Airplane Factory SLING 4
Pilot Operating Handbook
Page | 4-13
DC-POH-001-X-C-3
Revision : 1.3
4.5.3
Engine warm up, engine check
Prior to an engine check, block the main wheels with wheel chocks or
ensure that the brake is firmly on.
Initial engine warm-up is at 2 000 rpm for approximately 2 minutes,
then increase to 2 500 rpm until the oil temperature reaches 50 °C
(122 °F). The warm-up period depends on the ambient air
temperature.
Check both ignition circuits at 4 000 rpm. The engine speed drop when
either ignition circuit is switched off should not exceed 300 rpm. The
maximum engine speed reduction (drop) difference between magnetos
/ ignition circuits should not exceed 115 rpm.
Set maximum power for the verification of maximum speed with given
propeller and engine parameters (temperatures and pressures).
Verify engine acceleration from idle to maximum power.
If necessary, cool the engine (for approximately 3 minutes) at 3 000
rpm before shutdown.
NOTE
Only one magneto / ignition circuit (at a time) should be
switched on/off during an ignition/magneto check.
CAUTION
The engine check should be performed with the aircraft heading
upwind and not on loose terrain (the propeller may disturb grit
which can damage the leading edges of blades).
Содержание SLING 4
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