The turn coordinator

Question 1

Turn and slip coordinator

Answer 1

• Needle and Ball
• Needle Indicates approximate RATE OF TURN
  -Alignment of needle with “L” or “R” indicates it will make a 360 degree turn in 2 minutes.
• Inclinometer indicates whether or not turn is coordinated (level of centrifugal forces versus horizontal component of lift)

Question 2

Turn coordinator

Answer 2

• A miniature airplane provides information on both rate of turn (yaw), and rate of roll.

Question 3

Turn coordinator operation

Answer 3

• Alignment with “L” or “R” tick marks means an airplane will make a 360 degree turn in 2 minutes.
• Inclinometer indicates whether or not turn is coordinated (level of centrifugal forces versus horizontal component of lift)

Question 3

Parts of the turn coordinator

Answer 3

• Aircraft symbol
• Level marker
• L/R Standard rate marker
• Standard rate turn index
• Inclinometer
• Failure flag

Question 4

The standard rate of turn

Answer 4

• The standard rate turn is a turn that changes its heading 3 degrees every second.
• 180-degree turn is made in 1 minute
• 360-degree turn is made in 2 minutes.
• Also known as “rate 1” turn.

Question 5

Quality of turns

Answer 5

Coordinated turn
Slipping turn
Skidding turn

Question 6

Important note on operation

Answer 6

• Most modern-day TC‟s are electrically powered
• If TC‟s are electrically powered, a failure will be indicated by a failure flag.
• Always STEP ON THE BALL!
• The inclinometer does not rely on suction pressure or electrical power
• Rate 1 turns are used in advanced phases of flight