Copyright of RotorSport UK Ltd
Document number RSUK0060
Page 30 of 101 Page issue
6
, dated
12
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4
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6
2. Oil pressure falls to zero, possible loss of pressure. Stop engine, make
precautionary landing
3. Water temp gradually or suddenly rises above max temp. Possible loss of coolant.
Stop engine, make precautionary landing
4. Oil temp suddenly falls to zero, other gauges reading normal – probable gauge
failure.
5. Oil temp rises above maximum, other gauges normal – possible very low oil level,
blocked radiator or thermostat. Stop engine, make precautionary landing.
6. Fuel level gauge suddenly falls to zero or FSD. Probable gauge failure, but always
cross check to predicted fuel burn. Low fuel light will light as a backup.
Sudden, large deflections are normally unlikely, with the exception of loss of pressure
readings.
3.13 CANOPY OPEN IN FLIGHT
The canopy is locked in place by a latch on the right of the occupants, and it must be
locked down before flight. A panel warning lamp indicates if it is unlocked, and pre rotation
is prevented if it is unlocked. If the canopy is inadvertently unlocked in flight, apply left side
slip, such that the canopy is pushed closed by the oncoming air. Slow down, and lock the
canopy. If impossible to lock, make an immediate landing at as slow a speed as is
practical, side-slipping the aircraft until straightening out for landing
3.14 LOSS OF VISION
Sudden loss of forward vision may occur through a birdstrike or unexpected canopy icing
(eg freezing rain). Immediately ensure the aircraft is in a safe attitude by reference to the
side view, using if required the emergency viewing hatch on the left of the pilot. If at a safe
height, slow the aircraft to 50mph, and, using a hand through the hatch, clear if possible
the viewing obstruction. If this is impossible, then the aircraft may be flown in a side slip to
a precautionary landing, landing as slow as possible, kicking the aircraft straight with the
rudder just before touchdown.
Make sure the area for landing is suitable for such an event, if practical extending the
landing to an airfield.
3.15 FURTHER INFORMATION (914UL)
Under MC-264/SB-073 a protection relay is introduced to provide continued electrical
supply to the P1 fuel pump in certain failure conditions.
No power in the cabin indicates either the main circuit fuse has failed, or that the battery
has failed and the pump protection relay has opened. In this case the P1 primary fuel
pump remains powered by the regulator directly, maintaining fuel supply to the engine.
The turbo control unit is not powered in this instance, and will remain in whatever position
it was in when power was lost – so mixture and manifold pressure control will be lost.
Take care to only use the minimum power required to land safely to prevent engine
damage.
In these circumstances the primary fuel pump will continue to run until the engine
alternator stops providing electrical energy. If required, fuel supply can be shut off via the
fuel cock located behind the seats.