G1000 Nav III Line Maintenance Manual
Page 5-3
190-00352-00
Rev.
L
5.4
AHRS/Air Data Backup Path Test
Step Desired
Result
Secondary AHRS/ADC path check:
1.
Remove power from PFD.
2.
Remove power from GIA2.
3.
Check for desired results.
4.
Restore power to the PFD and GIA2.
The following shall occur on the MFD when power is
removed from the PFD and GIA2:
⎫
MFD switches to reversion mode.
⎫
Attitude and Heading remain valid from AHRS.
⎫
Airspeed, Altitude, Vertical Speed, and OAT
remain valid from Air Data Computer.
⎫
Engine Instrumentation flags invalid.
⎫
All COM & NAV fields flag invalid.
5.5
Flight Test
A flight test is recommended after installation is complete to ensure satisfactory performance of G1000.
5.5.1
VHF COM Tests
To check the communications transceivers, maintain an appropriate altitude and contact a ground station facility
at a range of at least 50 nautical miles. Contact a ground station that is in close proximity. Press the squelch
disable button to defeat the automatic squelch feature and listen for any unusual electrical noise that would
increase the squelch threshold. If possible, verify the communications capability on both the high and low ends of
the VFH COM spectrum. It may be required by the governing regulatory agency to verify operation of the COM
transmitter and receiver at the extents of the ground facility’s service volume. (FAA AC 23-8A)
5.5.2
VOR/ILS Tests
Select a VOR channel within a 40 nautical mile range. Listen to the VOR audio and verify that no electrical
interference such as magneto noise is present. Check the tone identifier filter operation. Fly inbound or outbound
on a selected VOR radial and check for proper LEFT/RIGHT, TO/FROM flag indications on the CDI. Check the
VOR accuracy. It may be required by the governing regulatory agency to verify operation of the VOR receiver at
the extents of a ground facility’s service volume. (FAA AC 23-8A)
Содержание G1000 NAV III
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