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:
BAE Systems (Operations) Ltd has determined that in order to assure the continued structural integrity of the horizontal stabilizer lower skin and joint plates in the rib 1 area of certain BAe 146 aircraft, a revised inspection programme for this area is considered necessary. The disbonding of joints can lead to corrosion which, if undetected, could result in degradation of the structural integrity of the horizontal stabilizer. * * * * *
The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.