Systems-AFCS, Flight Controls, Flight Instruments Flashcards
What is the primary purpose of the ALTITUDE pre-selector?
To command the aircraft to capture and maintain an altitude.
What happens when you push the XFER button on the flight control panel?
It couples the autopilot and the flight director to the other side.
When you press the XFR button what else should you also change?
The ATC SEL to coupled side
Does the autopilot disconnect when you push the SYNC button?
No, all you are doing is releasing the autopilot servo clutches.
What modes does the autopilot default to if no specific modes are selected?
The autopilot defaults to pitch and roll mode.
Does pressing the AFCS SEL switch from 1 to 1 change the flight director?
No, you get the same flight director but the backup FCC (flight control computer).
Which flight control surfaces does the autopilot trim?
Only the horizontal stab.
How many IRS systems are needed to engage the autopilot?
Two with independent sources for heading.
Describe the autopilot
- Dual channel
- Two-axis (pitch and roll)
- Fail (passive)
- Integrated with flight director
What is required to engage the autopilot?
- two independent IRS sources
- At least one yaw damper engaged (AP does not auto engage)
- AP disconnect switch in normal position
- No faults detected on act e FCCs
- No excessive instability (pitch/roll/yaw rates or attitudes; G-load)
What does TURB mode do?
-Reduces pitch and roll gains of AP
Disconnects with AP disconnect, pushing of TURB button, or when capturing LOC.
Which hydraulic system operates the ground spoilers?
1 HYD system
Which side is the aileron A/P servo located?
Right side
When does the auto-ignition come on during the stall sequence?
When the needle on the SPS TEST gauge enters the BLUE area.
How is an aileron PCU JAM depicted on the FLT CTL synoptic page?
A “Half-Moon” symbol on the affected aileron.
What is the purpose of the flight spoiler detent mechanism?
To ensure a maximum “split” of 20degrees between sides.
What is the significance of a “FLAP MOTOR OVERHEAT” message?
Flaps will move at half speed
Which STAB TRIM channel is powered during EMER PWR only?
2 channel
Which bus powers STAB TRIM channel #2?
DC ESS BUS
What is the source for the LOW SPEED CUE?
AUX AOA vane
What color is data that is pilot selected on the displays?
Magenta
How can the TAKEOFF REF page be displayed?
Selecting the “MFD DATA” key on the CDU
How does the EFIS display a failed source? (eg Altitude)
The failed information is removed and replaced by a red flag.
What is the static source for the standby instruments?
The S3 ports (Below the pilot’s window)
