TOMARK, s.r.o.
Airplane Maintenance Manual
Chapter 05 Inspection and Maintenance
Page 64
Issue: 04.APR 2016
Fuel Pressure Indication
Check the functioning of the fuel pressure indication on EMS display
by switching electric pump ON/OFF. Fuel pressure indication should
remain green in colour.
Oil Pressure and Temperature Indication
Check the functioning of the oil pressure and oil temperature
indication on the EMS display. Idle RPM will reduce the oil pressure
and increasing power settings will increase the pressure. Indication
should follow instantaneously.
Verify in stabilized full throttle climb flight at 65 KIAS that the
temperature remains within limits.
CHT Indication
Check the functioning of the CHT indication on the EMS display by
changing the throttle setting. In idle conditions the CHT of the various
cylinders will have a higher spread, in stabilized conditions above
4000RPM the difference between the two EGT signals should be no
more than 20 °C.
05-21-28 Other Instruments
Fuel Quantity Indicator
Check the functioning of the fuel quantity indicator by monitoring the
indication during the flight. During the flight the indication should
become less according the amount burned. The indication is only
accurate in horizontal flight; however the indication should be
independent of the airspeed. Changing indication with changing
speed gives reason to suspect a problem with the fuel ventilation and
should be investigated immediately.
Do not read the indicator in a turn, sideslip, steep climb or descent.
Volt/Amp Meter
Check the functioning of the volt/amp meter by switching MASTER
and INSTRUMENT on and electric consumers (lights) on prior to
engine start. The battery should be sufficient to maintain a Voltage