FLIGHT MANUAL
DYNALI HELICOPTER COMPANY
Edition N°3
DYNALI H2S January 2012
__________________________________________________________________________________
5
fixed wing aircraft which will still be provided with thrust for a moment by its propeller. The
governor system may hide the early stages of icing.
PRINCIPAL CAUSES OF ACCIDENTS IN LIGHT HELICOPTERS
- Over-confidence of pilots with great experience on other types and who believe, wrongly,
that a light helicopter is a very forgiving machine.
- Insufficient awareness of the limitations of the machine.
- Flare-out at too low altitude (engine failure or in training).
- Transition phase with the helicopter : impossibility of lateral correction and prevention of
lateral rollover. Dynamic rollover can sneak up on you.
- Loss of rotor RPM in the event of failure of governor.
PRIMARY SAFETY RECOMMENDATIONS
In the event of a risk of overturning on the ground (dynamic rollover) lower
immediately the collective control and also press down the pedal on the side of the
tipping.
Stabilise hover at 3ft prior to departure (hover recommended at between 3ft and
3,5ftm)
Best flight conditions are above VPM and at sufficient altitude.
Cruise above 1000ft.
Speed both in climb and cruise at over 60kts (always above VPM).
In the event of a reduction in rotor RPM, lower the collective immediately and
increase fuel-flow.
Auto-rotation training should be undertaken over a known surface and under
favourable conditions, mass, light headwind, temperature.
If you are flying solo (and unless you are undergoing instruction by a Dynali H2S
qualified instructor), limit autorotation exercises and open the throttle at 150ft. Avoid
sudden inputs to the controls.
Sufficient power while flying at a high altitude.
PILOT CODE
Keep both hands on the controls especially when close to the ground, (it is prohibited
to release the collective control and even more so the cyclic stick when in immediate
proximity to the ground).
Concentrate ! Be attentive at all times as nothing is ever sure. Beware of over
confidence.
Never fly if you are not feeling in perfect shape. In no case fly when you are
influenced by alcohol, lack of sleep or stress…
Danger if there
ʼ
s an obligation to fly, demonstration flights, obligation to go from point
A to point B, flying through bad weather.
Pre-flight check and check out (always conduct these vital procedures with the
greatest rigour).
No risky flying ! Machine in perfect condition, engine idling smooth. At the slightest
unusual noise or vibration or any other doubt, interrupt the start-up procedure and
check.
No risky or unusual manoeuvres.
