Piper SENECA III - Page 355

PIPER
AIRCRAFT
CORPORATION
SECTION
9
PA-34-220T, SENECA
III SUPPLEMENT
16
few
seconds,
but
occasionally
it
may
take
up
to
a
full
minute.
When the
power
setting
is
to
be
changed,
the
synchrophaser switch
should
be
set to
"OFF"
for
30
seconds
before
the
power
setting
is adjusted;
then the
syn-
chrophaser
switch
may
be
returned
to
the
"1"
or
"2"
position,
whichever
provides
the
smoothest
operation.
If
the
propeller
RPM
differential
exceeds
50
RPM,
the
switch should
be
set at
"OFF"
for 30
to
40
seconds; then
the
propellers
can
be
synchronized
again
and the
synchrophaser switch
returned
to
"I"
or
"2." Pulling
the
circuit
breakers
completely
deactives
the
propeller
synchrophaser
system.
If
the
master
switch
is
turned
"OFF"
or
if
there
is
an
electrical
system
failure,
the
slave
engine
will
return
to
the
controlled
selected
RPM
plus
approximately
25
RPM
"out
of
synchroni-
zation"
regardless
of
the
position
of
the
synchrophaser switch.
SECTION 5
-
PERFORMANCE
No
changes
to
the
basic
performance
provided
by
Section
5
of this
Pilot's
Operating
Handbook
are necessary
for this
supplement.
ISSUED: APRIL
21,
1981
REPORT:
VB-1110
REVISED:
AUGUST
17,
1981
3
of 4,
9-105