Mooney M20J 201 — Avionics Manual

This document is a service bulletin issued by Mooney Airplane Company, Inc. regarding the inspection and maintenance of landing gear actuators in various Mooney M20 series aircraft, including the M20J. It outlines procedures for inspecting the 'No Back' clutch spring in Eaton or Vickers landing gear actuators, which are critical for the proper operation of the landing gear system. The bulletin specifies compliance timelines for inspections and replacements, as well as detailed instructions for disassembly, inspection, and reassembly of the actuators. It is intended for maintenance personnel and service centers to ensure the safety and reliability of the landing gear systems in affected aircraft.

• The service bulletin applies to Mooney M20 series aircraft, including the M20J.
• A one-time inspection of the 'No Back' clutch spring is required within 100 flight hours.
• A 1000-hour replacement of the 'No Back' clutch spring is mandated.
• Visual inspections of the clutch spring must be conducted with a magnifying glass.
• Proper reassembly and torque specifications are critical to ensure actuator functionality.