Podcast
Questions and Answers
Increasing oil pressure in the propeller hub moves the blades toward low-pitch, high rpm.
Increasing oil pressure in the propeller hub moves the blades toward low-pitch, high rpm.
True
The recommended bank angle to use when performing turns with one engine inoperative is 20 degrees.
The recommended bank angle to use when performing turns with one engine inoperative is 20 degrees.
False
The descending blade of the propeller generates higher thrust than the ascending blade in a high AoA situation.
The descending blade of the propeller generates higher thrust than the ascending blade in a high AoA situation.
False
An increase in weight and a forward CG lowers Vmc.
An increase in weight and a forward CG lowers Vmc.
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The asymmetrical load of propellers contributes to the left turning tendency in conventional airplanes.
The asymmetrical load of propellers contributes to the left turning tendency in conventional airplanes.
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Open cowl flaps during a sudden power reduction will lead to a high rate of descent.
Open cowl flaps during a sudden power reduction will lead to a high rate of descent.
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There are three types of fuel pumps to provide fuel pressure: engine-driven pumps, electrical boost pumps, and gravity-fed pumps.
There are three types of fuel pumps to provide fuel pressure: engine-driven pumps, electrical boost pumps, and gravity-fed pumps.
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To execute an instrument approach on one engine, plan to fly the final approach segment at Vyse or Vmc, whichever is lower.
To execute an instrument approach on one engine, plan to fly the final approach segment at Vyse or Vmc, whichever is lower.
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An engine failure must be considered for all departures in a multi-engine airplane.
An engine failure must be considered for all departures in a multi-engine airplane.
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The speed for best rate of climb in a multi-engine airplane is known as Vxse.
The speed for best rate of climb in a multi-engine airplane is known as Vxse.
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The left engine is considered the critical engine in all twin engine aircraft.
The left engine is considered the critical engine in all twin engine aircraft.
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During a one-engine-inoperative approach, flaps should be used as little as possible until landing is assured.
During a one-engine-inoperative approach, flaps should be used as little as possible until landing is assured.
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If a takeoff is initiated at an altitude greater than the OEI service ceiling, level flight will occur after takeoff if an engine failure happens.
If a takeoff is initiated at an altitude greater than the OEI service ceiling, level flight will occur after takeoff if an engine failure happens.
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Turbocharging increases the service airplane's ceiling by enabling a better air-fuel ratio.
Turbocharging increases the service airplane's ceiling by enabling a better air-fuel ratio.
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The altitude at which Vx and Vy are the same is referred to as absolute ceiling.
The altitude at which Vx and Vy are the same is referred to as absolute ceiling.
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A red light on the landing gear indication system indicates that the wheels are ascending, descending, or not yet locked.
A red light on the landing gear indication system indicates that the wheels are ascending, descending, or not yet locked.
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Study Notes
Multi-Engine Aircraft Operation - Study Notes
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Propeller Blade Movement: Increasing oil pressure in the propeller hub moves blades toward low-pitch, high RPM.
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Turn Bank Angle (OEI): Recommended bank angle for turns with one engine inoperative is 15 degrees.
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Propeller Assymetry (High AoA): A higher thrust generated by the descending blade causes assymetry in a high AoA situation.
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Vmc Factors: Increasing weight and a forward CG lower Vmc.
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Left Turning Tendency: Propeller asymmetric load contributes to the left turning tendency in conventional airplanes.
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High RoD in Approach (Sudden Power Reduction): Reduced induced airflow causes a high RoD during a sudden power reduction in approach.
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Fuel Pump Types: Two types of fuel pumps are used for fuel pressure: engine-driven and electrical boost pumps.
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Takeoff Speed (V1): V1 (Takeoff Decision Speed) is the highest speed for initiating action to stop the aircraft if an aborted takeoff is needed. This is crucial in the event of an engine failure during takeoff.
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Recommended Takeoff Speed: Recommended T/O speed is Vmc + 5kts.
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Instrument Approach (OEI): For an instrument approach with one engine inoperative, fly the final approach segment at the lower of Vyse or Vmc.
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Critical Engine (Clockwise Rotation): The right engine is not the critical engine in multi-engine aircraft with clockwise turning propellers.
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Vxse Definition: Vxse is the best angle of climb with one engine inoperative (OEI).
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Takeoff Checklist: During takeoff run, monitor RPM, map, oil temperature and pressure, and also check fuel flow (FF) and airspeed.
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Stabilized Approach Benefits: Executing a stabilized approach prevents potential risky engine-out go-arounds.
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Ground Rolling Turns (Tight Turns): Power differential is the recommended procedure for tight turns while rolling on the ground.
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Engine Failure Consideration: All departures in a multi-engine airplane must consider the possibility of an engine failure.
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Best Rate of Climb (Multi-Engine): Vy is the speed for best rate of climb in a multi-engine airplane. Vyse is Vy with one engine inoperative.
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Service Ceiling and Density Altitude: The service ceiling is not longer with lower density altitude. Density altitude impacts climb performance—not service ceiling.
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Critical Engine: The left engine is not the critical engine in all twin-engine aircraft, this varies by aircraft type.
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Propeller Assymetrical Load: Assymetrical load of propellers tends to make conventional airplanes turn to the left.
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Landing Gear Warning Horn: The landing gear warning horn will sound if the gear is up and one throttle is reduced to idle.
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Single-Engine Service Ceiling: The single-engine service ceiling is determined by a rate of climb of 50 ft/min for a twin-engine aircraft.
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Feathering Propeller: Feathering the propeller is recommended if the failed engine cannot be restarted after failure.
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Takeoff Decision Speed (V1): V1 is the highest speed at which a pilot must initiate action to stop the aircraft if an aborted takeoff is required, in the event of an engine failure.
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Propeller Synchronizer: Propeller synchronizers arenot used during takeoffs to balance RPM between engines. Propeller synchronizers are systems used to maintain engine RPM similarity in operation, not during takeoff and landing.
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Flaps during OEI Approach: During an engine-in-operative (OEI) approach, flaps should be operated as little as possible until the landing is assured to minimize drag.
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Engine Failure Drag: Windmilling propeller contributes significantly more drag during an engine failure.
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Altitude and Engine Failure During Takeoff: If the takeoff is initiated at an altitude greater than the single-engine service ceiling, an engine failure will result in maintaining level flight after takeoff.
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Vx and Vy Crossover: The altitude at which Vx and Vy are equal is the service ceiling, not the absolute ceiling or decision altitude.
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Landing Gear Indication: A red light on the landing gear indication system signals that the landing gear is not yet locked, or is ascending or descending.
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Turbocharging and Service Ceiling: Turbocharging increases the service ceiling by providing higher manifold pressure (MAP) at higher altitudes, allowing the engine to generate more power.
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Description
Explore critical concepts of multi-engine aircraft operations with these study notes. Topics include propeller blade movement, turn bank angles, and factors affecting Vmc. Ideal for students and pilots preparing for advanced aviation quizzes.
