Federal Register #FAA20263474

FAA Proposed Airworthiness Directive for Pilatus PC-6 Series Airplanes

This opportunity involves a proposed airworthiness directive (AD) from the Federal Aviation Administration (FAA) for all Pilatus Aircraft Ltd. PC-6 series airplanes. - Government Buyer: - Department of Transportation, Federal Aviation Administration (FAA), Aircraft Certification Service - OEMs and Vendors: - Pilatus Aircraft Ltd. (primary OEM) - Products/Services Requested: - Revision of the Airworthiness Limitation Section (ALS) in the Aircraft Maintenance Manual (AMM) or Instructions for Continued Airworthiness (ICA) - Incorporation of new and more restrictive airworthiness limitations - Addition of life limits for the control column pitch trim relay - Inclusion of additional maintenance tasks as specified in EASA AD 2025-0281 - No specific part numbers or physical product quantities are listed; this is a regulatory maintenance update - Unique or Notable Requirements: - Compliance with updated European Union Aviation Safety Agency (EASA) AD 2025-0281 - Applies to all Pilatus PC-6 series models (including PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2) - Aims to prevent unsafe conditions that could result in loss of airplane control - FAA is seeking public comments on the proposed directive - Locations: - FAA offices in Westbury, NY and Kansas City, MO (contracting/government facilities) - Place of performance includes Dover, OH and Cleveland Clinic, Union Hospital Heliport, Dover, OH (for airspace rulemaking)

Description

The FAA proposes to supersede Airworthiness Directive (AD) 2021-11-08, which applies to all Pilatus Aircraft Ltd. Model PC-6 series airplanes. The new proposed AD requires revising the airworthiness limitation section of the existing aircraft maintenance manual or instructions for continued airworthiness to incorporate new or more restrictive airworthiness limitations, including adding life limits for the control column pitch trim relay. This action addresses an unsafe condition that could result in failure of certain parts and loss of control of the airplane. Comments on this proposal are due by May 21, 2026.

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