Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A319, A320, and A321 series airplanes equipped with certain cockpit lateral fixed windows manufactured by PPG Aerospace. This proposal would require a detailed inspection of the cockpit lateral fixed windows to detect moisture ingression and delamination, and follow-on/corrective actions as applicable. This proposed AD also provides for an optional terminating action for the repetitive inspections. This action is necessary to prevent moisture ingression and delamination of the cockpit lateral fixed windows, which could result in the loss of the outer glass ply, and consequent damage to the airplane and injury to people or damage to property on the ground. This action is intended to address the identified unsafe condition.