Summary
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
During routine inspection procedures on the wing assembly line it was identified the possibility of cracks and deformation developing during assembly on the internal wing spars and rib flanges, causing a safe[ty] margin reduction. * * * * *
The unsafe condition is cracking and deformation of wing spar and rib flanges, which could result in loss of structural integrity of the wing. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.