Indicating/Recording Systems Flashcards
Describe the organization of the Electronic Instrument System (EIS).
▪ Six identical cathode ray tube Display Units (DUs) in two parts:
▪ Electronic Flight Instrument System (EFIS):
• Two Primary Flight Displays (PFDs) – normally displayed on the outboard DU.
• Two Navigation Displays (NDs) – normally displayed on the inboard DU.
▪ Electronic Centralized Aircraft Monitor (ECAM):
• Engine/Warning Display (E/WD) – normally displayed on the Upper ECAM.
• Systems Display (SD) – normally displayed on the Lower ECAM
Describe the components of the Air Data Inertial Reference System (ADIRS).
▪ Three Air Data Inertial Reference Units (ADIRUs), each divided into two units:
• Air Data Reference (ADR) Unit – processes pitot-static information.
• Inertial Reference (IR) Unit – processes attitude, positional, and wind data.
• ADIRU 1 supplies information to the CA’s PFD and ND.
• ADIRU 2 supplies information to the FO’s PFD and ND.
• ADIRU 3 serves as a backup.
Describe the general displays of the E/WD.
▪ Primary engine operating parameters - N1, N2, EGT and Fuel Flow ▪ Supplemental operating information: • Thrust limit mode • Fuel on Board (FOB) • Slat/Flap position ▪ Memo section: • Normal and non-normal operations, including checklists. • Class 1 ECAM messages.
Explain the color coding convention on the E/WD. ❇️Green? ❇️White? ❇️Blue? ❇️Amber? ❇️Red? ❇️Magenta? ❇️ Amber Xs?
- Green – normal, long-term operation.
- White – remarks and labeling guidance for procedures.
- Blue – units of measure and ECAM action steps.
- Amber - failure or configuration needing crew awareness, but not necessarily immediate action.
- Red – a failure or configuration requiring immediate crew action.
- Magenta - informational messaging.
- Amber Xs – information not available.
What is the EFIS Display Unit (DU) priority in the event of a screen malfunction?
▪ The PFD takes priority over the ND.
▪ If the outer DU is turned off or fails, the PFD automatically transfers to the inner DU.
What is the ECAM Display Unit (DU) priority in the event of a screen malfunction?
▪ The E/WD (upper ECAM) takes priority over the SD (Lower ECAM).
▪ If the upper ECAM DU is turned off or fails, the E/WD automatically transfers to the lower ECAM DU.
What are the functions of the ND brightness control knobs?
The inner knob?
The outer knob?
▪ The Inner knob is used to power and vary the brightness of the respective ND.
▪ The Outer knob is used to vary the brightness of:
• Weather Radar displays and
• GPWS displays
Explain the functions of the three Display Management Computers (DMCs).
▪ The DMCs process signals received from the sensors and computers within the aircraft for display on the DUs.
▪ DMC 1 provides information to the CA’s PFD, ND, and the E/WD.
▪ DMC 2 provides information to the FO’s PFD, ND, and the SD.
▪ DMC 3 serves as a backup to either DMC 1 or DMC 2.
What accompanies an independent failure message?
▪ Independent – A failure that affects an isolated system or item without degrading the performance of other systems or components:
• Presented in the left column of the E/WD memo section.
• Affected system is underlined. Example: – F/CTL, HYD, ELEC.
• Specific failure follows the affected system. Example: F/CTL ELAC 1 FAULT.
What accompanies a primary failure message?
▪ Primary – A failure that affects the use of other systems or components:
• Presented in the left column of the E/WD memo section as a “Boxed Item”
What is the significance of a secondary failure?
Secondary – Systems or components affected as the result of a Primary failure:
• Presented in the right column of the E/WD memo section in amber.
What would be the indications of a Display Unit (DU) failure?
▪ A failed DU will flash, go blank or be distorted.
▪ DUs are not monitored by the FWCs, so there will be no ECAM messages.
What is the function of the STATUS page and when is it displayed?
▪ Located on the SD.
• Provides a summary of the aircraft’s operational status and capabilities as it relates to an existing malfunction/s.
▪ Displayed by:
• Pressing the STS pb on the ECAM control panel.
• Automatically when FLAPS 1 has been selected in the approach phase of flight (provided that a malfunction/s continues to exist)
• Automatically as part of the ECAM non-normal procedure. The STAUS page is the last page displayed when sequencing through an ECAM non-normal procedure.
NOTE: A white boxed STS indication appears at the lower portion of the E/WD whenever information exists on the STATUS page.
Describe the functions of the SWITCHING panel.
▪ ATT HDG?
▪ AIR DATA?
▪ EIS DMC?
▪ ECAM/ND XFR?
▪ ATT HDG – selects IRU 3 for attitude and heading information when IRU 1 or 2 fail.
▪ AIR DATA – selects ADR 3 for pitot-static information when ADR 1 or 2 fail.
▪ EIS DMC – selects DMC 3 when DMC 1 or 2 fail.
▪ ECAM/ND XFR – transfers the SD (lower ECAM) information to the CA’s or FO’s ND screen.
What is the function of the CLR pb on the ECAM control panel?
▪ CLR pbs
▪ Used to clear failure messages and sequence through the SD pages during an ECAM non-normal procedure.
▪ With multiple failure messages displayed, pressing the CLR pb will remove (clear) the first message and all its associated action steps.
