Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to supersede Airworthiness Directive (AD) 2010-04- 03, for all Airbus Model A310 series airplanes. AD 2010-04-03 currently requires accomplishing repetitive detailed visual inspections for cracking around the fastener holes in certain wing top skin panels between the right side and left side of the front and rear spars, and repair if needed. Since we issued AD 2010-04-03, Airbus improved the ultrasonic inspection program to allow earlier crack detection and to extend the repetitive inspection intervals. We have determined these inspections are necessary to address the unsafe condition. This proposed AD would continue to require the repetitive detailed inspections for cracking around the fastener holes in certain wing top skin panels between the front and rear spars, and repair if needed, and would require supplemental repetitive ultrasonic inspections for cracking around the fastener holes in certain wing top skin panels and repair if needed. We are proposing this AD to detect and correct cracking around the fastener holes in certain wing top skin panels between the right side and left side of the front and rear spars, which could result in reduced structural integrity of the airplane.