User manual

DodoSim 206 FSX User Manual

Page 24

battery power must be of sufficient voltage.

3.3.3.3 The Overhead Panel

Located in the ceiling between the pilot and front passenger seats, the overhead panel contains the

circuit breakers and sub-systems switches, which isolate aircraft electrical systems from the battery

and generator electrical buses:

1. Aft Fuel Pump – This circuit breaker (CB) isolates the fuel pump in the rear of the fuel tank

from electrical power when pulled out.

2. Fore Fuel Pump – This CB isolates the fuel pump in the front of the fuel tank from electrical

power when pulled out.

Pilot Information: Note that both fuel pumps should be used at all times. At pressure

altitudes above 6000’ MSL, fuel pressure may be lost, leading to engine fuel starvation

without the use of either or both fuel pumps. Should a fuel pump fail, the pilot should

descend to below 6000’ as soon as possible in case the second pump or the whole

electrical system were to fail and fuel pressure lost. Likewise, should the generator fail, the

pilot should also descend to below 6000’ as when the battery drains low, (since it is not

being recharged), the pumps will cease to function and fuel pressure will be lost.

Should fuel pressure be lost, the engine may “flame-out” , ceasing combustion. The pilot

will then have no option but to attempt an airborne relight, or enter auto-rotation and

perform an emergency landing.

Non-use of the fuel pumps also effects the amount of usable fuel in the tank. (See the Fuel

Gauge section within the “Cockpit Instruments” section for full details.)

3. Caution Light (Annunciator) - This CB isolates the annunciator lights and both the “engine

out” siren and “rotor low RPM“ horn circuits. Pulling the breaker out will stop them

sounding and reset the trigger circuitry. I.e. If a warning is muted with the mute button, (on

the front panel), and then the CB is pulled and push back in to cycle the power, the triggers

are reset and the warnings will sound again if the conditions that first triggered them

persist.