SECTION 7
PIPER AIRCRAFT CORPORATION
DESCRIPTION & OPERATION
PA-28-236, DAKOTA
REPORT: VB-910
ISSUED: JUNE 1, 1978
7-2
REVISED: JULY 23, 1982
A vertical stabilizer, an all-movable horizontal stabilator, and a rudder
make up the empennage. The stabilator incorporates an anti-servo tab which
improves longitudinal stability and provides longitudinal trim. This tab
moves in the same direction as the stabilator, but with increased travel
7.5 ENGINE AND PROPELLER
The Lycoming 0-540-J3A5D engine is rated at 235 horsepower at 2400
rpm. The engine is equipped with a geared starter, a 60 ampere alternator,
dual magnetos, shielded ignition system, vacuum pump drive, a diaphragm
type fuel pump and a float carburetor.
The exhaust system consists of individual exhaust pipes routed in
pairs to three heavy gauge stainless steel mufflers. Exhaust gases are
directed overboard at the underside of the engine cowling. The mufflers
are surrounded by a shroud which provides heat for the cabin and for
windshield defrosting.
The propeller is a Hartzell HC-F2YR-l( )F /F8468A-4R constant speed
propeller. The Hartzell propeller is 80 inches in diameter, and is controlled
by a Hartzell F-4-21 governor mounted on a pad on the forward end of the
crankcase. This governor supplies oil to the propeller through the engine
shaft. The governor is controlled by a cable from the cockpit.
The two-piece cowling cools the engine in normal flight conditions,
including protracted climb, without the use of cowl flaps or cooling flanges.
The throttle quadrant, located in the lower center instrument panel,
contains the throttle, the mixture control, and the propeller governor control.
A friction lock on the right side of the quadrant prevents creeping of the
controls. In addition, the mixture control has a lock to prevent activation of
the mixture control instead of the pitch control To the right of the quadrant
is the carburetor heat control. Maximum carburetor heat is provided with the
control in the ON position. Air passes through a dry-type filter. when the
carburetor heat is in the OFF position.
A fuel pressure gauge is installed on the engine gauge cluster and a
manifold pressure gauge is installed in the left side of the instrument panel.
Summary of Contents for PA-28-236 DAKOTA
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