Cessna 172 Maintenance Manual page 163

1. General
A. This section provides repair procedures for the cowl skins and reinforcement angles.
2. Repair of Cowling Skins
A. Cowl halves are made of formed aluminum skin. If extensively damaged, complete sections of cowling
must be replaced. Standard insert-type skin patches, however, may be used if repair parts are formed
to fit. Small cracks may be stop drilled and dents straightened if they are reinforced on the inner side
with a doubler of the same material.
3. Repair of Reinforcement Angles
A. Due to their small size, cowl reinforcement angles should be replaced (rather than repaired) if they
become damaged.
CESSNA AIRCRAFT COMPANY
SINGLE ENGINE
STRUCTURAL REPAIR MANUAL
ENGINE COWLING REPAIRS
© Cessna Aircraft Company
71-10-00
Page 801
Jun 1/2005