ALIGN ANNUNCIATOR SWITCH (momentary action)

PUSH - key bar segment (amber) initiates alignment mode on the ground or inflight

• EADI shows an ALIGNING message which appears in yellow that flashes for five seconds and then changes to steady
• the aeroplane must be in a straight and level attitude when making an alignment mode selection in flight
• the alignment mode continues for 60 seconds on the ground and 90 seconds in flight
• the AHRS parameters are available 20 seconds after starting the alignment mode
• the align message will appear during the align period in the PFD (ADI)

BASIC ANNUNCIATOR LIGHT (green)

• comes on to show the automatic reversion to the Basic mode if the TAS parameter is not available from either ADCS
• no additional indications appear on the EADI

SLAVE ANNUNCIATOR LIGHT (red)

• comes on to show a flux valve (MDU 1, MDU 2) malfunction
• the EHSI is replaced by a red HDG FAIL message inside a white circle

DG ANNUNCIATOR SWITCH (momentary action)

PUSH - key bar segment (green)