Standby Horizon and Compass Quiz

What powers the standby horizon's vertical gyro in large aircraft?

• The aircraft hydraulic system

• The engine-driven generator

• The aircraft battery system

• The pitot-static system

What is the function of the caging knob on a standby horizon?

• To shut down the gyro safely

• To display heading data

• To increase gyro spin speed

• To lock the gumbals in normal position

How does the mechanical erection system in a standby horizon correct the gyro's position?

• Using electrical signals from the battery

• By applying precession force via balls or slowly turning masses

• Through wireless communication with the ADI

• By resetting the gyro every 5 minutes automatically

What is the primary purpose of a standby horizon in larger commercial aircraft?

• To provide weather radar information

• To control the autothrottsystem

• To serve as a backup attitude reference during electrical failure

• To display the aircraft's ground speed

What is the maximum rate at which an erection system can correct the gyro's axis?

• 10 degrees per mumute

• 5 degrees per minute

• 3 degrees per minute

• 1 degree per minute

What happens when the attitude comparison system detects a significant difference in pitch or roll indications?

• The autoflight system disengages

• An alert is triggered by the warning system

• The standby horizon shuts down

• The glideslope pomter recalibrates

A pilot pulls the caging knob while the gyro is spinning down slowly. What issue is most likely to occur?

• The ADI will reset incorrectly

• The vertical gyro will indicate false heading

• The gyro may be damaged due to instability

• The pitch bar will be misaligned permanently

If the first officer's vertical gyro fails, which system ensures continuous ADI function?

• Autothrottle synchronization

• Switching to the third vertical gyro

• Magnetic backup compass

• Manual realignment of the original gyro

A pilot observes a 'CHECK ATTITUDE' message on the PFD. How should they determine which attitude indication is correct?

• Refer to the third vertical gyro or standby horizon

• Compare with the weather radar system output

• Adjust the flight director command bars manually

• Check the fast slow pointer for speed alignment

While preparing for takeoff, a pilot notices the ADI is not displaying correctly. What should they do to verify the attitude indication?

• Pull the caging knob to stabilize the gimbals

• Recalibrate the radio altimeter system

• Switch to the first officer's vertical gyro

• Press the test push button on the ADI