The Light Weight Engine Houtekietstraat 11
B-8540 Deerlijk, Belgium
EFFECTIVITY
page 25
ALL
19-3-2019
Emergency Procedures
Normally the engines for Ultra-light or LSA aircraft are not certified, but also a certification does not
protect from engine failures. Please bear in mind that for any existing aircraft or any existing engine a
failure is possible. If sight of a failure is recognized before the take-off the flight has to be cancelled in
any case. In case of a failure in flight the right reaction is very important:
•
Failures indicated by the ECU
Basically there are two kinds of failures, or indicated by a clear text message (if the monitor is
installed) or by blinking, respectively constant glowing, of the LED. The first kinds of failures are
those of the sensors or deviations of the measurements, but which is not an engine failure. For
example, if the LED shows a constant glowing, the flight can continue until you reach the next
airfield or an appropriated landing area. It does not mean an immediate danger. As for the
second kind of failure, signalized by a fast blinking, this means that an emergency landing is to be
initiated immediately.
•
Loss of cooling liquid
Should your engine loose its cooling liquid during the flight (for example due a broken pipe) the
temperature will rise instantly and rapidly. An emergency landing has to be prepared
immediately. The remaining running time of the motor without cooling liquid are a few minutes,
this means that after the power setting has been reduced to idle, the remaining running time
may be used just before landing.
•
Loss of power supply
In case the on-board voltage gets too low, for example if the generator fails, the battery is not
loaded anymore. All consumers, also those required to run the engine are supplied by the
battery only. Turn off all consumers which are not absolutely required and initiate immediately
your landing on the nearest airfield. The remaining running time depends on the size and on the
loading status of the battery. If two batteries are installed having together 4.5Ah the remaining
running time will be between about 20 and 30 minutes.
•
Sensor failure
Some sensors are redundant; some values are in direct relation to other values. For example the
cooling water is measured by two sensors, one to indicate the pilot the temperature, the second
to supply the ECU. Now if the indicated temperature of the water is too high, but no warning
coms from the ECU and the oil temperature shown is within the normal range, then for sure the
sensor is damaged. Or if the oil temperature is extremely high but the water temperature and
the oil pressure are normal then probably the sensor is damaged. If seems to be likely that a
sensor failure occurred, it is not necessary to initiate an emergency landing. Land on the nearest
airfield and repair the damage.
•
Redundant systems
