EASA SIB 2019-06
WITHDRAWN - REPLACED BY EASA AD 2019-0087-E
Summary
EASA Safety Information Bulletin 2019-06 is an airworthiness bulletin addressing Airbus Helicopters Deutschland EC135 and EC635 models. It informs operators about a reported issue involving a cracked and displaced tie bar inside the piston of the longitudinal single-axis actuator of the main rotor actuator. The bulletin provides inspection and reporting instructions to assess corrosion and potential damage.
What Changed
This bulletin introduces a one-time visual inspection requirement for the main rotor actuator's single-axis actuators on affected EC135 and EC635 helicopters. It also requests operators to report inspection results to Airbus Helicopters Deutschland to support ongoing investigations. The bulletin does not mandate corrective actions or an Airworthiness Directive at this time but anticipates possible future updates based on inspection outcomes.
Why It Matters
This information is critical for aviation professionals to proactively identify potential mechanical issues that could affect flight safety. Operators and maintenance organizations can prevent further damage or incidents by performing the recommended inspections and reporting findings. Compliance teams should monitor for any subsequent Airworthiness Directives that may arise from this investigation.
What To Do
Operators of Airbus Helicopters Deutschland EC135 and EC635 helicopters should perform the one-time visual inspection of the main rotor actuator single-axis actuators as detailed in Airbus Helicopters Alert Service Bulletins EC135-67A-039 and EC135H-67A-011 dated 08 April 2019. Inspection results must be reported to Airbus Helicopters Deutschland following the instructions provided. No mandatory compliance deadline is specified, but prompt action is recommended.