News: News

14 June 2017


News: Airbus Helicopters Alert Service Bulletin and EASA Airworthiness Directive issued

On 13 June 2017, Airbus Helicopters issued Alert Service Bulletin (ASB)  AS365-05.00.78 and ASB EC155-05A034. You can log in and access the ASB’s on the Airbus Helicopters Technical Information Publication on Internet (T.I.P.I.) website.


Airbus has released the following statement and EASA has issued an Airworthiness Directive.


Airbus Helicopters Statement
During the investigation into the 2016 H225 accident, one of two types of planet gear was identified as generating higher surface pressures in the main gearbox. As part of the protective measures developed and approved with the European Aviation Safety Agency (EASA) to ensure safe operation of the H225/AS332 L2 fleet, this type of planet gear has been permanently removed from service.


In pursuit of its commitment to ensuring total safety across all its products, Airbus Helicopters has reviewed its range of helicopters in regard to this particular issue.


As a result, Airbus Helicopters has decided to implement a protective measure related to planet gears on the Dolphin family (AS365/565/H155) so that all Dolphins are equipped with a single type of planet gear.
Airbus Helicopters has decided to take this measure to provide additional safety.


As of today, the Dolphin fleet has logged more than six million flight hours, and no accident related to these planet gears has ever occurred.