MEPT Avionics & Instruments Revision Questions V2.0 Flashcards
What is the automatic reversion for the Garmin display units when PFD 1 fails?
The MFD mode is reversionary (it becomes a PFD with engine indication system included) and the PFD 2
mode remains normal.
What is the automatic reversion for the Garmin display units when the MFD fails?
PFD 1 and PFD 2 modes are reversionary (they include engine indication system)
What is the automatic reversion for the Garmin display units when PFD 2 fails?
PFD 1 and the MFD remain in normal mode.
Which components of the Garmin Prodigy EFIS normally provide data for display of ASI, Mach, altimeter,
VSI and temperature on PFD 1 and PFD 2 respectively?
Air Data Computer (ADC) 1 for PFD 1 and ADC 2 for PFD 2.
Which components of the Garmin Prodigy EFIS provide data for the display of attitude, turn rate, turn
coordination and heading on the PFDs?
Attitude and Heading Reference System (AHRS) 1 (normally to PFD 1) and AHRS 2 (normally to PFD 2).
When the MFD is in reversionary mode, which components of the Garmin Prodigy EFIS provide data for
the primary flight instrument indications?
ADC 1 and AHRS 1.
If PFD 1 fails, what other avionics equipment also indicates as FAIL (red X).
GIA 1 (which includes COM 1, NAV 1, GPS 1, AFCS/FD 1) and also XPDR, TCAS, RADALT and DME which
all interface to GIA 1.
Which components of the Garmin Prodigy EFIS process the data that gives indications for aircraft
systems and engine instruments?
Garmin Engine/Airframe Units (GEA 1, 2 & 3).
When the MFD is in reversionary mode (i.e. it becomes a PFD), which components of the Garmin Prodigy
EFIS provide data for the primary flight instrument indications?
ADC 1 and AHRS 1.
Which display unit failure does NOT result in any loss of other avionics or data sources?
Failure of PFD 2
In addition to the PFDs, which other systems/components use ADC 1 and ADC 2 outputs?
ADC outputs are used by the Transponder, the AFCS, the on-side AHRS. ADC 1 outputs data to the
FADEC 1b, GIA 1 and MFD (when in reversionary mode).
ADC 2 interfaces with GIA 2 and FADEC 2b but not the MFD.
Which components of the Garmin Prodigy EFIS contain solid state 3 axis rate sensors and 3 axis
accelerometers, 2 axis tilt sensors and 2 temperature sensors?
AHRS 1 and 2.
In the event of both AHRS failing, how do the PFDs receive attitude information?
The PFDs revert to ATT STBY with information coming from the IESI via the data concentrator and HSDB.
Why does GIA 1 interface with the IESI?
So that the IESI can utilise NAV 1 receiver for VOR/ILS navigation or approach
Which avionics components interface to the Garmin Prodigy EFIS via the Data Concentrator Unit and
then the SAT Wx Rx using avionics HSDB to connect to the MFD and then the PFDs?
The ADF receiver, the Cockpit Voice and Data Recorder, the Emergency Location Transmitter (ELT) and
the Weather Radar.
How can the flight crew manually switch the PFDs/MFD into reversionary modes in the event of
automatic reversionary switching due to PFD or MFD failure?
By pressing the DISPLAY BACKUP buttons on the audio panels.
What is the minimum height of obstacles that are displayed in the Synthetic Vision System on the PFD?
200 feet agl.
What is indicated by the red and white ‘barber pole’ in the media below? What is indicated by the
magenta bar on the right hand side?
The red and white barber pole shows Vmo/Mmo (overspeed) for the current aircraft configuration.
The magenta bar is the airspeed trend vector which extends to the airspeed in 6 seconds based on
current acceleration or deceleration.
What speed after take-off are the take-off speeds disabled/removed from the ASI display?
Above 160 kts.
What are the tuning mode options for the Distance Measuring Equipment (DME)?
NAV 1, NAV 2 or HOLD
How is the format of the Flight Director command bar configured (between single cue or cross-pointer)?
Switching between each format is via the MFD ‘AUX’ page group, sub-page ‘SYSTEM SET UP’.
What is the maximum radar height above ground level that the RADALT reading is displayed?
2500 feet.
How does the RADALT sensitivity vary from least to most sensitive in respect of height above the
ground?
It is more sensitive as the height above the ground decreases from +/- 15 ft between 1500-2500ft to +/-
5 ft between 0 and 200 ft.
What happens to the RADALT indication when the radar height above the ground is at or below the
RADALT minimums set in the TMR/REFs function?
The readout is displayed in yellow instead of green.