Podcast
Questions and Answers
What happens to the lateral and vertical modes when all FDs disengage without any AP engaged?
What happens to the lateral and vertical modes when all FDs disengage without any AP engaged?
Under what condition does the FD automatically disengage during ROLL OUT?
Under what condition does the FD automatically disengage during ROLL OUT?
What should a flight crew do to manually disengage an onside FD?
What should a flight crew do to manually disengage an onside FD?
Which condition causes the FD to disengage due to speed protection?
Which condition causes the FD to disengage due to speed protection?
Signup and view all the answers
Which of the following is NOT a reason for the FD to disengage due to failures?
Which of the following is NOT a reason for the FD to disengage due to failures?
Signup and view all the answers
What condition causes the pitch bar to flash for 10 seconds?
What condition causes the pitch bar to flash for 10 seconds?
Signup and view all the answers
What occurs if the FD guidance orders are not available while engaged?
What occurs if the FD guidance orders are not available while engaged?
Signup and view all the answers
Under which condition does the roll bar flash for 10 seconds?
Under which condition does the roll bar flash for 10 seconds?
Signup and view all the answers
What is indicated if the pitch bar is flashing due to inability to compute vertical deviation?
What is indicated if the pitch bar is flashing due to inability to compute vertical deviation?
Signup and view all the answers
What happens to the autopilots (APs) if one of the engagement conditions is lost?
What happens to the autopilots (APs) if one of the engagement conditions is lost?
Signup and view all the answers
During an approach with FINAL APP mode engaged, at what altitude do the APs disengage if the MDA/MDH is entered?
During an approach with FINAL APP mode engaged, at what altitude do the APs disengage if the MDA/MDH is entered?
Signup and view all the answers
At what bank angle will the APs disengage in normal law?
At what bank angle will the APs disengage in normal law?
Signup and view all the answers
Study Notes
Aircraft Systems - Auto Flight - Flight Guidance - Flight Director - FD Disengagement
- General Disengagement: If all Flight Directors (FDs) disengage while no Auto Pilot (AP) is engaged, lateral and vertical modes disengage, and the Automatic Thrust (A/THR) reverts to (or remains in) SPEED or MACH mode.
- AP Engaged Disengagement: If all FDs disengage while at least one AP is engaged, lateral and vertical modes remain engaged, and the A/THR remains engaged in the current mode.
- Manual Disengagement: The flight crew can manually press the on-side FD pushbutton to disengage the on-side FD.
- Automatic Disengagement (Roll Out): The FD disengages if, during the roll-out phase, the difference between the aircraft track and the runway track is more than 20 degrees.
- Automatic Disengagement (Due to Failures): The FD disengages if the FD, Flight Control Unit (FCU), or any engine fails.
- Automatic Disengagement (Speed Protection): The FD disengages if no AP is engaged and the aircraft speed is either below the Vertical Speed Limit (VLS) in Decending (DES) or Op Decending (OP DES) or above the Maximum Speed (VMAX) in Climb (CLB) or Op Climb (OP CLB).
- Post-Disengagement Action: After the FD disengages, the A/THR reverts to SPEED or MACH mode and adjusts the thrust to recover the target speed or keep the speed within the range from VLS to VMAX, if the target speed is out of this range.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers various aspects of Flight Director disengagement in aircraft systems. It includes general disengagement scenarios, automatic and manual disengagement procedures, and the impact of failures on flight guidance. Test your knowledge on critical flight guidance concepts and ensure safe operation of autopilot systems.
