Piper Navajo PA-31 Service Manual page 18

PIPER NAVAJO SERVICE MANUAL
SECTION I
INTRODUCTION
1-1. GENERAL. This manual contains service and maintenance instructions for the Piper PA-31 Navajo,
designed and manufactured as a versatile aircraft in the personal and business avation field, by the Piper
Aircraft Corporation, Lock Haven, Pennsylvania.
1-2. SCOPE OF MANUAL. Sections II and III comprise the service part of this manual. whereas Sections
IV through XIV compnse the maintenance instructions. The service instructions include ground handling,
servicing and inspection. The maintenance instructions for each system include troubleshooting, removal
and installation of components, and corrective maintenance and testing; each major system of the airplane
is covered in a separate section. Only qualified personnel should perform the operations described in this
manual.
The description of the airplane included in this section is limited to general information. Section II
gives leading particulars and principal dimensions, while each major system is described in its appropriate
section of the manual.
1-3. DESCRIPTION. The Piper PA-31 Navajo is a six to eight place, twin engine, low-wing monoplane of
all metal construction.
The following paragraphs provide descriptions of the major components and
systems.
1-4. FUSELAGE. The fuselage is a semi-monocoque structure that consists of three basic units: the nose
section, the cabin section, and the tail cone section.
1-5. WING. The laminar flow wing is of all metal stressed skin, full cantilever design, consisting of two
wing panels bolted together at the center of the fuselage. The wing tips are removable. The ailerons are
cable and push rod controlled and are statically and dynamically balanced. The trailing edge wing flaps are
electrically operated.
1-6. EMPENNAGE. The empennage consists of the vertical stabilizer (fin), rudder with trim tab,
horizontal stabilizer, and elevator with trim tab. The control surfaces are cable controlled, and are
dynamically and statically balanced.
Reissued: 10/12/79
INTRODUCTION
1A18