Repair of Cracks in Noncritical Area

Engine Cowling and Baffles are subjected to a great deal of vibration and often crack.If the crack is not stopped, it will grow until the component is seriously damaged.

• When a crack is discovered, drill a small hole with a #40 or #30 drill slightly beyond the end of the visible crack. This hole distributes the stresses at the end of the crack so they will be less than the tensile strength of the metal. Install a patch over the crack to prevent vibration from causing further damage to weakened component.