Summary
We propose to supersede an existing airworthiness directive (AD) that applies to certain Airbus Model A318-111 and -112 airplanes, Model A319 series airplanes, Model A320 series airplanes, and Model A321 series airplanes. The existing AD currently requires repetitive inspections of the 80VU rack lower lateral fittings for damage; repetitive inspections of the 80VU rack lower central support for cracking; and corrective action if necessary. That existing AD also specifies optional terminating action for the repetitive inspections. Since we issued that AD, we have received reports of worn lower lateral fittings of the 80VU rack. This proposed AD would reduce the inspection compliance time, add an inspection of the upper fittings and shelves of the 80VU rack, and add airplanes to the applicability. We are proposing this AD to detect and correct damage or cracking of the 80VU fittings and supports, which could lead to possible disconnection of the cable harnesses to one or more computers and, if occurring during a critical phase of flight, could result in reduced control of the airplane.