Airworthiness Directives; Eurocopter France (Eurocopter) Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2013-10-01 · Effective 2013-10-16 · 78 FR 60188
Document
Document number
2013-23580
Federal Register citation
78 FR 60188
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Eurocopter France (Eurocopter)
Publication date
2013-10-01
Effective date
2013-10-16
FAA docket
Docket No. FAA-2013-0807
Abstract
We are adopting a new airworthiness directive (AD) for Eurocopter Model AS332C, AS332L, AS332L1, AS332L2, and EC225LP helicopters. This AD requires replacing certain serial-numbered main gearbox (MGB) bevel gear vertical shafts because they are no longer airworthy. Also, this AD requires certain inspections of each MGB bevel gear vertical shaft (shaft) for a crack. Also, this AD requires if there is a crack, replacing the shaft with an airworthy part before further flight. This AD is prompted by two incidents of emergency ditching after warning indications of loss of MGB oil pressure. These actions are intended to detect a cracked shaft, which could result in loss of MGB oil pressure, loss of the MGB lubrication system, and subsequent loss of control of the helicopter.