Airworthiness Directives; Fairchild Aircraft SA226 and SA227 Series Airplanes

الملخص

This amendment revises AD 94-07-10, which currently requires the following on Fairchild Aircraft SA226 and SA227 series airplanes: Repetitively inspecting (visually) the wing skin for cracks; dye penetrant inspecting the rib straps if the wing skin is found cracked; and, if any crack is found in the rib straps, repairing the rib straps and modifying the wing skin. That AD references an incorrect dye penetrant inspection when the wing skin is found cracked. This action maintains the requirements of AD 94-07-10, but incorporates reference to the correct dye penetrant inspection for when the wing skin is found cracked. The actions specified by this AD are intended to prevent failure of the wing skin at the top aft outboard corner of the battery box, which could result in structural damage to the wing.