20 Questions
What does an amber 'Uncommanded Flaps' message indicate?
Flap motion detected without a command input
How should a pilot plan for landing when an 'Uncommanded Flaps' message is displayed?
Plan for landing with reduced flap setting
How is the flap position controlled in the system?
The FECU controls the flap position based on flap position and flap resolver position
What senses the pilot inputs for flap extension or retraction?
Two single channel RVDTs on the flap handle
How are both left and right flaps operated in the system?
Both left and right flaps are simultaneously operated by the flap actuation system
What information is shown to the flightcrew regarding the FECU status?
CAS messages and synoptic page data
When is the flap motion considered 'Uncommanded'?
When there is flap motion detected without a command input
What does the FECU stand for in this system?
Flap Electronic Control Unit
How are the pilot inputs transmitted to the FCCs and avionics system?
Position data is transmitted from each FECU channel
What type of sensors are used to sense the flap handle inputs?
RVDTs (Rotary Variable Differential Transformers)
How does the flap actuation system operate the left and right flaps?
simultaneously
What type of sensors sense the pilot inputs from the flap handle?
RVDTs
What does the FECU do based on the flap position and flap resolver position?
controls the flap position
From where is the position data transmitted to the FCCs and avionics system?
each FECU channel
What is the significance of an amber 'Uncommanded Flaps' message?
fault detected but operational
How is the FECU status information presented to the flightcrew?
CAS messages and synoptic page data
What should a pilot do when planning for landing with reduced flap setting?
Plan for landing with reduced flap setting
How are the pilot inputs for flap extension or retraction transmitted to the FCCs and avionics system?
transmitted by the FECU
What information is displayed to the flightcrew regarding the flap system sensors and indication?
flap motion detected without a command input
How are the flap handle inputs sensed in the system?
by RVDTs on the flap handle
Test your knowledge on the system description of the flap system sensors and indication in the Gulfstream G650ER aircraft. Learn about the operation, control, and interface of the flap control system with the Flight Control Computers (FCCs).
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