Revision: 4
Date:
09/08/20
RV-12iS Flight Training Supplement
6-1
SECTION VI
INSTRUMENTATION, AVIONICS, & ELECTRICAL SYSTEM
INDEX
GENERAL
6-1
RV-12iS ELECTRICAL SYSTEM THEORY
6-1
ELECTRICAL SWITCHES
6-3
DYNON SKYVIEW
6-10
FUSES
6-9
GARMIN GTR 200 COMM RADIO
6-10
ELT
6-10
GENERAL
This section covers all the items in the instrument panel, switches and fuses, as well as installed instrumentation,
avionics (G3X, Skyview, GTR 200) and ELT.
CAUTION
Please pay attention to the operation manuals for each piece of equipment. Preparing by studying the basic
operation of this equipment prior to your first transition training flight will be time well spent and helps ensure
safe operation. Do not attempt to learn the basics of these systems while flying the aircraft for the first time.
As you read this section, please reference the electrical systems schematics found in POH Section 7.
RV-12iS ELECTRICAL SYSTEM THEORY
The RV-12iS electrical system is designed to minimize the workload of the pilot while keeping cost and weight to
reasonable minimums.
Items essential for basic operation of the aircraft are either provided with their own internal batteries (as is the case for
the EFIS) or are powered-on any time the master switch is on (as is the case for the stall warning system, flaps, pitch
trim motor and avionics cooling fans).
Fuses are used for protection of the various electrical circuits resulting in lower cost and weight with no adverse effect
on safety or functionality. All fuses 3A and above are provided with LED "trip" indicators. Through use of non-resettable
fuses, safety is enhanced because the pilot is not able to override the protection of the circuit (as would be the case with
a resettable breaker) and his/her attention is fully directed toward flying the aircraft rather than being tempted to "fix"
something in flight. Consider that if a fault develops in any circuit, there is nothing constructive that the pilot can do
except fly the aircraft to a safe landing before trying to troubleshoot any electrical problem.
The electrical system design incorporates a separate avionics master switch. With this design, in the event of a
generator failure non-essential electrical equipment can be taken off-line while continuing to allow the EFIS(s) and
associated accessories to be powered by the main battery and EFIS backup battery.
This design preserves the electrical energy stored in the battery to keep the trim motor, flaps, electric fuel pumps, and
avionics cooling fans operating long enough to allow a precautionary landing diversion to be planned and the flight to be
completed.
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