GARMIN International, Inc.
9875 Widmer Road
Lenexa, KS 66215 U.S.A.
FAA APPROVED AIRPLANE FLIGHT MANUAL SUPPLEMENT
GARMIN GNC300 VHF COMMUNICATION TRANSCEIVER / GPS RECEIVER
FAA APPROVED 190-00067-03 Rev. A
DATE: 10/16/95 Page 9 of 16
NOTE: It is important to verify/enter the altimeter setting
at the destination airport. This setting is used to calibrate
pressure altitude when the GNC300 is navigating in the
approach mode and will directly affect the unit’s
capability to provide accurate navigation guidance.
(c) When approach mode is available and the aircraft is within 30 nm of the
destination airport, the GPS APR (GPS Approach) annunciator will indicate
ARM, and the GNC300 will provide a smooth CDI scaling transition from
5.0 nautical miles full scale to 1.0 nautical mile full scale. In addition, the
GNC300 will perform receiver autonomous integrity monitoring with a
protection limit of 1.0 nautical mile. When approach mode is available and
armed, the pilot may at any time deactivate the approach mode by pressing
the GPS APR (GPS Approach) Switch on the annunciator unit. Pressing the
GPS APR switch a second time will re-arm approach mode.
(d) If the aircraft is within 3.0 nautical miles inbound to the FAF and the pilot
has deactivated the approach mode with the GPS APR Switch, the message
"Arm Approach Mode" will be displayed. Pressing the GPS APR switch will
re-arm the approach mode.
(e) When the GNC 300 approach mode has been armed (ARM annunciator
illuminated), the GPS SEQ switch has been set to AUTO, and the aircraft is
within 2.0 nautical miles of the FAF, the ACTV (Active) annunciator will be
illuminated and the CDI scale sensitivity will start to change from 1.0 nautical
mile full scale to 0.3 nautical mile full scale. In addition, the GNC300 will
perform receiver autonomous integrity monitoring with a protection limit of
0.3 nautical mile.
