FAA Issues Airworthiness Directive for Airbus Helicopters EC135 Series
The FAA has issued an Airworthiness Directive for the Airbus Helicopters EC135 and EC635 series requiring updates to rotorcraft flight manuals to mitigate potential main gearbox oil-loss indication issues, effective October 13, 2026. Operators must implement these revisions to ensure compliance and enhance flight safety.
- Published date: 15-10-2026 10:03 AM
The Federal Aviation Administration (FAA) has issued a final Airworthiness Directive (AD) affecting the Airbus Helicopters Deutschland GmbH EC135 and EC635 series. This directive mandates revisions to the rotorcraft flight manuals to address potential issues related to the main gearbox oil-loss indication system.
The AD aims to enhance operational safety by ensuring that flight crews are informed of updated procedures and limitations concerning main gearbox oil indications. The directive will be effective starting October 13, 2026.
Operators of the affected helicopter models are required to comply with the new manual revisions to maintain airworthiness and conformity with FAA regulations. This measure reflects the FAA's ongoing commitment to maintaining the highest safety standards in rotorcraft operation.