limitations

8. Starter Limitations Min VDC for APU Charge Min VDC for APU Start
Min VDC for Batt Start
Starter Cycle:
18 VDC
20 VDC
22 VDC
40 sec on, 60 sec off
40 sec on, 30 min off

9. Start ITT Limitations 1. ITT ____ deg C for __ seconds
-- ITT approaches ___ deg C
-- Stop start, check BATT, APU start?
-- Report temp & duration if > 925 deg C
2. ITT on operative engine approaches ___ deg C
-- Stop start
-- Reset N1 to 85 percent & reattempt the start
925
790

10. Engine Limitations

11. Engine Torque Max Allowable Max Continuous Cruise Climb Cruise
Acceleration
5 Minutes
Continuous
2 Seconds
1315
RPM
2200
1900
1520
Condition Max Time
2100
1315
1520
2100
Note 1: Torque limits between 1900 and 2200 RPM vary linearly between 1315 and 1520 ft-lbs.

12. ITT Max Allowable Max Continuous Cruise Climb Cruise Lo-Idle Starting
Acceleration
Max Reverse
5 Minutes
Continuous
2 Seconds
1 Minute
790
765
740
685
1090
850
Max ITT
Condition Max Time
790
765
740
685
1090
850
Note 1: High ITT in low-idle may be decreased by reducing accessory load and/or increasing N1 speed.
Note 2: High generator loads at low N1 speeds may cause the ITT acceleration temp limit to be exceeded. Observe the generator load limits for specific N1 speeds (See pg. 4-5).

13. CAUTION
Engine torque and ITT limits are determined by ambient temperature. During operations requiring maximum engine performance, be aware of whether torque, or ITT limits govern. Remember, cold temperature or low altitude - torque limited, while hot temperature or high altitude is ITT limited.

14. N1 % Max Allowable Max Continuous Cruise Climb Cruise Acceleration
Max Reverse
5 Minutes
Continuous
2 Seconds
1 Minute
101.5
102.6 86
N1 %
Condition Max Time
Note 1: Ground operations above 3500 foot pressure altitude (PA) may produce idle speeds as high as 83-percent N1 at low idle.
Note 2: For every 10 deg C below -30 deg C ambient temperature, reduce maximum allowable N1 by 2.2%

15. Oil Pressure & Temperature
Condition Max Time
Deg C
PSI
Max Allowable
Max Continuous
Cruise Climb
Cruise
Hi-Idle
Lo-Idle
Starting
Acceleration
Max Reverse
5 Minutes
Continuous
------
2 Seconds
1 Minute
------
40 (min)
85-100
-40 (min)

16. Oil Pressure & Temperature Notes
-- Normal oil pressure is PSIG at power settings above % N1.
-- Oil pressure below 85 PSIG is undesirable and may be used only for completion of a flight, and then at a reduced power setting. Low oil pressure should be corrected prior to next flight.
-- During ground operations, oil pressures below 40 PSIG require engine shutdown
-- During flight, oil pressure below 40 PSIG is unsafe and requires either engine shutdown or use of minimum power until a landing can be made.

17. Airspeed Limitations 25

18. Airspeed Limitations Aircraft Speed SL to 15,500 FT 227 KIAS
Aircraft Speed 15, ,000 FT See Note
Smooth Air Gear & Flaps Down 140 KIAS
Turbulent Air Gear & Flaps Down 140 KIAS
Landing Gear Extension KIAS
Landing Gear Retraction KIAS
Flaps Extension 35% (App) 174 KIAS
Flaps Extended 100% (Full) 140 KIAS
Note: Decrease speed 4 KIAS for every 1000 ft above 15,500 ft

19. Miscellaneous Limitations

20. Fuel Management
** Do not takeoff if gauges are in the yellow arcs or < 265 lbs
** AVGAS is limited to 150 hours before overhaul
** Both boost pumps must be operable prior to takeoff
** Suction lift limited to 10 hrs between fuel pump overhaul

21. Weight Limitations Max Ramp 9710 lbs Max Takeoff 9650 lbs
Max Landing lbs

22. CAUTION
The following actions may result in aircraft damage and SHALL be avoided:
-- Landing on arresting gear cable
-- Nosewheel contact with cable risers above taxi speed
-- Braking during cable rollover
-- Operation above taxi speed over arresting gear rigged with boots (tire segments)

23. Questions ???