EASA AD 2018-0222
Flight Controls — Rudder Shaft Assembly Rivet Configuration — Inspection
Summary
EASA Airworthiness Directive 2018-0222 is an airworthiness directive addressing the rudder shaft assembly rivet configuration on all models of Pilatus Aircraft Ltd PC-6 aeroplanes. It mandates inspection of specific rudder shaft assemblies with part numbers 116.35.06.030 or 6232.0057.00 to verify rivet configuration and ensure compliance with approved standards.
What Changed
This new airworthiness directive introduces a one-time inspection requirement for the affected rudder shaft assemblies to detect incorrect rivet configurations. It also requires corrective actions if non-standard rivet configurations are found and restricts installation of affected parts to only those that are serviceable as defined by the directive.
Why It Matters
This directive is critical for aviation professionals because incorrect rivet configurations on the rudder shaft assembly can lead to rivet failure and reduced aircraft control, posing a safety risk. Operators and maintenance organizations must ensure compliance to prevent potential accidents and maintain airworthiness of PC-6 aeroplanes.
What To Do
Operators must inspect the affected rudder shaft assemblies during the next scheduled 100 flight hours maintenance or annual inspection, or within 12 months of 2018-11-02, whichever occurs first. If incorrect rivet configurations are found, they must contact Pilatus Aircraft Ltd for approved repair instructions and complete repairs before further flight. Only serviceable parts may be installed from the effective date onward.
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