5 Questions
What is the purpose of the speed brake auto retract feature?
The speed brakes (flight spoilers) automatically retract when the speed brake handle is not in the RETRACTED position and the Thrust Lever Angle (TLA) is 90% or angle of attack limiting is encountered.
What is the purpose of the ground spoiler switch?
The ground spoiler switch is used to select the ground spoiler system OFF in the event of a ground spoiler component failure or deployed ground spoiler panel.
How does the Spoiler System Electronics provide redundancy?
Each Flight Control Computer (FCC) transmits on four separate BD429 buses to the spoiler Remote Electronics Units (REUs), providing a total of eight independent FCC buses for spoiler control. Additionally, the Brake and Flap Control Unit (BFCU) provides two separate ARINC 429 buses, one for each outboard flight spoiler Electro-Hydraulic Actuator (EBHA) REU.
What is the purpose of the MCE A429 transmit bus?
In the event where both outboard flight spoiler REUs fail, the MCE (Modular Avionics Unit) bus allows the FCCs to retain control of the surface by directly commanding the MCE, which normally controls the spoiler surfaces through the EBHA REUs.
What is the purpose of the Spoiler Panel Fail CAS message?
The Spoiler Panel Fail CAS message indicates a failure of a ground spoiler component or a deployed ground spoiler panel.
Learn about the actuation of the speed brake handle in aircraft, which causes spoiler panels to deploy proportionally. Explore the functionality of the speed brake control module containing RVDTs sensors and an edge light panel for indicating handle positions.
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