A320 SWITCHING PANEL
ATT HDG Selector
- NORM: IR 1 supplies data to PFD 1 ND 1, and Digital Distance and Radio Magnetic Indicator (DDRMI)/VOR DME. IR 2 supplies data to PFD 2 and ND 2.
- CAPT 3: IR 3 replaces IR 1 and supplies data to PFD 1, ND 1, and DDRMI/VOR DME.
- F/O 3: IR 3 replaces IR 2 and supplies data to PFD 2 and ND 2.
AIR DATA Selector
- NORM: ADR 1 supplies data to PFD 1 and ND 1. ADR 2 supplies data to PFD 2 and ND 2.
- CAPT 3: ADR 3 replaces ADR 1 and supplies data to PFD 1, and ND 1.
- F/O 3: ADR 3 replaces ADR 2 and supplies data to PFD 2 and ND 2.
EIS DMC Selector
- NORM: DMC 1 supplies data to PFD 1, ND 1, and the upper ECAM DU. DMC 2 supplies data to PFD 2, ND 2, and the lower ECAM DU.
- CAPT 3: DMC 3 replaces DMC 1.
- F/O 3: DMC 3 replaces DMC 2.
Note: If a DMC fails, each of its associated DUs displays an “INVALID DATA” message.
ECAM/ND XFR Selector
- NORM: The System Display (SD) appears on lower ECAM.
- CAPT: Transfers the System Display to Captain’s ND.
- F/O: Transfers the System Display to First Officer’s ND.