Helikopterulykken - Særdeles spesielt innhold i en Emergency Alert Service Bulletin fra Airbus Helicopters datert i dag

Det har lenge gått rykter om en alvorlig hendelse under transport av den MGB som ble montert inn i ulykkesmaskinen. Denne transporten er helt klart Airbus Helicopters ansvar Det tilligger SHT Luftfart å vurdere om hendelsen har hatt betydning for ulykken. (Red.)

This document is available on the internet: http://tinyurl.com/jta7l67

EMERGENCY

ALERT SERVICE BULLETIN

The investigations conducted following the accident of an EC225 LP helicopter in Norway on April 29, 2016 have revealed deteriorations on a second stage planet gear of the epicyclic module. It has to be determined if this was a contributing causal factor or a consequence of a different causal factor.

Following these observations, and although analyses are ongoing, Airbus Helicopters introduces the

following precautionary measures for helicopters which are not subject to EASA Airworthiness DirectiveNo. 2016-0104-E:

- Inspection of the MGB oil filter and chip detectors after the last flight of the day. The purpose of this measure is to reinforce the monitoring of the MGB epicyclic module.

- Identification of the epicyclic modules which have been involved in an unusual event since new or

Complete Overhaul, for a return for Complete Overhaul. This measure is introduced because the MGB of the helicopter involved in the accident had been subject to a shock impact during road transport a few months previously.