21L.B.123 Continuing airworthiness oversight of a changed aircraft for which design compliance has been declared

If the Agency, through its continuing airworthiness oversight, including through reports received in accordance with point 21L.A.3, or by any other means, detects a non-compliance with the applicable detailed technical specifications or the applicable environmental protection requirements of a change for which design compliance has been declared, the Agency shall act in accordance with point 21L.B.64.