Kamatics Shaft and Coupling Overhaul/Exchange Program Announcement

December 22, 2010- MD Helicopters Announces Kamatics Shaft And Coupling Program.

…

“MODELS AFFECTED: MD Helicopters, Inc. (MDHI) all Model 369H, Model 369HE,
Model 369HM, Model 369HS, Model 369D, Model 369E,
Model 369FF, Model 500N and Model 600N Helicopters and
all spares inventory.”

…

“MDHI, in cooperation with Kamatics Corporation (Kamatics), has determined that all dash
numbers of the 369D25515 and 500N5215 interconnect shafts and 369D25501 tail rotor
driveshaft couplings should be returned for scheduled disassembly and overhaul, since only
exterior inspections are authorized by the MDHI Helicopter Maintenance Instructions (HMI)
and Kamatics. The new overhaul program is being implemented because the parts are key
components of the aircraft drive train with no life limits and, for continued safety, should be
fully inspected at regular intervals. There have been no reports of any issues with hardware in
the field or instances of the existing inspections being inadequate.”

Click here to view original source document: Kamatics Shaft Program