ATR 42-300
AIRCRAFT HANDLING MANUAL
AIRCRAFT SERVICING
CAUTIONS :
When using a mobile GPU, check voltage and frequency to be within limits. Voltage
below or above specified limits may cause damage to aircraft electrical equipment.
A mobile GPU must never be left connected to a tractor when the GPU power cable
is connected to an aircraft. This to avoid damage to the GPU and/or the aircraft if the
tractor is moved.
When using a combustion engine driven GPU, make sure a hand fire extinguisher of
suitable size and type is mounted externally on the GPU, or is available in close
vicinity to the GPU. The fire extinguisher shall be sealed and date labeled.
This is an illustration of the AC External Power receptacle panel
1
– Nose Landing Gear Service Light Switch: allows operation of the service light in nose gear bay.
2
– “AC Power not used” light (white): is ON when AC external power is connected and AC External
Power Contactor is opened.
3
– “AC Connected” light (white): is ON when AC external power is connected.
This is an illustration of the DC External Power receptacle panel
1
– “DC connected” light (white): is on when DC external power is connected to the aircraft.