FLIGHT MANUAL
DYNALI HELICOPTER COMPANY
Edition N°3
DYNALI H2S January 2012
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31
3.5.
ENGINE FAILURE AT LOW ALTITUDE AND LOW SPEED
If the Quick Stop is no longer possible, make a sliding landing :
•
Left pedal down
•
Above 1,5m (5ft), slightly lower the collective
•
Below 1,5m (5ft), do not lower the collective
•
Measured use of collective to cushion the contact with the ground.
3.6.
GOVERNOR FAILURE
If the governor fails in flight, manually control the engine revs and reach a landing site
making an approach at a normal angle of descent.
The throttle control must be handled to ensure maximum power and RPM.
The co-relation throttle/pitch is not efficient enough at high altitude and great attention should
be paid to reducing throttle at the moment when the collective is lowered in order to avoid
excess engine speed.
Note : The H2S is equipped with a limiter for high motor RPM. Do not hesitate to give full
throttle if you are worried about the governor failure which has just occurred as, by doing this,
you will retain:
•
full power
•
rotor RPM
The only inconvenience of this is that the noise of the high RPM setting is characteristic as it
is linked to the injection system which, in this precise case de-synchronises the ignition which
gives the impression of miss-firing in the engine while actually providing maximum power.
3.7.
BEST AERODYNAMIC EFFICIENCY IN AUTO-ROTATION
•
Speed, around 110 km/h - 60 kts
•
Rotor revs, around 95%.
3.8.
ENGINE RE-START PROCEDURE
•
Throttle to idle.
•
Governor OFF.
•
Start with left hand
.
! DO NOT ATTEMPT RE-START IF ENGINE MISFUNCTION IS SUSPECTED OR WHEN
SAFE AUTO-ROTATION HAS NOT BEEN ESTABLISHED.
3.9.
FORCED DITCHING WITHOUT POWER
•
Auto-rotation procedure until contact with the water.
•
Turn helicopter onto left side on contact with water in order to stop the rear
rotor.
