Summary
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require repetitive detailed inspection and high frequency eddy current (HFEC) inspections for cracks of the wing center section (WCS) spanwise beams, and repair if necessary. This proposed AD was prompted by reports of cracks found in the web pockets of the WCS spanwise beams. We are proposing this AD to detect and correct cracking in the WCS spanwise beams, which could result in reduced structural integrity of the wings.