• Versatile formats allow the displays to be used interchangeably as a Primary Flight Display, MFD or EICAS display
• Larger display size, 6 x 7 or 7 x 7, enhances crew efficiency and situational awareness
• Primary Flight Display format includes: attitude, airspeed, vertical speed and navigation plus TCAS resolution advisories
• Multifunction Display format includes: navigation maps, weather radar, TCAS traffic and aircraft maintenance data
• EICAS format includes: critical engine and system status data recording and display as needed
• Compatible with EPGWS, which utilizes GPSs and on-board global terrain databases to provide pilots with a picture of the terrain in front of them

The Collins EFD-4000 Electronic Flight Display product family provides high quality 7 x 6 EFD-4076 and 7 x 7 EFD-4077 integrated display units. The EFD-4000 utilizes very large scale integration packaging techniques to combine the symbol generator and the CRT into a single display unit.

The EFD-4000 operational definition can be broken down into two distinct functions, Electronic Flight Instruments System (EFIS) and Engine Indication and Crew Alerting System (EICAS).

• Pilot PFD Primary Flight Display
• Pilot MFD Multifunction Display
• Pilot DCP-4000 Display Control Panel
• Copilot PFD
• Copilot MFD
• Copilot DCP-4000

The pilot PFD displays attitude, lateral navigation/compass, flight control and primary air data (altitude/airspeed/vertical speed) functions. The PFD receives data bus inputs from input/output concentrators, Integrated Avionics Processing System (IAPS), Traffic Alert Collision Avoidance System (TCAS) receiver/transmitter, inertial reference units and air data system. The PFD provides a data bus output to the IAPS and pilot DCP.

The pilot MFD displays lateral navigation/compass, radar, TCAS, flight management (map/summary) and diagnostic information. The MFD also provides a reversion backup for the left side PFD or the EICAS if that display fails. The MFD receives the same data bus inputs that are applied to the left side PFD. It also receives input buses from weather radar, EICAS control panel, EICAS Data Concentrator Units (DCUs), Maintenance Diagnostic Computer (MDC) and Flight Management Computer (FMC). The MFD provides a data bus output to the IAPS and pilot DCP.

The pilot DCP-4000 controls the left side PFD and MFD displays. This panel selects display formats and left side lateral navigation parameter/sources. The DCP receives data bus inputs from the left side PFD, MFD and weather radar panel. The DCP switch data and the weather radar control panel data are output to the on-side and cross-side PFDs and MFDs.

The left side display reversion switch allows the pilot to select PFD or EICAS backup display on the pilot MFD. Remote reversion switches allow the pilot or copilot to select either Attitude Heading Reference System (AHRS), DCP and air data source inputs. The remote maintenance switch selects the maintenance display on the MFD 1 or MFD 2.

The copilot PFD displays attitude, lateral navigation/compass, flight control and primary air data (altitude/airspeed/vertical speed) functions. The PFD receives data bus inputs from input/output concentrators, TCAS receiver/transmitter, IRS and ADS. The PFD provides a data bus output to the IAPS and copilot DCP. The copilot MFD displays lateral navigation/compass, radar, TCAS, flight management (map/summary) and diagnostic information. The MFD also provides a reversion backup for the right side PFD or the EICAS if that display fails. The MFD receives the same data bus inputs that are applied to the right side PFD. It also receives input buses from weather radar, EICAS control panel, EICAS DCUs, MDC and FMC. The MFD provides a data bus output to the IAPS and copilot DCP.

The copilot DCP-4000 controls the right side PFD and MFD displays. This panel selects display formats and right side lateral navigation parameter/sources. The DCP receives data bus inputs from the right side PFD, MFD and weather radar panel. The DCP switch data and the weather radar control panel data are output to the on-side and cross-side PFDs and MFDs.

• Pilot Primary EICAS Display ED-1
• Copilot Secondary ED-2
• ECP-4000 EICAS Control Panel
• Pilot DCU-4000 EICAS
• Copilot DCU-4000 EICAS
• Optional third DCU-4000 EICAS DCP
• LDU-4000 Lamp Driver Unit
• Pilot ERU-4000 EICAS Routing Unit
• Copilot ERU-4000

The primary EICAS (ED-1) displays the primary engine indication instruments and crew alerting messages. The primary display is a fixed format of engine, oil, fuel and gear data. The left side ED receives data bus inputs from the EICAS DCUs and EICAS control panel. The left side ED provides a data bus output to the IAPS data concentrators.

The secondary EICAS (ED-2) displays various data pages and serves as a backup to the primary display. The pages are selected using the ECP-4000. The right side ED receives data bus inputs from the EICAS DCUs and EICAS control panel. The right side ED provides a data bus output to the IAPS data concentrators.

A remote EICAS reversion switch allows the pilot or copilot to select either display. Selecting one display blanks the other tube and allows data pages to be selected on the remaining display using the ECP panel.

The ECP-4000 is used to select the EICAS data page displays. The panel pushbuttons select data pages. The ECP applies this information on the data buses to both EICAS displays and both MFDs.

The pilot DCU-4000 collects and formats aircraft data for display on the EICAS. The DCU performs the flight data acquisition functions for the flight data recorder. The crew alerting logic is processed in the DCU. The DCU receives high- and low-speed ARINC 429 buses, analog inputs and discrete inputs from the engines and other aircraft systems. The data inputs are concentrated and processed for transmission on ARINC 429 buses. The DCU outputs engine data to the displays; maintenance, diagnostic and aircraft data to the IAPS data concentrators; annunciator lamp data to the Lamp Driver Unit; aircraft system data to the flight data recorder and data link management unit.

The copilot DCU-4000 collects and formats aircraft data for display on the EICAS. The DCU performs the flight data acquisition functions for the flight data recorder. The crew alerting logic is processed in the DCU. The DCU receives high- and low-speed ARINC 429 buses, analog inputs and discrete inputs from the engines and other aircraft systems. The data inputs are concentrated and processed for transmission on ARINC 429 buses. The DCU outputs engine data to the displays; maintenance, diagnostic and aircraft data to the IAPS data concentrators; annunciator lamp data to the LDU; aircraft system data to the flight data recorder; and data link management unit.

The optional DCU-4000 performs the same functions as described.

The LDU-4000 is a dual-channel lamp driver unit capable of driving up to 120 annunciator lamps. Channels 1 and 2 receive digital buses from all the DCUs. The buses contain lamp activation words from the DCUs. Channels 1 and 2 are identical and the outputs from each side are tied together (OR logic). If one channel lamp sink fails, the other channel lamp sink will provide the annunciator function. The LDU monitors the lamp sinks to verify correct function and outputs the lamp sink states on a digital bus to the DCUs.

The ERU-4000 are junction boxes for the DCUs. The ERU splits each input signal to three output pins. The pilot ERU routes left side airplane data and the copilot ERU routes right side airplane data.