Primary Flight Display Flashcards
What does each column mean on the PFD?
A/THR | VERTICAL | LATERAL | APPRCH CAPABILITY, DH/MDA | AP, FD, A/THR ENGAGEMENT STATUS
How is the crew made aware of mode changes on the FMA?
A white box is temporarily displayed around the new indication (10-15secs)
How are armed modes displayed on the FMA?
Blue – armed
Magenta – armed because of a constraint
Green – engaged
When is the side stick position indication icon (white cross) displayed?
Displayed when the first engine is started Disappears at liftoff
What would the large red arrowheads indicate?
Pitch attitude of >30˚
What is the meaning of USE MANUAL PITCH TRIM?
You are in Direct Law
What is the meaning of MAN PITCH TRIM ONLY?
You are in Mechanical Backup
What are the pitch and roll angle limits indicated by the green = signs?
Pitch: +30˚ up/-15˚ down
Roll: +/- 67˚
How can you determine you are in Alternate Law?
Amber X’s replace the green = marks at the pitch and bank limits
Only VLS and VSW is displayed on the airspeed scale
When would the sideslip index change from yellow to blue?
In case of an engine failure during takeoff/go-around, it is now a blue beta target
What does the yellow speed trend line on the airspeed display indicate?
The speed the aircraft will reach in 10 seconds if acceleration/deceleration remains constant
What is the difference between the magenta and blue target airspeeds?
Magenta – Managed speed computed by the FMGC
Blue – Selected speed on the FCU
What is Vls and how is it displayed?
Represents lowest selectable speed providing an appropriate margin to the stall speed
Defined by the top of the amber strip along the airspeed scale
In approach mode is equivalent to Vref
What speed does Vmax represent and how is it displayed?
It is the lowest of Vmo/Mmo, Vle, or Vfe
Defined by the bottom of a red and black strip along the speed scale
What is Green Dot speed?
Engine out operating speed in clean configuration
Appears when the aircraft is in the clean configuration Corresponds to the best lift-to-drag ratio