Airframe; Engine And Propeller - Piper Cherokee Archer II Pilot Operating Handbook

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PA·28-l81, CHEROKEE ARCHEH II
SECTION
7
DESCRIPTION AND OPERATION
SI;C'l'IUN 7
DESCRIPTION AND OPERATION
OF THE AIRPLANE AND ITS SYSTEMS
7.1 THE AIRPLANE
The PA-28-181 Cherokee is a single-engine, low-wing monoplane of all metal construction. It has
four-place seating, two hundred pound baggage capacity, and a 180 horsepower engine.
7.3 AIRFRAME
The basic airframe, except for a tubular steel engine mount, steel landing gear struts, and other
miscellaneous steel parts, is of aluminum alloy construction. The extremities - the wing tips, the cowling,
the tail surfaces - arc of fiberglass or ABS thermoplastic. Aerobatics are prohibited in this airplane since the
structure is not designed for aerobatic loads.
The semi-tapered wings have a laminar f10w type NACA 65,-415 airfoil. The wings are attached to
each side of the fuselage by insertion of the butt ends of the respective main spars into a spar box
carry-through which is an integral part of the fuselage structure, providing, in effect, a continuous main spar
with splices at each side of the fuselage. TIlere are also fore and aft attachments at the rear spar and at an
auxiliary front spar.
7.5 ENGINE AND PROPELLER
The Cherokee 181 is powered by a Lycoming 0-36o-A4M four cylinder, direct drive, horizontally
opposed engine rated at 180 horsepower at 2700 rpm. It is furnished with a starter, a 60 ampere, 14 volt
alternator, a shielded ignition, vacuum pump drive, a fuel pump, and a dry, automotive type carburetor air
mter. .
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The exhaust system is made entirely from stainless steel and is equipped with dual muff1ers. A heater
shroud around the mufflers is provided to supply heat for the cabin and windshield defrosting.
The Sensenich 76EM8S5·o-60 or 76EM8S5-o-62 fixed-pitch propeller is made from a one-piece alloy
forging.
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ISSUED: JUNE I R. 1976
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REPORT: VB-790
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