Rotors Flight Control – Main Rotor Actuator Single-Axis Actuators – Inspection / Replacement
Superseded. Comply with 2020-0105, which replaces this document.
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of EC135 and EC635 helicopters with affected parts must inspect these actuators within three days of the directive's effective date, report results within seven days, and replace any corroded parts within compliance times ranging from seven days to twelve months depending on actuator age and condition. Installation of affected parts is permitted only if followed by inspection and replacement as required. Prior inspections done per the original service bulletin are acceptable for compliance.
Summary
EASA Airworthiness Directive 2019-0087-E is an emergency directive addressing Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It mandates inspection and potential replacement of specific main rotor actuator single-axis actuators that have accumulated six years or more since manufacture or last overhaul. The directive aims to detect corrosion and prevent actuator tie bar failure that could lead to loss of helicopter control.
What changed
This directive introduces a one-time inspection requirement for affected single-axis actuators on EC135 and EC635 helicopters to identify corrosion and potential damage. It requires reporting inspection results to Airbus Helicopters Deutschland GmbH and mandates replacement of affected parts within specified compliance times based on actuator age and inspection findings. It also allows installation of affected parts provided they are inspected and replaced as required.
Why it matters
This directive is critical for aviation professionals to ensure the continued airworthiness and safety of EC135 and EC635 helicopters. Operators and maintenance organizations must promptly identify and address corrosion in main rotor actuators to prevent potential loss of control incidents. Compliance with this directive helps avoid operational disruptions and ensures regulatory adherence.
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