Copyright of RotorSport UK Ltd
Document number RSUK0060
Page 29 of 101 Page issue 2, dated 12.09.11
Flight in icing conditions may also lead to ice forming on the inner leading edge of the
blade (see photo), leading to vibration and loss of lift performance. Flight in icing
conditions is NOT allowed!
Photo of rotor blade with significant icing built up.
3.12 OTHER EQUIPMENT FAILURE
Good judgement must be used in monitoring instruments, and timely action taken should
a reading be in doubt. If in doubt, make a precautionary landing and resolve the issue
rather than continuing a flight.
Actions recommended:
ASI failure: In level flight fly with an engine rpm of 4,200 lightly laden to 5,000 heavily
laden which will give approx 60 to 80mph. When descending (nose down) throttle back to
prevent overspeed, to approx 3,000 to 3,500rpm to your designated landing site,
maintaining speed for a flare on landing in the final descent. Leave plenty of space to land
in should the flare be prolonged. Experience will aid judgement of the best engine rpm to
maintain to match the desired flight speed and payload.
Altimeter failure: In a gyroplane it is reasonably easy to judge height. If in controlled
airspace ensure the controlling authority is informed to prevent traffic conflict. Otherwise
continue to a safe landing using navigational skills to avoid potential collisions.
Compass failure: Resort to map, aided by GPS if available, fly at a speed to suit
navigational requirements or make a precautionary landing if unable to identify position.
Rotor RPM gauge failure: This is not essential for safe flight, and rotor rpm cannot
normally be affected in flight unless significant “g” or negative “g” is exerted – and then will
only provide an indication of the rpm. If failed in flight, repair on landing
Engine RPM: The engine is rpm-self limiting by propeller pitch in flight. If the gauge fails,
replace on landing. Use audio cues to establish rpm
Oil pressure, oil temp and water temp. A failure of one gauge can indicate an engine fault
or simply a gauge fault. Watching the other gauges will indicate the likely failure mode.
For example,
1. Gauge suddenly goes to full scale deflection, other gauges reading normally –
likely gauge fault