|
The Eurocopter EC-135 T1, N456JC. L to R, Dave Georgic, George Fuentes, Rick Gerth, Chris Cuneo (me), Cambren Davis (the Eurocopter Tech rep) and Phil Yeager. This picture was taken during last years 12 month, periodical, intermediate and 3 year inspection. It was quite a large inspection, requiring nearly 3 weeks of long hours. On our early production blades, we found minor manufacturing defect related cracks (550 hours since new), so we purchased 4 new blades. The list price is $127,000 each, however after a bit of negotiation, Eurocopter was willing to take the old ones in on trade. We also performed a large number of service bulletins and a fenestron tail rotor “fan” detailed inspection. I prepped the T/R blades and applied the Teflon based coating on the bearing surfaces, along with installing new bearings. This brings the fan back to new clearance specifications for SMOOTH operation! The rotor head is a rigid design, so the ride is a bit firm and fighter jet responsive. It takes serious care to do a quality track and balance on this design, as 5mm is the maintenance manual track limit. But I have found the blades should be within 2mm for a good ride. Unlike some helicopters, this design does not respond well to having a single blade slightly out of track. The autopilot on this ship is a first generation IFR capable design and also requires significant maintenance to perform properly. A well maintained EC-135 is a great performing helicopter. Every once in a while, I actually get to fly it! What fun.
|