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ADS
Air data system
5 ADSs, of which 3 are available to the pilots, provide:
- primary air data information to PFDs
- flight controls
- other avionics
ADS 1 → Captain's PFD
ADS 2 → First Officer's PFD
ADS 3 → Used in reversion
ADS 4 → IESS
ADS 5 → FCM
After a failure, the failed side automatically reverts to ADS 3. In this case, ADC3 is displayed in amber on the PFD.
| Normal | 1st Reversion | 2nd Reversion | |
| Captain | ADS 1 | ADS 3 | ADS 2 |
| First Officer | ADS 2 | ADS 3 | ADS 1 |
Air data information is also displayed on the upper right of the MFD in flight.
EICAS messages
ADS 1/2/3 FAIL
See also
Categories: Embraer 170/190 | Flight Instruments/Comm/Nav/FMS