5. Flight / Nav Data Instruments Flashcards
Where do the ADCs get pitot / static information?
ADC 1 - left side pitot / static system
ADC 2 - Right side pitot / static system
What do the ADCs feed information to?
- AFCAS
- FMS
- Attitude/Heading System (IRS) (ADC’s provide TAS to IRS’s)
- EFIS
- FWS
- GPWS
- FDR
8 Transponders
What happens if an ADC fails? What can you do about it?
A level 2 alert is issued.
The offside ADC can be selected by using the ADC source select P/B.
Where do you set the QNH reference pressure?
Altimeter set panel
What feeds the combined standby altimeter or altimeter / ASI?
Pitot static system 3
What do the angle of attack vanes provide information to?
2 AoA vanes provide data to their respective ADC’s, AFCAS and the Stall Prevention System.
Where does the TAS information to the IRS’s come from?
from the ADC’s
From where can you enter data into the IRS’s?
- FMS (preferred)
- Manually via the Inertial System Display Unit (ISDU)
If an IRS fails, what do you see and what can you do?
Alert will be presented (IRS 1&2 = level 2 alert / IRS 3 = level 1 alert).
IRS 3 can be selected at the ATT/HDG source select push button on the main instrument panel.
How and from where can you align the IRS’s?
Mode selector at the MSU in either ALIGN or NAV
How long does an alignment take?
full alignment = 10 minutes
Can the aircraft be moved during alignment?
No
What mode will the IRS’s be in after alignment in NAV?
NAV mode
How could you re-align the IRS’s?
Quick align = select ALIGN mode briefly. The ALIGN mode light will come on for 30 sec.
The ALIGN mode light must be out before the aircraft is moved again.
Where can weather data be displayed?
on the NAV displays
On some aircraft on the MFDU displays
Can the pilot’s displays be independently controlled?
Yes for:
- ON/OFF
- Brightness
- Range
Other weather radar functions are controlled through a single control panel on the pedestal
What do dashes in the VOR/DME frequency and course windows mean?
Dashes = frequency is auto tuned
What can you do if an ILS fails?
Offside ILS can be selected with the ILS source select P/B.
When is ILS frequency tuning inhibited?
In LAND mode
What can you do if a Rad Alt fails?
- Level 2 alert
- Offside RA can be selected at the RA source select P/B.
What do the RA’s supply?
- EFIS
- FWC
- GPWS
- AFCAS
What do each pilot’s EFIS displays consist of?
2 display units
1 PFD and 1 ND
How many EFIS control panels are there?
2
What can you do in case of display unit failure?
use the PFD/ND XFR P/B on the source select panel
Where are pitch, roll, and heading compared?
By the FWC
Differences will be detected and alerts presented
Where is attitude normally displayed?
PFD
Where is ILS information displayed and in what modes?
On both PFD and ND
In ROSE and ARC modes
Where is heading and course normally displayed?
ND’s and RMI’s
Where is the heading bug displayed?
On the ND in ROSE, ARC and MAP modes.
Also displayed on the PFD
What can be displayed on the RMI’s?
DME in the top window
2 x VOR bearings
2 x ADF bearings
When is the standby horizon powered?
When BATT switch is on
or when fuel lever is open(some aircraft)
How is avionics cooling accomplished?
3 x blower fans
2 x suction fans
1 x emergency cooling fan
