Piper Cherokee Six 300 Information Manual page 79

CHEROKEE SIX - 3OO
5.
tf the "Air Cond. Door Open" light does not respond as specified above, an air
conditioner system or indicator bulb malfunction is indicated, and further
investigation should be conducted prior to flight.
The above operational check may be performed during fliglrt if an in flight failure is
suspected.
AIR CONDITIONER EFFECTS ON AIRPLAT.IE PERFORMANCE
Operation of the air conditioner will cause slight decreases in cruise speed and range. Power
from the engine is required to run the compressor, and the condenser door, when extended,
causes a slight increase in drag. When the air conditioner is turned off there is normally no
measurable difference in climb, cruise or range performance of the airplane.
NOTE
To insure maximum climb perfornance the air conditioner must
be furned off manually before takeoff to disengage the
compressor and retract the condenser door. Also the air
conditioner must be turned off manually before the landing
approach in preparation for a possible go-around.
i
Although the cruise speed and range are only slightly affected by the air conditioner
.operatiou, these changes should be considered in preflight planning. To be conservative, the
,following figures assume that the compressor is operating continuously while the airplane is
iairborne. This will be the case only in extremely hot weather.
The decrease in true airspeed is approximately 5 mph at all power settings.
The decrease in range may be as much as 35 statute miles for the 84 gallon capacity.
The climb performance is not compromised measurably with the air conditioner operating
since the compressor is declutched and the condenser door is retracted, both automatically,
when a full throttle position is selected. When the full throttle position is not used or in the
event of a malfunction which would cause the compressor to operate and the condenser door to
be extended, a decrease in rate of climb of as much as 100 fpm can be expected. Should a
malfunction occur which prevents condenser door retraction when the compressor is turned olT,
a decrease in rate of climb of as much as 50 fpm can be expected.
EMERGENCY LOCATOR TRANSMITI:ER*
The Emergency Locator Transmitter (ELT) when installed, is located in the aft portion of
the fuselage just below the stabilator leading edge and is accessible through a plate on the right
side of the fuselage. (On aircraft manufactured prior to mid-1975, this plate is retained by three
steel Phillips head screws. On aircraft manufactured from mid-1975 and on, this plate is attached
with three slotted-head nylon screv/s for ease of removal; these screws may be readily removed
with a variety of common items such as a dime, a key, a knife blade, etc. If there are no tools
available in an emergency the screw heads may be broken off by any means.) The ELT is an
emergency locator transmitter which meets the requirements of FAR 91.52. The unit operates on
a self-contained battery. The replacement date as required by FAA regulations is marked on the
transmitter label.
*Optional equipment
OPERATING IN STRUCTIONS
REVISED: DECEII{BER 15. 1978
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