- ADIRU Faults:
Notes:
- ADIRS maintenance codes show on the IRS DISPLAY of the ISDU. Some codes give the condition of ADIRS components and signals. Some codes give instructions.
- Two or more codes cause the ISDU CLR key light to come on. Push the CLR key to show the codes in sequence.
- The ADIRS maintenance codes come from the ADIRUs. Put the SYS DSPL selector in the L position to see codes from left ADIRU. The right shows codes from the right ADIRU.
- You can see the list of ADIRS maintenance codes on the MCDU. Maint/ADIRU/Maint codes.
ADIRU Fault Possible Causes:Before replacing any component perform ADIRU Bite (Maint/ADIRU/Assoc ADIRU/Current Faults).
1.ADIRU
ADIRU Faults:
Circuit Breakers:ADIRU Left (AC): P18-1 = E7.
ADIRU Left (DC): P18-1 = E5.
ADIRU Left EXC: P18-2 = E8.
ADIRU Right (AC): P6-1 = C14.
ADIRU Right (DC): P6-1 = C17.
ADIRU Right EXC: P6-1 = C15.
Applicable deferrals MEL 34-35-01 Inertial Reference System (IRS) and IRS Features
MEL 34-35-02 IRS data display on ISDU
MEL 34-49 Right IRS DC Power Supply System
- ADIRS maintenance codes show on the IRS DISPLAY of the ISDU. Some codes give the condition of ADIRS components and signals. Some codes give instructions.