Gomer Pylot Posted December 8, 2005 Report Share Posted December 8, 2005 Is anyone doing the stick-jump test after every start, or before every takeoff? Our checklists only call for it on the first start of the day, during the complete systems checks. In light of the recent NTSB report on the Copterline accident in the Baltic, it seems to me that more frequent checks may be prudent, especially considering that it only takes a couple of seconds to do it. Anyone else care to chime in with your practices and/or experiences? Quote Link to comment Share on other sites More sharing options...
Eric Hunt Posted December 9, 2005 Report Share Posted December 9, 2005 I do the stick-jump test after every start - it only takes 5-10 seconds to do and gives a bit more confidence in the system. But also, our machine is relatively young in hours and nowhere near the servicing requirements yet. Quote Link to comment Share on other sites More sharing options...
AndrewT Posted December 10, 2005 Report Share Posted December 10, 2005 What is a stick jump? Quote Link to comment Share on other sites More sharing options...
Eric Hunt Posted December 10, 2005 Report Share Posted December 10, 2005 What is a stick jump?It is a test for the S76 to ensure that there is no feeling of a "jump" when the hydraulic system is switched from Both to Sys 1 to Sys 2 and back to Both. If there is a jump, it could indicate binding in one of the servo actuators. A recent crash in Finland (? or Iceland?) may have been caused by a servo extending to full range and not retracting, and such a problem should have been preceded by binding. Perhaps... Quote Link to comment Share on other sites More sharing options...
ascott20 Posted December 11, 2005 Report Share Posted December 11, 2005 Our checklist only calls for it on the first flight of the day, but I can definitely see the reason to do it prior to every T/O. Can't imagine having a servo lockup in flight would be anything too fun. Quote Link to comment Share on other sites More sharing options...
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