3
Functional Check of the ADAHRS
Note
Do this procedure when an ADAHRS unit is replaced.
3.1
Do a test of the altitude and vertical speed indication:
−
For non-RVSM aircraft, refer to AMM 12-B-34-14-00-00A-903A-A
−
For RVSM aircraft, refer to AMM 12-B-34-14-00-00A-903B-A.
3.2
Do a test of the airspeed indication, refer to AMM 12-B-34-16-00-00A-903A-A.
3.3
Do an Operation test of the ADAHRS source select switching, refer to AMM 12-B-46-30-02-00A-903A-
A.
4
Alignment Check of the ADAHRS
Note
When a magnetometer or ADAHRS is replaced you must do this procedure. The ADAHRS and
magnetometer alignment offset values are recorded in the aircraft ADAHRS Set Up document.
4.1
Open these circuit breakers:
−
ADAHRS CH A (ESSENTIAL BUS)
−
ADAHRS CH B (MAIN BUS).
4.2
Connect the Maintenance box (Pt.No. T45-005) to the Maintenance Panel.
4.3
Use a Sub-D cable (Pt.No. T34-050) to connect a Laptop computer (Pt.No. Local supply) to the
Maintenance box (Pt.No. T45-005) J1 connector.
4.4
Close these circuit breakers:
−
ADAHRS CH A (ESSENTIAL BUS)
−
ADAHRS CH B (MAIN BUS).
4.5
Energize the aircraft electrical system, refer to AMM 12-B-24-00-00-00A-901A-A.
4.6
Wait two minutes after the ADAHRS self test to let the ADAHRS unit warm up.
4.7
START the KSG 7200 Field Maintenance Program on the laptop computer.
4.8
Select the appropriate COMM port on the laptop computer, then click on the START MAINTENANCE
button.
Note
If the software cannot establish communication between the ADAHRS and the laptop computer, the
screen will show a box "Maintenance Mode Operation Not Allowed". If you see this, make sure that the
Sub-D cable is connected and that the correct COMM Port is set on the laptop computer.
4.9
Make sure the laptop computer screen shows the CHOOSE ITEM TO VIEW screen.
4.10
Click the BUILT IN TEST RESULTS button to show the BITE test results screen.
4.11
Make sure that the BITE test results are as follows:
MC565 Processor Fault
Passed
Unknown Watchdog Reset
Passed
Watchdog Test
Passed
RAM Test
Passed
RS232 Loopback Test
Passed
PC-12/47E AMM Doc No 02300, ISSUE 01 REVISION 26 MSN 545, 1001-1719,
1721-1999
12-B-AM-00-00-00-I
UNCLASSIFIED
Effectivity: All
12-B-34-25-00-00A-903A-A
UNCLASSIFIED
2021-12-04 Page 5
