[EMB] 申请加精  E190飞机排故经验（很实用很重要的资料）

Embraer Technical Support – Commercial Aviation
RTS – Return to Service Team
OBJECTIVE
Aircraft Main Systems overview
Troubleshooting of AOG cases
Aircraft Files Analysis
CMC review pages
Troubleshooting Maintenance Tips
AHEAD System Overview

Avionics and Electrical System
Avionics System
1. Avionics System Archtecture
The Avionics System used on our EJETS is the Honeywell Primary EPIC which basically consists on Cabin Displays Controls, Communication Systems, Sensors and Actuators Peripheries all of them controlled by the three MAU’s (Modular Avionics Unit).The Avionics System Architecture is composed by three MAU’s beeing 2 located on foward eletronic bay e 1 located on middle eletronic bay.
The main MAU cards are:
- NIC/PROC  This is a double card which has the most important function on the avionics system
NIC Card: The NIC card has a function to manage all information (input and output) through the ASCB and LAN Bus, monitors the MAU Power Supply and FAN conditions, check the MAU Channel configuration and PROC Card: It is a Processor Card which host multiply functions.
- Generic I/O  Translate the general data from inside and outside of the ASCB Bus
- Control I/O  Translate the general data from inside and outside of the ASCB Bus,however are specialized in specific control interfaces such as Display Controls, MCDU.This card still has the specific softwares and two drivers of Aural Warning.
- Custom I/O  Translate the data from inside and outside of the ASCB Bus however it is interface are more specialized such as Flight Data Recorder (ARINC 717) and others I/O that can not be translate such as LVDT’s, Pressure Transducers, Temperature Sensors and others.
- Power Supply  Supply DC Electrical feed (28VDC) to each MAU channel
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AHEAD Requirements
On the aircraft side:
- At least one CMF (Communications Management Function);
- Coded Report downlink enabled on the CMC (Central Maintenance Computer);
- Central Maintenance Computer module part number -1902;
- Primus EPIC updated to load 19-170 or 19-190, respectively, for the E-170 or E-190;
- Parameter “additionalMaintenanceOptions” enabled in APM Options file (via SB).
On the airline side:
- ACARS provider able to deliver reports to Embraer FTP site;
- Flyembraer access to Technical Publications;
- PC with web browser and permanent Internet connection.
Steps required to activate AHEAD:
- Follow the Technical Implementation Check List (TIC).