Cessna Hawk XP Pilot Operating Handbook page 11

SECTION 3
CESSNA
MODEL R172K
EMERGENCY PROCEDURES
(10) Perform a landing · ·f
for
. d . . . . approach using a forward sllp, i necessary ,
improve visibility.
(lal)
Applrot~ch
at 80 to 90 KIAS, depending upon the amount of the
ccumu a ion.
(12) Perform a landing in level att"t d
i
u e.
STATIC SOURCE BLOCKAGE
(Erroneous Instrument Reading Suspected)
(1)
A~ternate Static Source Valve
-- PULL ON
~~~ ~irs~eed
-- Consult appropriate
calibratio~
table in Section 5 or
im
~n approac~
3 knots faster than normal.
(3) Altitude -- Crmse and approach 25 feet higher than normal.
LANDING WITH A FLAT MAIN TIRE
(1) Approach -- NORMAL.
(2) Wing Flaps -- FULL DOWN.
(3) Touchdown -- GOOD TIRE FIRST, hold airplane off flat tire as
long as possible with aileron control.
ELECTRICAL POWER SUPPLY SYSTEM MAL-
FUNCTIONS
OVER-VOLTAGE LIGHT ILLUMINATES
(1) Master Switch -- OFF (both sides).
(2) Master Switch -- ON.
(3) Over-Voltage Light -- OFF.
If over-voltage light illuminates again:
(4) Flight -- TERMINATE as soon as possible.
AMMETER SHOWS DISCHARGE
3-8
(1) Alternator -- OFF.
(2) Nonessential Electrical Equipment -- OFF.
(3) Flight -- TERMINATE as soon as practical.
·'
. .
_
CESSNA
MODEL R172K
SECTION 3
EMERGENCY PROCEDURES
AMPLIFIED PROCEDURES
ENGINE FAILURE
If
an engine failure occurs during the takeoff run, the most impor-
tant thing to do is stop the airplane on the remaining runway. Those
extra items on the checklist will provide added safety during a failure
of this type.
Prompt lowering of the nose to maintain airspeed and establish a
glide attitude is the first response to an engine failure after takeoff. In
most cases, the landing should be planned straight ahead with only
small changes in direction to avoid obstructions. Altitude and airspeed
are seldom sufficient to execute a 180° gliding turn necessary to return
to the runway. The checklist procedures assume that adequate time
exists to secure the fuel and ignition systems prior to touchdown.
After an engine failure in flight, the best glide speed as shown in
figure 3-1 should be established as quickly as possible. While gliding
toward a suitable landing area, an effort should be made to identify the
cause of the failure . If time permits, an engine restart should be at-
tempted as shown in the checklist. If the engine cannot be restarted, a
forced landing without power must be completed.
12,000 .----r-----.---r-----r---.-----....--..----r--.--,.,..,.,,..,..
}:.?'.-'.-}·:·::··
c::
10,000
*PROPELLER WINDMILLING
z
<{
8000
er:
er:
LU
I-
LU
6000
>
0
OJ
<{
4000
I-
WEIGHT (LBS) KIAS
I
<2
2550
75
LU
2000
I 2150
69
1750 62
0
0
2 4 6 8 10 12 14 16 18
20
GROUND DISTANCE - NAUTICAL MILES
Figure 3-1. Maximum Glide
3-9
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