Cessna 172 Maintenance Manual page 105

1. Rudder
A. The rudder is constructed of a spar, ribs, and skin. A torque tube, incorporating a lower hinge bracket,
is attached to the lower leading edge. A balance weight is bolted to the upper tip leading edge.
2. Negligible Damage
A. Minor skin dents and nicks are considered negligible and should be worked out by burnishing.
3. Repairable Damage
A. Skin damage exceeding that considered negligible damage, can be repaired by patching. Typical
repairs are illustrated in Chapter 51, Typical Skin Repair and Control Surface Repair.
B. A flight control surface which has been repaired or replaced must be balanced in accordance with the
procedures outlined in Chapter 51, Flight Control Surface Balancing.
4. Replacement Damage
A. Assemblies that have been twisted or warped beyond usable limits and parts with extensive corrosion
damage are considered replaceable. Small parts which may be easily fabricated from materials
available locally should be replaced.
CESSNA AIRCRAFT COMPANY
SINGLE ENGINE
STRUCTURAL REPAIR MANUAL
RUDDER
© Cessna Aircraft Company
55-40-00
Page 801
Jun 1/2005