Flight Controls - Elevator and Aileron Balance Tubes - Inspection / Replacement
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Aerostar PA-60-601P, PA-60-602P, and PA-60-700P airplanes must begin repetitive inspections of the elevator and aileron balance tubes for corrosion and rust as specified in Aerostar Service Bulletin SB600-138. Tubes must be replaced with corrosion-protected parts if corrosion is detected. Compliance with this AD is required by January 22, 2021.
Summary
Federal Aviation Administration Airworthiness Directive 2020-24-10 is a final rule addressing all Aerostar Aircraft Corporation Model PA-60-601P, PA-60-602P, and PA-60-700P airplanes. It mandates repetitive inspections and replacement of elevator and aileron balance tubes due to reported corrosion issues. This directive aims to ensure continued airworthiness and safety of these aircraft models.
What changed
This new airworthiness directive introduces mandatory repetitive inspections of the elevator and aileron balance tubes for corrosion and rust, and requires replacement of these tubes when corrosion is found or at specified intervals. It also specifies the use of updated balance tubes with improved corrosion protection (Revision M or later).
Why it matters
This AD addresses a critical safety concern where corrosion on balance tubes could lead to failure or jamming of flight controls, potentially causing loss of airplane control. Operators and maintenance organizations must comply to prevent unsafe conditions and ensure regulatory compliance. The directive standardizes inspection and replacement procedures to mitigate corrosion risks in affected Aerostar aircraft.
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New ADs and bulletins for Aerostar Aircraft Corporation PA-60 (Aerostar), Aircraft Corporation PA-60-601P, Aircraft Corporation PA-60-602P and Aircraft Corporation PA-60-700P, summarized like this page, every Monday.