Trim System Anomaly - Magni Gyro M16C Ordinary Maintenance Manual

M16 (C) TANDEM TRAINER
MAINTENANCE MANUAL
SECTION 5
5 UNSCHEDULED MAINTENANCE
(See Fig. 5.1/1 – 5.1/3)
WARNING:
Should an unscheduled maintenance of the gyroplane be necessary, then it is to be carried out and
recorded in the gyroplane or engine logbook.
By its very nature, it is very difficult to predict any unscheduled maintenance and how to carry it out. The best
solution is to apply standard diagnostic and repair techniques and to seek advice from a suitably qualified engineer
or directly from Magni Gyro.
To facilitate unscheduled maintenance, we are listing here below some of the problems and/or anomalies of the
systems or installations, with their symptoms and the procedures to resolve them.
5.1 TRIM SYSTEM ANOMALY
(See fig. 5.1/1 and 5.1/2)
The following are the possible anomalies of the trim system of the M16 (M16C) gyroplane and the correct
procedures to solve the problems.
5.1.1 DESCRIPTION OF SYSTEM
The trim system consists of an electric linear actuator pn 102, placed behind the mast (1), that acts through a
sheathed cable 2x1.500 pn 104 on the spring pn 109 fixed to the rotor head fork pn 046.
When the actuator is operated, there is a constant stress applied to the rotor head. This allows to obtain the angle
of incidence and by consequence the gyroplane attitude required by the pilot.
The pilot controls the actuator pn 102 via the switch pn 112 placed on the handle of the control stick.
The forward and backward movement of the control switch pn 112 leads to an attitude variation that is
proportional to the period.
Forward impulses correspond to nose down attitudes ‐ fast. Backward displacements correspond to nose up
attitudes ‐ slow.
5.1.2 ANOMALY
The displacement of the trim switch pn 112 does not correspond to movements of the actuator pn 102.
Solutions:
a. Ensure that the 10 A breaker (Accessories) is switched ON.
b. Check the efficiency of the actuator pn 102.
1. Remove the cable ties pn 2,4x197 that fix the trim control connector pn 115;
2. Disconnect the connector pn 115;
3. Extract all the breakers (1) of the instrument panel (2), except the 10 A breaker (Accessories);
ISSUE
A_November 2012
.
PAGE
89