Systems Guide

Aerosoft
Twin Otter E
XTENDED
Systems
Vol
2
2-1-10
19 November 2013
• RESET: when the generator drops offline (due to under voltage or over voltage) the RESET position
must be held shortly before reconnecting. Do not try to reconnect more the two times!
GENERATOR CAUTION LIGHTS
The generator caution lights on the caution panel will illuminate when the generator is offline. Left light is
powered from right bus, right light is powered from left bus.
GENERATOR OVERHEAT CAUTION LIGHTS
The generator overheat caution lights on the caution panel (optional) indicate an overheat condition. Left light
is powered from right bus, right light is powered from left bus.
BATTERY
The 40-ampere-hour nickel cadmium battery is located beneath the aft baggage compartment. An auxiliary 3.6
ampere-hour battery is used by the starting and ignition phases.
BATTERY TEMPERATURE MONITOR
The battery temperature is monitored using a temperature gauge and a caution light that will illuminate at
150°. A test button will simulate an overheat condition to test the gauge and light.
DC VOLTMETER & DC LOADMETER
The dc voltmeter is located on the front panel (next to the emergency panel) and will show the voltage of the
left /right generator and the battery depending on the switch. The loadmeter indicates the charge or discharge
of the battery or the load on the generators.
INVERTERS
Two 400 cycle, single-phase static inverters provide 115 and 26 volt. They have an approximate similar
operational use and should be alternated between flights using the two position inverter switch. The non-
active inverter is the available in case the active one fails. The 400 CYCLE caution light will indicate a failed
inverted.
CAUTION LIGHTS PANEL
The 18 lights of the caution panel alert the crew of problems or system configurations. A three positioned
switch allows the panel to be set to a bright or dimmed light level and to test all lights.
Left/Right Generator
Indicates incorrect voltage or generator
being offline
Attempt two resets, when no
result switch generator off
Left/Right Generator
Overheat
Not simulated
Pneumatics Low Press
Indicates deicing and autopilot bleed-air
below 14 psi
Shut off heating, increase power
to >70%, check bleed air
switches.
Reset Props
Indicates propeller levers not at full
increase when power is below 75%
Advance propeller to full
increase in on final approach
Duct Overheat
Not simulated
Doors Unlocked
Indicates any door being open
Left/Right Oil Pressure Indicates oil pressure under 40 psi
Shut down engine as soon as
possible