Operation Anomaly - Magni Gyro M16C Ordinary Maintenance Manual

5.2.2 OPERATION ANOMALY
(See fig. 5.1/1)
The display stays black and gives no indication.
Actions
Make sure the MASTER switch (20A) is in ON position and the breaker 2A FD is switched ON.
Check the correct tightening of the connectors on the back of the instrument.
Verify the continuity of the power supply wires of the rotor tachometer instrument.
5.3 ROTOR VIBRATIONS
(See Fig. 5.3/1)
It is important to keep the rotor vibrations on the controls and machine within acceptable limits. This contributes
to the maintenance of the gyroplane. The frequencies should remain similar to those found during flight testing
and adjustments conducted by the producer.
Each gyroplane can show different types of vibrations, characterized by different amplitude and frequency,
according to load, speed and rotor assembly.
The pilot must evaluate the vibrations on the controls. Hereby he may find that the vibrations are getting worse
with time. But, prior to any adjustment, the vibrations must be checked, during a periodical or special inspection,
by a pilot approved by the producer.
The first step towards the solution of the problem is to identify the type of vibration so as to define the type of
intervention needed and eliminate the problem more easily.
Lateral vibrations
The control stick shakes laterally (left and right).
Longitudinal vibrations
The control stick shakes longitudinally (pitch up and down)
Divergent vibrations
5.3.1 LATERAL VIBRATIONS
Lateral vibrations with constant frequency and amplitude can be smoothened by acting on the threaded bushing
pn 247 (loose the lock nut pn 283 first to move the threaded bushing pn 247). In fact, screwing the threaded
bushing in or out makes it possible to offset the hub‐bar pn 245 versus the head pn 066 of the rotor head. But, if
the threaded bush has not been tampered or if the lock nut is not loose, it is better to avoid this intervention.
PAGE
94
M16 (C) TANDEM TRAINER
MAINTENANCE MANUAL
ISSUE
A_November 2012