Cessna 152 — Maintenance Manual

This document is a mandatory service letter (SEL-27-02) issued by Textron Aviation, focusing on the detailed visual inspection of the rudder horn for corrosion in Cessna Model 150 and 152 series aircraft. It outlines the compliance requirements for inspections and maintenance procedures to prevent potential loss of rudder control due to corrosion between the rudder horn and bumpers. The document specifies the affected serial numbers, inspection steps, and materials needed for the maintenance tasks. It is crucial for aircraft owners and maintenance personnel to follow the outlined procedures to ensure safety and compliance with aviation standards.

• Mandatory inspections must be completed within 10 flight hours or 30 days.
• Detailed inspections must be performed at the next annual inspection, no later than March 31, 2020.
• Corrosion exceeding 0.010 inch on the rudder horn requires replacement of the rudder horn.
• Use only specified materials for corrosion protection and sealing during reassembly.
• A total of 10 labor hours is estimated for the inspection phase.