Van's Aircraft RV 12iS, Дополнение к руководству по летной подготовке

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Revision: 4 Date:
09/08/20
RV-12iS Flight Training Supplement 6-4
IGNITION SWITCHES:
Rotax 912ULS: Each switch controls one of the two electronic ignition modules on the engine.
Rotax 912iS: Each switch controls one of the two engine computers (Lane A and Lane B). (Further explanation
is provided in the
“Understanding the 912 iS” section below).
It should be noted that when each Lane switch is turned, on the corresponding fault light will turn on. This
indicates the l\Lane computer is booting and not yet fully functional, and will turn off after about 3 seconds.
During the Before Takeoff Run Up checks (See POH 4.7) note that after checking Lane A the POH instructs
that the pilot should wait for the Lane A Fault light to extinguish before checking Lane B. This allows Lane A to
reboot before Lane B is taken offline during the checks. You can quickly check Lane B without waiting for the
Lane A fault light to go out, but shutting off the Lane B computer with the Lane A computer partially functional
will place a fault error code in the electronic maintenance log of the engine. For that reason and to ensure a
complete check, ensure the fault light for any Lane is extinguished before shutting off the other Lane switch
during run-up tests.
All the critical functions of each Lane computer are duplicated in both computers (in case one computer would
fail, the other can assume control of critical functions). Sensors that are only connected to one computer are not
duplicated and will not display if a computer should fail or a Lane switch is turned off.
NOTE
LANE A and LANE B have different sensor inputs. During LANE and IGNITION checks, some sensor
values are not displayed, depending on the activation state of the LANES.
Unavailable sensor values if LANE A = OFF and LANE B = ON:
•
Coolant temperature
•
Exhaust gas temperatures
•
Ambient temperature
•
Ambient pressure
•
Throttle lever position
Unavailable sensor values if LANE B = OFF and LANE A = ON:
•
Oil temperature
•
Oil pressure
EFIS BACKUP BATTERY SWITCH: Note: This switch is only used on a Garmin system. The Dynon backup battery
function is automatically controlled by the EFIS.
This switch has two positions
“ON” and “MATER SWITCH DEPENDENT.”
In the “ON” position the backup battery is connected to the dedicated backup battery inputs on the Garmin EFIS and
critical modules (LRU’s) connected to the EFIS. The “ON” position should only be used to power the EFIS in an
emergency if the Master Switch is turned off in flight (for example in case of an electrical fire).
For normal operations the switch should be left in the “MASTER SWITCH DEPENDENT” position. In this switch position
the EFIS backup battery will become active when the Master Switch is turned on. If the main bus voltage should fall
below the minimum voltage requirements for the EFIS and associated critical LRU’s the EFIS backup battery will
continue to power the EFIS units.
ELT REMOTE: The ELT remote
switch has on “ON” switch that should be activated in an emergency and a test switch
that may be used during the first 5 mins of every hour to test the function of the ELT.
AVIONICS SWITCH: This switch controls power to the transponder and the installed COM radio.