s
Temporary Revision
for Cessna
Pilot's
Operating Handbook and
FAA
Approved
Airplane Flight Manual
Publication Affected:
Serial Numbers
Affected:
Description
of Change:
Filing
Instructions:
Removal Instructions:
Model 172R (172RPHUS09), 172R180
(172R180PHUS03),
and
172S
(172SPHUS05)
Pilot's
Operating
Handbook and FAA
Approved Airplane
Flight Manual.
Airplanes
17280001
and
On
and
172S8001
and
On
not
incorporating
the Nav
III
Avionics
Option
(G1000).
New
Idle
Power Engine Roughness
Information (As
Required by AD
2001-
06-17, Paragraph (d)(3)).
Insert this
temporary
revision in Model
172R
(172RPHUS09),
172R180
(172R180PHUS03),
and
172S
(172SPHUS05)
Pilot's
Operating
Handbook
and
FAA Approved Airplane
Flight Manual adjacent
to
page
3-20.
This
temporary
revision
must
be
removed and discarded when the Idle
Power
Engine Roughness Information
has
been incorporated.
IDLE POWER ENGINE ROUGHNESS
(As Required by
AD 2001-06-17, Paragraph (d)(3))
An
excessively rich idle fuel
flow
may cause low speed engine
roughness during
flight.
During most
in-flight low engine speeds
(power
off stalls,
approach
to
landing, etc.), the mixture control
is
normally
in the full-rich
position.
However, to
improve engine
roughness (caused by an improperly adjusted fuel
servo)
during low
engine speeds
while
in
flight,
you should
rotate
the vernier mixture
control (leaning
of fuel mixture).
You
may
also
have to
lean the
fuel
mixture if
this
low engine
speed
results
in
power
loss and
you
need
to restart
the engine during flight. In all cases, you should land the
airplane
at
the
nearest
airport
for
repairs if
low
speed
engine
roughness requires
you
to
adjust the fuel mixture
control
to
improve
engine operation.
(Continued Next Page)
172PHTR02
Summary of Contents for 172R
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