Flight Controls & Flight Control Laws Flashcards
What type of flight control system does the A320 family aircraft utilize?
Fly-By-Wire system
Describe how the flight controls are controlled and activated.
Electrically Controlled and Hydraulically Activated
How is NORMAL LAW indicated on the PFD?
• Green “=” for pitch, bank, and over speed limits • Amber/black (ALPHA PROT) airspeed tape
How is ALTERNATE LAW indicated on the PFD?
Amber Xs (indicating lack of NORMAL LAW protections)
How is DIRECT LAW indicated on the PFD?
• Amber “USE MANUAL PITCH TRIM” • Amber Xs (indicating lack of NORMAL LAW protections)
How is MECHANICAL BACKUP indicated on the PFD?
• Red “MAN PITCH TRIM ONLY” • Amber Xs (indicating lack of NORMAL LAW protections)
When operating in NORMAL LAW in “flight” mode, what does the side stick command for pitch and roll?
• Pitch – G load • Bank – Roll rate
What is the significance of the Side Stick Priority (Red Arrow) Light?
The other pilot has gained side stick authority
Name the Flight Control Computers and the number of each.
7 FCCs: • ELAC – Elevator Aileron Computer (2) • SEC – Spoiler Elevator Computer (3) • FAC – Flight Augmentation Computer (2)
What are the some of the ELAC functions?
(NADAAA)
- N—Normal Elevator, Aileron, Pitch & Roll
- A—Alternate Pitch
- D—Direct Pitch & Roll
- A—Abnormal Attitude
- A—Aileron Droop
- A—Autopilot Orders
What are some of the SEC functions?
(SADAN)
- S—Speed Brakes/Ground Spoilers
- A—Alternate Pitch
- D—Direct Pitch & Roll
- A—Abnormal Attitude
- N—Normal Roll Via Spoilers
What does SEC 3 control?
Spoiler Control – one flight spoiler and one ground spoiler on each wing
What are some of the FAC functions?
• Rudder Trim • Rudder travel limit • Yaw control • Flight Envelope Protection – vertical • Windshear Protection • Low Energy Warning Protection • Alpha Floor Protection • Characteristic PFD speeds
What should happen to the THS after landing?
Reset to zero
Describe some of protections a pilot will have in NORMAL LAW.
(GRASP) • High Speed • High Angle of Attack (AOA Alpha Protection) • Load Factor Limitation +2.5G / -1.0G (+2.0G / 0.0G With Flaps/Slats) • Pitch Attitude (30° UP / 15° DN) • Bank Angle (67°)
Describe High Speed Protection.
If VMO/MMO plus a predetermined factor is exceeded, the system induces a pitch-up input to limit aircraft speed.