ADIRU

Question 1

Provides the following data

Answer 1

Speed
Altitude
Flight displays
FMC
FC
EC
And other systems that require inertial or air data

Question 2

ADIRS

Answer 2

AIR DATA MODULE
ADIRU
SECONDARY ATTITUDE AIR DATA REFERENCE UNIT

Question 3

Air data modules

Answer 3

Remote sensors which electronically supply pitot and static pressure information to the flight controls data bus

Question 4

ADM receive and process data from

Answer 4

3 pitot probes

6 static ports, 2 per module

Question 5

SAARU

Answer 5

If ADIRU is lost the SAARU kicks in and will provide altitude, airspeed and pitch information but the FMC route map will be lost if GPS data is not available

Question 6

NAV ADIRU INERTIAL MSG

Answer 6

No 
Inertial navigation
Attitude
Heading
Track 
Ground speed
On the ND the GPS nav tracks will be dispalyed
But HDG ref will be lost after 3 minutes