Flight Controls Study: G650ER™ Primary and Secondary Flight Controls

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What protects the wing flaps system and where can they be found?

Circuit breakers (CBs) protect the wing flaps system and can be found in various panel locations.

What does the CAS message 'Flap Asymmetry' indicate?

The CAS message 'Flap Asymmetry' indicates that flap position asymmetry has been detected.

When might the CAS message 'Flaps Maintenance Required' be displayed?

The CAS message 'Flaps Maintenance Required' might be displayed when a failure occurs within the flaps system that does not prohibit commanded flap movement.

What does the CAS message 'Flaps Rigging Complete' signify?

The CAS message 'Flaps Rigging Complete' signifies that rigging is valid for the current aircraft. Signup and view all the answers

Where is the dual-channel position sensor located for the outboard flap actuator, and how is it excited?

The dual-channel position sensor is located on each outboard flap actuator and is excited by the FECU. Signup and view all the answers

In what mode does the Flight Control System (FCS) operate when all conditions for Normal mode are satisfied?

Normal mode Signup and view all the answers

What are the four sub-modes of the Normal mode in the FCS?

On-ground, Takeoff and Landing, Cruise, and Angle of Attack (AOA) Limiting Signup and view all the answers

What condition must be met for the FCS to transition from the On-Ground sub-mode to the Takeoff and Landing sub-mode during a normal takeoff?

Radar altitude is greater than 10 feet AGL (Above Ground Level) Signup and view all the answers

If the horizontal stabilizer reports to the FCC that it is in Backup Mode, what does this indicate?

The stabilizer is directly controlled by the center console backup trim switch Signup and view all the answers

What are the conditions that must be satisfied for the FCS to be in Normal mode? (List at least two)

<ol> <li>Two or more air data probes are heated and providing consistent data, AND 2) At least one IRU is operating and without conflicting data from another IRU or all operating AHRS</li> </ol> Signup and view all the answers

What is the purpose of the Maintenance mode in the Flight Control Computer (FCC) and Remote Electronic Units (REUs)?

The Maintenance mode is used to rig (adjust or calibrate) the FCC and REUs via the Centralized Maintenance Computer (CMC). Signup and view all the answers

What conditions must be met for the aircraft to enter Maintenance mode?

The aircraft must be in the 'on-ground stationary' condition, which means both Main Landing Gear Weight on Wheels (WOW) sensors are true, wheel speed is below 22 knots, speed brakes are extended with landing gear down, and the PARK/EMERG BRAKE handle is not down. Signup and view all the answers

What are the possible causes for the 'L-R Elevator Fail' caution message in the Crew Alerting System (CAS)?

The possible causes are: 1) Both REUs have failed, or 2) There is a loss of elevator command to both elevators. Signup and view all the answers

What does the 'Pitch Authority Limit' caution message indicate?

The 'Pitch Authority Limit' caution indicates that the pitch axis flight control surfaces are approaching their maximum displacement limits. Signup and view all the answers

Describe the physical construction and components of the horizontal stabilizer assembly.

The horizontal stabilizer surface is mounted at the top of the vertical stabilizer. It is supported by an aft hinge and a forward dual-electric-motor jackscrew actuator. The left and right elevator surfaces are mounted on the rear spar of the horizontal stabilizer. Signup and view all the answers

What is the purpose of the damping feature in the primary flight control actuators?

To protect the primary control surfaces from potential damage caused by wind gusts (up to 65 knots) while the aircraft is on the ground with hydraulic systems depressurized. Signup and view all the answers

What does the acronym 'SPOST' stand for, and when is it performed?

SPOST stands for System Power On Self-Test. It is performed during the Cockpit Preflight Inspection checklist (AFM 02-01-10) and the Before Starting Engines checklist (AFM 02-03-20). Signup and view all the answers

Explain the purpose of performing the SPOST with the MAIN BATTERIES selected ON without APU GEN power during the first flight of the day.

It exercises the system without having the FCC Batteries receiving power from the EBHA and UPS Battery chargers in order to accurately check battery health. Signup and view all the answers

What is the significance of the phrase 'There is no "gust lock" mechanism' in the context of the flight controls?

It implies that the aircraft does not have a dedicated mechanism to lock the control surfaces against wind gusts, but instead relies on the damping feature of the primary flight control actuators. Signup and view all the answers

Which of the following systems are mentioned in the text as being part of the primary and secondary flight controls?

All of the listed systems are mentioned in the text as being part of the primary and secondary flight controls. Signup and view all the answers