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TH-67 Limitations Exam

Instructions: Answer each question in its entirety. If you do not answer it 100% correct, it is wrong.

Engine Oil Pressure
- psi Minimum below % N1
- psi Minimum from % to % N1
- psi Minimum above % N1
- psi Minimum
- psi Maximum
- Note: During temperature operation the oil pressure may exceed the maximum of psi. Stabilize the engine at engine idle speed of % to % until the engine oil temperature is above C and the engine oil pressure is within normal limits.
Engine Oil Temperature
- C to C Continuous Operation
- C Maximum
Transmission Oil Pressure
- psi to psi Continuous Operation
- psi Minimum
- psi Maximum
- Pressure light comes on at < psi
Transmission Oil Temperature
- C to C Continuous Operation
- C Maximum
- Temp light comes on at > C
Load Meter: % Maximum
Fuel Pressure
- psi Minimum
- psi to psi Continuous Operation
- psi Maximum
- psi Minimum - (Type A, A1, JP5, JP8) below C to C
Fuel Quantity
- Red Line on
- Fuel Low light on at approx gallons
Fuel System Capacities
- Total fuel capacity gallons
- Unusable fuel capacity gallons
- Usable fuel capacity gallons
Torquemeter
- % to % Continuous Operation
- > % to % Take-Off Power Range ( Minute Limit)
- % Maximum
- Transient TQ Limit is: % to % ( Seconds Maximum)
  Intentional Use is .
Turbine Output Temperature (TOT) Limits:
- C to C Continuous Operation
- C to C Take-Off Power Range ( Minute Limit)
- C Maximum
- C to C ( Seconds transient) (Not to be used intentionally).
- C Maximum during startup and shutdown ( Seconds Maximum).
- Note: Red warning light illuminates when either of the following conditions are exceeded: If exceed C to C for seconds or higher than C.
Gas Producer (N1):
- % to % Continuous Operation
- % Maximum
- % to % Transient ( Seconds Maximum)
Rotor Limits:
- % Minimum Operation
- % to % accelerate thru this range
- % to % Normal Operation
- % Maximum
- % Power on Transient Rotor Droop ( Seconds Maximum)
Power Turbine (N2):
- % Minimum Operation
- % to % Continuous Operation
- % Maximum
- % to % 60 seconds max (time not cumulative)
- N2 Transient Overspeed Limit: Up to % N2 for seconds maximum depending on torque
Airspeed:
- to knots continuous operation
- knots maximum
- knots maximum for autos
- VNE for internal gross weights above 3,200 lbs. is knots, not to exceed placarded VNE
- Note: Autorotoation above knots will result in rates of and rotor RPM.
VMC Airspeed Limits:
- < lbs. G/W: knots at sea level to ft. pressure altitude, then decreasing knots per 1000 ft. above, to a max density altitude of .
- > lbs. G/W: knots at sea level to ft. pressure altitude, then decreasing knots per 1000 ft. above, to a max density altitude of .
- > lbs. G/W: knots, not to exceed placard VNE.
- Airspeed restrictions for high power settings: knots with > % to % torque applied.
Autorotation Airspeed Limits:
- Minimum Rate of Descent: knots
- Maximum Glide: knots
Engine RPM Limitations:
Warning:
Turbine Outlet Temperature (TOT) Limits:
Caution:
Wind Limitations:
- The helicopter can be started in a maximum wind velocity of knots and a maximum gust spread of knots.
- Note: Gust spreads are not normally reported. To obtain spread, compare minimum and maximum velocities.
- Maximum wind for hovering is knots crosswind and knot tailwind.
- For hover operations at gross weights above 3200 lbs.:
  - IGE maneuvers - refer to chapter 8
  - OGE maneuvers -

THURSDAY JUNE 20, 2019

TH-67 Limitations Exam