The FAA has issued a new airworthiness directive (AD) for Boeing 727 airplanes due to risks caused by excessive sealant on wing parts, which might hide cracks during inspections. This rule mandates changes to maintenance or inspection programs to ensure the required damage tolerance rating and repetitive inspections of certain wing parts to detect potential issues. Effective March 31, 2021, this AD aims to prevent possible structural failures that could lead to loss of control of the aircraft. The directive includes compliance procedures, costs, and the regulatory rationale behind these safety measures.
Simple Explanation
The FAA made a new safety rule for Boeing 727 airplanes because too much glue on the wings might hide cracks. They want regular check-ups to keep the airplane safe and flying properly.