Adiru PAnel

ADIRU Panel

IR buttons

Normal operation.

In/On

Inertial Outputs suspended.

Out/Off

Steady .... Complete loss of IR unit.

Flashing .... Attitude and/or Heading data lost. Possibly remedied by switching to ATT

FAULT

IR unit disconnected

OFF

AD buttons

Normal operation.

In/On

Inertial Outputs suspended.

Out/Off

Error detected in AD part

FAULT

AD unit disconnected

OFF

Battery Light

Illuminates when any ADIRU is powered by aircraft’s batteries only

ON BAT

Illuminates briefly when IR Unit initially starts aligning. That is the knob selected to NAV

ADIRU Knobs

ADIRU is not powered. No IR or AD information is available

OFF

Normal operation the unit supplies all necessary information for navigation.

NAV

IR unit supplies only Attitude and Heading information. The unit is unable to supply any navigation information.

ATT

The Air Data (AD) Inertial Reference Unit (IRU) system (ADIRU) control panel is located at the top of the overhead

The ADIRU supplies all the necessary information to the displays, FMGS, and other systems to navigate the aircraft.

There are 3 separate ADIRU systems, IR/AD 1 , IR/AD2, IR/AD 3