Max Performance Takeoff

Purpose: To transition from the surface or a lower hover to a maximum performance climb.  Demonstrates obstruction clearance.

Cyclic: Pitch Attitude/Airspeed; Ground Track
Collective: Altitude; Rate of Climb
Pedals Heading

Description:

Set the aircraft down on a flat, level surface.  Perform the following performance checks:

  1. Roll RPM’s to 70-75%
  2. Apply frictions
  3. Determine 5 min. limit MAP
  4. Perform magneto checks
  5. Remove frictions and roll throttle to 102%

If conducting a confined operation, reposition as far down wind as possible while still ensuring sufficient clearance from obstacles.

Complete a pre-take off check

Engine and rotor tachometers are in the green

All operating gauges in the green

Sufficient fuel for the operation (quantity and time)

Ensure skids are clear prior to lift off.  While on the surface clear the area.

Choose a reference point outside the aircraft to maintain a constant ground track.

Begin the takeoff by slowly increasing the collective until light on the skits.  Once ready to lift, smoothly increase collective not to exceed 5 minute takeoff power setting, while simultaneously applying gentle forward cyclic to a 40 KT pitch attitude.  Maintain ETL until obstacle is cleared.  Addition left pedal will be needed in order to maintain heading.

Note: The pilot must closely monitor the RPM when operating within  the high power range.  IN the event of a reduction of RPM, the pilot must immediately terminate the maximum performance takeoff and initiate lower RPM recovery.

Once clear of obstacle, slowly apply forward cyclic to achieve a 60 KT pitch attitude.

 

Crosswind Considerations:

During crosswind takeoffs, the aircraft is flown in a “slip” until an altitude of 50 feet AGL. Cyclic adjustment may need to be made in the direction of the wind in order to maintain proper ground track. Above 50 feet AGL, place the aircraft in trim using the pedals.

Private ACS Commercial PTS
Heading + 10 Degrees + 5 Degrees
RPM + 2% + 2%
Ground Track + 5 Feet + 3 Feet
Manifold Pressure  Do NOT Exceed Limitis
Common Errors

  1. Failure to consider performance data.
  2. Improper RPM Control.
  3. Improper use of flight controls.
  4. Failure to use the pre-determined power setting to establish attitude and airspeed appropriate to the obstacle(s) to be cleared.
  5. Failure to resume normal climb power and airspeed after obstacle clearance.
  6. Drift during climb.
Safety Considerations

  1. Positive exchange of controls
  2. Guard Controls in the event the student applies abrupt control inputs
  3. Airport environment, traffic in the area, traffic in pattern
  4. Special emphasis should be placed on density altitude and gross weight
  5. Exercise extreme caution to avoid dynamic rollover during lift off
  6. Be ready to take immediate action in the event the RPM decays or you experience rotor droop