ENSTROM 480B RFM SUPPLEMENT
7-5
Rev. 1
Report No. 28-AC-049
Nov 12/14
6. Power to the SN3500 system is provided via the
avionics master switch (
AVI MSTR). Power to the SN3500
is provided via the
EHSI circuit breaker (5 Amp). Power to
the SG102 and MT102 is provided via the
AHRS circuit
breaker (5 Amp) located on the left side of the lower panel.
Table 7-1. Sample Indicator Symbols and Color
Descriptions
Lubber Line – Points to the magnetic heading.
It is always at the top of the display.
Heading Bug
– Identifies the desired heading
and is set by the Heading Bug knob.
Course Pointer – Identifies the desired course
to a VOR NAV source and is set by the Course
Pointer knob.
BRG1
BRG2
Bearing Pointers 1 and 2 – These pointers
show the bearing to a VOR. Numeric
information assigned with the pointers is
displayed in the lower display area. BRG1
symbol is a closed arrow head. BRG2 symbol is
an open arrow head. Note: Bearing pointer tails
are 180° from the arrow head. The tail of BRG1
is a single line and the tail of BRG2 is a double
line.
Back Course – Appears if flying a back course
approach and the course pointer is set for a
front course, and the course pointer is more
than ±90° from the lubber line.
White
Compass rose, To/From indicator, ACK soft-key
Orange
Heading bug data
Green
Navigation receiver data
Red
Flags indicating failed glide slope or CDI data
Amber
Compass rose when AHRS has failed
Magenta LOC1/ILS1 (CDI and VDI) indicators
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