7-6
ENSTROM 480B RFM SUPPLEMENT
Rev. 1
Report No. 28-AC-049
Nov 12/14
7-2. Basic Operation
The following content covers basic operational procedures.
Refer to the applicable SN3500 pilot’s guide (para. 1-2) for
additional detail regarding the SN3500 operation.
7-3. Power-Up
The SN3500 system is powered on when the avionics
master switch (
AVI MSTR) is turned ON after engine start.
The system is ready when the compass card display
appears.
7-4. NAV Source Selection
1. Press the
NAV button to cycle through the available,
primary NAV sources. The current NAV source selection
will be annunciated next to the NAV button.
a. If the selected NAV source is a VOR receiver tuned to
a localized frequency, the annunciation will be
LOC1.
b. If a valid glide slope signal is detected, the
annunciation will be ILS1.
c. Distance, bearing, and groundspeed will be
displayed in the upper display area if available.
7-5. Bearing Pointer Selection and Heading Bug Control
1. Press the
BRG button to cycle through the available
pointer selections (bearing pointer 1 only, bearing pointer
2 only, both bearing pointers 1 and 2, or disabled).
a. The arrow head (and tail) of each bearing pointer
and its associated numeric display will appear.
b. If data for the bearing pointer is invalid, “
---“ is
displayed in the numeric display and the associated
bearing pointer is removed from the screen.
This electronic document is not linked to a subscription for revision control or distribution. Refer to the Optional Equipment
Supplement Publications Status link under the Technical Support Page of the Enstrom Helicopter website for the current revision
level of this Rotorcraft Flight Manual Supplement.
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