Ops Limits Flashcards
Max for Enrichment (Starting TIT)
100°C
Max Normal Start (Starting TIT)
200°C
Max During Start (Starting TIT)
830°C
Abnormal Torch (Starting TIT)
Stop/781/Inspect
TIT less than 720°C (Starting TIT)
Record in Form 781. Maintenance action required prior to flight.
TIT between 720° – 750°C (Starting TIT)
Record in Form 781. Perform temperature controlling check.
750°C - 830°C (Starting TIT)
Normal Start Limits
TIT exceeds 830°C (excluding momentary overshoot and peak at 94% RPM). (Starting TIT)
Record in Form 781.
TIT exceeds 850°C (excluding momentary peak at 94% RPM). (Stating TIT)
Discontinue the start and record in Form 781. One restart is permitted after cooling to below 200°C TIT. If TIT exceeds 850°C on second start, discontinue start and record. Restart is not recommended.
TIT exceeds 965°C (Starting TIT)
Discontinue the start and record in Form 781. (An overtem- perature inspection is required).
TAKEOFF (MAXIMUM) 90° throttle position
5 minutes max) (Engine TIT
1083°C
Takeoff Range (Engine TIT)
1067 - 1083°C
Takeoff Reduced Min. (Engine TIT)
900/970/1010°C
Normal Continuous (Engine TIT)
200-1010°C
MILITARY (30 minutes) (Engine TIT)
1049°C
Climb (Engine TIT)
1010°C
Exceeds 1083°C for more than 5 seconds or exceeds 1175°C momentarily (Engine TIT)
Reduce power to hold temperature within limits. Record in Form 781. (Overtemperature check/inspection required before next flight).
Crossover (Engine TIT)
65 deg / 820° ± 20°C
Normal Limiting (Engine TIT)
1083°C
Max Downshift TIT (Engine TIT)
850°C
Ignition (Engine RPM)
35%
Oil Press Indication (Engine RPM)
35%
LSGI (Engine RPM)
69 – 75.5%
Normal Ground Idle (Engine RPM)
94 – 102%
Max Reverse (Engine RPM)
96 – 106%
Flight Idle on Ground (Engine RPM)
92.5 – 100.5%
Normal (Engine RPM)
98 – 102% ± 0.5
Starter Disengage (Engine RPM)
60%
Oil Temp < 0°C (Engine Torque)
Minimum until oil temperature is above 0°C
Oil Temp 0 - 40°C (Engine Torque)
4,500 maximum at oil temperature 0 to +40°C
Max Allowable on T.O. (Engine Torque)
19,600 in-pounds
Max Allowable in flight (Engine Torque)
19,600 inch-pounds
NTS Action (Engine Torque)
- 1,260 ± 600 inch-pounds
Propulsion Check (Engine Torque)
8,000 inch-pounds
Torque Comparison Check (Engine Torque)
< 1,000 inch-pounds
Max Continuous (Engine Torque)
19,600 inch-pounds
Safety Coupling (Engine Torque)
- 6,000 inch-pounds
Load Range (Prop De-Icing)
65 – 90 Amps
Timing Cycle (Prop De-Icing)
15 Seconds On / 45 Seconds Off
Max Ground Ops (Prop De-Icing)
2 Cycles (2 Minutes)
Anti-Ice Amperage (Prop De-Icing)
20 Amps/prop
Max OAT Ops on the Ground (Windshield Anti-Ice)
27°C/81°F
Cold Start (Windshield Anti-Ice)
5 Sec On/10 Off, until -43°C
If temperature of the windshield panels is below –43C (–45F) the control systems do not function automatically
Capacity Range (Oil Quantity)
4-12 Gallons
Low Light (Oil Quantity)
4 Gallons
Allowable Burn Rate (Oil Quantity)
.25 Gallons/Hour
Frequency Range (AC Electric)
MIN 380 CPS - MAX 420 CPS
Voltage Range (AC Electric)
MIN 110 VOLTS - MAX 125 VOLTS
Max load in Flight (AC Electric)
1.05
Engine Generator Capacity (AC Electric)
40 KVA
APU Generator Capacity (AC Electric)
40 KVA
APU Generator Load (AC Electric)
1.05
DC Voltage (Range/Normal) (DC Electric)
25-30V / 28V
Maximum DC Load (DC Electric)
1.03