Piper PA-12 Super Cruiser — Maintenance Manual

This document outlines the correct procedures for rigging the Piper PA-12 Super Cruiser and related models, including the PA-12S, PA-14, PA-18, and PA-19. It provides detailed instructions on leveling the aircraft, checking dihedral angles, and adjusting wing washout. The information is crucial for maintenance personnel and riggers to ensure proper aircraft performance and safety. The document references specific measurements and techniques to achieve accurate rigging, which is essential for flight stability and control. It also includes alternative leveling procedures approved by the FAA, offering flexibility in rigging practices.

• The correct dihedral angle should measure 3 1/8 inches from the string to the top of the fuselage front spar wing hinge fitting.
• The correct wing washout for the Piper PA-12 is 2 ½ degrees.
• When adjusting washout, the bubble on the level must be centered to ensure proper wing configuration.
• An alternate leveling procedure can be used if original marks are not available, utilizing spirit or digital levels.
• The PA-12 has a wing root angle of incidence of -0.060 degrees, differing from the PA-18 and PA-19.