Flight Controls — Flap Drive System / Flap Fairings and Front Inboard Tension Rods — Inspection / Modification / Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Pilatus PC-12/47E aeroplanes with serial numbers 1819 to 1843 and 1845 to 1854 must inspect the inboard flap fairings within 100 flight hours or 6 months from 27 September 2019, whichever occurs first. If incorrect shapes or chafing are detected, affected parts must be modified or replaced before the next flight. Additionally, no affected parts may be installed unless they are serviceable as defined in the directive.
Summary
EASA Airworthiness Directive 2019-0231 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Pilatus Aircraft Ltd PC-12/47E aeroplanes with manufacturer serial numbers 1576 and higher. It addresses inspection, modification, and replacement requirements for the flap drive system, specifically the inboard flap fairings aft (IFFA) and front inboard tension rods. The directive aims to ensure continued airworthiness by preventing potential flap drive arm failure due to chafing and corrosion.
What changed
This new airworthiness directive introduces mandatory one-time inspections of the left-hand and right-hand inboard flap fairings aft (IFFA) and, if necessary, inspections and replacements of the associated front inboard tension rods. It requires modification or replacement of affected parts if incorrect shapes or chafing are found. The directive also prohibits installation of non-serviceable affected parts from the effective date onward.
Why it matters
This directive is critical for aviation professionals because it addresses a safety risk that could lead to asymmetric flap extension and reduced aircraft control. Operators and maintenance organizations must comply to avoid potential flap drive arm failure, ensuring safe flight operations and regulatory compliance. It also impacts parts management by restricting installation of non-serviceable components.
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