Summary
This document proposes to supersede Airworthiness Directive (AD) 99-06-02, which currently requires repetitively inspecting the wing spar center web cutout on both wings for cracks between Wing Station (WS) 8 and WS 17.5 on certain Fairchild Aircraft (Fairchild) SA226 and SA227 series airplanes, and immediately repairing any area found cracked. The repair will eliminate the need for the repetitive inspections on that particular wing spar. Since that AD became effective, the FAA has determined that it inadvertently omitted certain serial numbers of the Model SA227-CC/DC airplanes. The proposed AD would retain the actions of AD 99-06-02, and would add these Model SA227-CC/DC airplanes to the Applicability section of the AD. The actions specified by the proposed AD are intended to continue to detect and correct fatigue cracking of the wing spar center web cutout area, which could result in structural failure of the wing spar to the point of failure with consequent loss of control of the airplane.