Reciprocating Engine — Valve Push Rod Assembly — Inspection / Replacement
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- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of SportStar RTC aeroplanes with Rotax 912 ULS engines must visually inspect valve push-rod ball sockets within specified flight hour limits or within three months of the effective date, whichever occurs first. Any valve push-rod showing a black surface must be replaced before the next flight. Installation of valve push-rods manufactured between 01 May 2016 and 02 October 2017 is prohibited unless verified as unaffected.
Summary
EASA Airworthiness Directive 2018-0040 is an airworthiness directive addressing the inspection and replacement of valve push rod assemblies on SportStar RTC aeroplanes equipped with Rotax 912 ULS engines. It targets specific valve push-rod assemblies, rocker arms, and related parts that may have manufacturing defects leading to engine power loss. The directive mandates inspection and possible replacement of affected parts to ensure continued safe operation.
What changed
This new airworthiness directive introduces a one-time inspection requirement for valve push-rod assemblies and associated rocker arms on affected engines installed in SportStar RTC aeroplanes. It prohibits installation of valve push-rods manufactured between 01 May 2016 and 02 October 2017 unless verified as serviceable. The AD also requires replacement of any parts showing signs of wear or damage identified during inspection.
Why it matters
This directive is critical for aviation professionals because it addresses a potential engine failure risk caused by defective valve push-rod assemblies, which can lead to rough engine operation and power loss. Operators and maintenance organizations must comply to prevent forced landings and ensure aircraft safety. Compliance ensures regulatory adherence and reduces the risk of in-flight engine malfunctions.
Get the next one by email
New ADs and bulletins for Evektor, Spol. S R.O. SportStar RTC and SportStar RTC, summarized like this page, every Monday.