Cessna 172P - Page 38

SECTION
3
EMERGENCY
PR,OCEDURES
CESSNA
MODEL 17ZP
heat as required,
An
unexplained
Ioss
in engine
speed could
be
caused
by carburetor
ice
or air
intake filter
ice. I¡ean the
mixture
for
maximum
RP
ontinuously.
6. Plan
a landing
at
tremely rañid ice
build-up,
select
a
site.
7,
ïVith
an
ice
accumulation
of
1/4 inch
or moro
oIr the wingleading
odges,
bo
prepared
for signifioantly
higher
stall speed.
8. Leave
wing
flaps retracted.
.With
a severe ioe
build-up on
the
horizontal
tail,
the change in
wing
wake airflow
direction caused
by
wing flap
oxtension could result
in
a
loss
of
elevator
effectiwe-
ness.
9. Open left
window and, if
practical,
sorape
ice from
a
portion
of
the
windsbield
for
visibility in
the landing
approach,
10.
Perform a landing
approach
using a forward
slip, if
necessa,ry,
for
improved
visibility.
11. Approaoh
at 65
to
7õ
KIAS depending
upon
the emount
of ttre
accumulation.
12.
Perform
a
landing
in level attitude.
STATIC
SOURCE BLOCKAGE
(Erroneous
lnstrument
Reading
Suspected)
1.
Alternate
Static
Source Valve -- PULL
ON.
2. Airspeed --
Consult appropriate calibration
tables in
Section
5.
LAND¡NG WITH A
FLAT
MAIN TIRE
1.
Approach
--
NORMAL.
2. Touchdown
--
GOOD
TIRE FIRST, hold
airplane off flattire
as long
as
possible.
ELECTRICAL
POWER
SUPPLY SYSTEM
MALFUNCTIONS
AMMETER SHOWS
EXCESSIVE RATE
OF CHARGE
(Full
Scale
Ddflection)
1.
Alternator
--
OFF.
2. Alternator
Circuit Breaker
--
PULL.
3.
Nonessential
Electrical Equipment
--
OFF.
4. Flight
--
TERMINATE
as soon as
practical.
3-8
30 May
1980