Amplified Procedures; After Landing; Securing Airplane; Starting Engine - Cessna Hawk XP R172K Pilot Operating Handbook

I
SECTION
4
NORMAL PROCEDURES
CESSNA
MODEL R172K
Touchdown -- MAIN WHEELS FIRST.
Landing Roll -- LOWER NOSE WHEEL GENTLY.
Braking -- MINIMUM REQUIRED.
(5)
(6)
(7)
SHORT FIELD LANDING
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Airspeed -- 65-75 KIAS (flaps UP).
Wing Flaps -- FULL DOWN (below 85 KIAS).
Airspeed -- MAINTAIN 63 KIAS.
Elevator and Rudder Trim -- ADJUST.
Power -- REDUCE TO IDLE as obstacle is cleared.
Touchdown -- MAIN WHEELS FIRST.
Brakes -- APPLY HEAVILY. .
Wing Flaps -- RETRACT for maximum brake effectIveness.
SI';CTION 4
NOHMI\!, 1)1{()~II;DUImS
AMPLIFIED PROCEDURES
STARTING ENGINE
Proper fuel management and throttle adjustments are the determin-
ing factors in securing an easy start from your continuous-flow fuel-
injection engine. The procedure outlined in this section should be fol-
lowed closely as it is effective under nearly all operating conditions.
Conventional full rich mixture and high RPM propeller settings are
used for starting; the throttle, however, should be fully closed initially.
When ready to start, place the auxiliary fuel pump switch in the HIGH
position and advance the throttle to obtain 8-10 gal/hr fuel flow. Then
close the throttle and release the auxiliary fuel pump switch. Place the
ignition switch in the START position. While cranking, slowly ad-
vance the throttle until the engine starts. Slow throttle advancement is
essential since the engine will start readily when the correct fuel! air
ratio is obtained. When the engine has started, reset the throttle to the
desired idle speed (800-1000 RPM).
The continuous-flow fuel injection system will inject atomized fuel
in the intake ports as soon as the throttle and mixture controls are
opened and the auxiliary fuel pump is turned on. If the auxiliary
pump is turned on accidenta.Ily while the engine is stopped, with the
throttle open and the mixture rich, solid fuel will collect temporarily in
the cylinder intake ports, the quantity depending on the amount of the
throttle opening and the length of time the pump has been operating.
If this happens, it is advisable to wait a few minutes until this fuel
drains away before starting the engine. To avoid flooding, turn the
auxiliary fuel pump switch off promptly when the fuel flow reaches 10
gal/hr during preparation for engine start.
BALKED LANDING
(1)
(2)
(3)
(4)
(5)
Power -- FULL THROTTLE and 2600 RPM.
Wing Flaps -- RETRACT to 20°.
Airspeed -- 55 KIAS. .
Wing Flaps -- RETRACT slowly after reachmg 65 KIAS.
Cowl Flap -- OPEN.
Engine mis-starts characterized by weak, intermittent firing fol-
lowed by puffs of black smoke from the exhaust are caused by over-
priming or flooding. This situation is more apt to develop in hot
weather, or when the engine is hot. If it occurs, repeat the starting
routine with the throttle approximately 1/2 open, the mixture in idle
cut-off and the auxiliary fuel pump switch off. As the engine fires,
move the mixture control to full rich and decrease the throttle to idle.
Engine mis-starts characterized by sufficient power to take the en-
gine away from the starter but dying in 3 to 5 revolutions are the result
of an excessively lean mixture after the start and can occur in warm or
cold temperatures. Repeat the starting procedure but allow additional
priming time with the auxiliary fuel pump switch on HIGH before
cranking is started. If extremely hot temperatures have caused vapor
which prevents a start, it will be necessary to hold the auxiliary fuel
4-11
AFTER LANDING
(1) Wing Flaps -- RETRACT.
(2) Cowl Flap -- OPEN.
SECURING AIRPLANE
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Parking Brake -- SET.. . . OFF
Radios, Autopilot (if installed), Electncal EqUlpment -- .
Throttle -- ID LE.
Mixture -- IDLE CUT-OFF (pull full out).
Ignition Switch -- OFF.
Master Switch -- OFF.
Control Lock -- INSTALL.
Fuel Selector Valve -- RIGHT.
4-10