Study Guide-Flight Control Panel Flashcards
What does ELAC stand for?
Elevator Aileron Computer
How many ELACs are there?
2
What are the functions of the ELAC?
-Control of the elevators, ailerons, and the Trimmable Horizontal stabilizer (THS).
-The ELACs compute the need for roll spoiler movement (which is sent to the SECs), and rudder yaw movement (which is sent to the FACs).
In the event a single ELAC should fail, what would happen?
The remaining ELAC is capable of providing complete control of the ailerons, elevators, and THS (Trimmable Horizontal Stabilizer).
What does SEC stand for?
Spoiler Elevator Control
How many SEC’s are installed?
3
What is the primary responsibility of the SECs?
Spoiler control. Each SEC controls one or 2 pairs of spoilers.
What does a FAULT light in the SEC pb mean
The SEC is inoperative.
What do you lose when a SEC is inop?
The spoiler panels associated with the failed SEC are inoperative.
Both ELACs fail, can any of the SECs provide backup and of what functions?
SECs 1 and 2, can provide backup pitch control of the elevators and THS (Trimmable Horizontal Stabilizer). Aileron control is lost and the ailerons streamline. Roll is accomplished with just the spoilers.
What does FAC mean?
Flight Augmentation Computer
How many FACs are there?
2
What are the functions of the FACs?
-Rudder
-Rudder Limiting
-Rudder Trim
-Yaw dampening
-Auto Turn Coordination
-Characteristic Speeds
-Flight Envelope & Maneuvering Computations
-Low Energy Warning Computation (Speed, Speed, Speed)
-Alpha Floor Protection
-Windshear detection
What happens if you select a FAC pb to OFF?
Deactivates the corresponding yaw dampening and rudder trim functions to that FAC. If the FAC is still operable, it continues to compute all flight envelope functions and maneuvering speeds.
