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Trimming the Aircraft

Introduction:

  • Trimming is one of the most basic skills a pilot must possess
  • It generally does not come easy to most pilots and therefore requires attention and practice

WARNING:
All procedures here are GENERALIZED for learning.
Fly the maneuver in accordance with the Pilot Operating Handbook (POH)
and/or current Standard Operating Procedures (SOPs)


Trim Basics:

  • You are working to trim for an airspeed!
  • If you are changing your airspeed in any way then your trim will be off

Procedure:

  1. Set and steady your airspeed (can be in a climb, descent, or level)
  2. Set the initial trim position by reducing the pressure on the controls
    • If the nose feels heavy, trim nose up
    • If the nose feels light, trim nose down
  3. Take your hands off of the controls
    • If the nose stays level, your trim has been set
    • If the nose wants to go up, you didn't set enough down trim
    • If the nose wants to go down, you didn't set enough up trim
  4. Set the attitude, then trim off the pressure with the appropriate correction
  5. Repeat steps 3 - 4 until the aircraft maintains the desired attitude

Common Errors:

  • Over controlling
  • Trimming when the aircraft's airspeed is changing

Practical Test Standards/Airman Certification Standards:

Airman Certification Standards:

References: