M16 (C) TANDEM TRAINER
MAINTENANCE MANUAL
.
ISSUE
PAGE
A_November 2012
89
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);
Summary of Contents for M16C
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