Turbulent Air Operation - Piper cherokee WARRIOR Pilots Operating Manual

CTTEROKEE WARRIOR
To lean the mixture, pull the mixture control until the engine becomes rough, indicating
that the lean mixture limit has been reached in the leaner cylinders. Then enrich the mixture by
pushing the control toward the instrument panel until engine operation becomes smooth.
The continuous use of carburetor heat during cruising flight decreases engine efficiency.
Unless icing conditions in the carburetor are severe. do not cruise with carburetor heat on.
Apply FULL carburetor heat slowly and only for a few seconds at intervals determined by the
icing conditions.
In order to keep the airplane in best lateral trim during cruise flight, the fuel should be
used alternately from each tank. It is recommended that one tank be used for one hour after
takeoff, the other tank be used for two hours, then return to the first tank. The second tank
will contain approximately one half hour of fuel. Do not run tanks completely dry in flight.
The following is a list of some fuel management recommendations:
I . Fuel quantity should be visually checked in both tanks before entering the airplane.
2. Takeoff should be made on the fuller tank to assure best fuel flow. and this tank
selected before or immediately after starting to establish an adequate fuel flow before
takeoff. The tank with the higher fuel quantity should be selected for landing.
3. Fuel tank selection at low altitude is not recommended since adequate recovery time
is essential in the event of an error in fuel selection.
4. The electric fuel pump should be turned on before switching tanks and left on for a
short period thereafter.
5. To avoid the necessity of making a hasty selection and to assure a continuous tuel
flow, the selector should be changed to another tank before the fuel is exhausted
from the tank in use.
6. Operation of the engine driven pump should be checked while taxiing or during the
preflight runup by switching off the electric fuel pump and observing the fuel
pressure.
7. During cruise, the electric fuel pump should be in the off position so that any
malfunction of the engine driven fuel pump is immediately apparent.
8. If signs of fuel stawation should occur at any time during l-light, fuel exhaustion
should be suspected. at which time the fuel selector should immediately be positioned
to the fuller tank and the electric fuel pump switched to the on position.
TURBULENT AIR OPERATION
In keeping with good operating practice r"sed in all aircraft, it is recommended that when
turbulc-nt air is cncountercd or cxpected, the airspeed be reduced to maneuvering spced to
reduce the structural load caused by gusts and to allow for inadvertent speed build-ups which
may occur as a result of the turbulence or distractions caused by the conditions.
MANEUVERS
The airplane must be operated as a normal or utility category airplane in compliance with
the operating limitations stated in the form of placards and markings, and those given in the
Airplane Flight Manual. Except for training maneuvers (steep turns, chandelles, andlazy eights)
which are permitted only when the airplane is loaded to the utility category. acrobatic
maneuvers are prohibited.
OPERATING INSTRUCTIONS
REVISED: JUNE 14.1974
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