DRAG DEMO

Drag Demo Lesson by wifiCFI

Objective

To determine that the applicant:

Exhibits instructional knowledge of the elements related to the effects of various airspeeds and configurations during engine inoperative performance by describing: 

Selection of proper altitude for the demonstration. 

Proper entry procedure to include pitch attitude, bank attitude, and airspeed. 

Effects on performance of airspeed changes at, above, and below VYSE. 

Effects on performance of various configurations: 

Extension of landing gear. 

Extension of wing flaps. 

Extension of both landing gear and wing flaps. 

Wind milling of propeller on inoperative engine. 

Airspeed control throughout the demonstration. 

Proper control technique and procedures throughout the demonstration.

To determine that the applicant:

Exhibits instructional knowledge of common errors related to the effects of various airspeeds and configurations during engine inoperative performance by describing: 

Inadequate knowledge of the effects of airspeeds above or below VYSE and of various configurations on performance. 

Improper entry procedures, including pitch attitude, bank attitude, and airspeed. 

Improper airspeed control throughout the demonstration. 

Rough and/or uncoordinated use of flight controls. 

Improper procedures during resumption of cruise flight.

Demonstrates and simultaneously explains the effects of various airspeeds and configurations during engine inoperative performance from an instructional standpoint. 

Analyzes and corrects simulated common errors related to the effects of various airspeeds and configurations during engine inoperative performance.

Flying the Maneuver – Set Up

Clear the area

Configure aircraft

Flaps and gear up

Prop set to high RPM

Select an altitude above 3,000’ AGL

Select an outside reference point

Flying the Maneuver – Performance

Reduce the Left Throttle to Idle

Maintain heading

Advance Right Throttle to Full

Maintain heading

Pitch for Vyse

Note climb performance

Simulate feather the failed engine (left)

Note climb performance

Slow below Vyse

Note climb performance

Accelerate above Vyse

Note climb performance

Return to Vyse

Extend the Landing Gear

Note climb performance

Retract Landing Gear and add 1 notch of Flaps

Note the climb performance

Extend second notch of Flaps

Note climb performance

Extend final notch of Flaps

Note climb performance

Extend the Landing Gear

Note climb performance

Flying the Maneuver – Recovery

Retract Flaps

Hold Vyse

Retract Gear

Hold Vyse

Return to cruise flight 

Flying the Maneuver – Summary

Drag Demo is a demonstration manuever used to show a student the effects of differing aircraft configurations on single engine climb performance.

Common Errors

Failure to adequately clear the area 

Improper starting altitude

Improper aircraft configuration

FAA Sources Used for This Lesson

Certified Flight Instructor Practical Test Standards