PPRuNe Forums - View Single Post - Helicopter crash off the coast of Newfoundland - 18 aboard, March 2009
Old 13th Mar 2009, 17:58
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birrddog
 
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Scenario1:
Originally Posted by Special 25
I always understood that in the event of gearbox oil running out, the best policy was to land or ditch with power on, in order to overcome the increasing friction. I seem to remember a story of a Puma (332 or 330J) losing its lubrication and just making it to a deck that was close by - As they lowered the lever on landing, the blades made about 3 rotations and shuddered to a stop together with the smell of hot metal.
Scenario2:
Originally Posted by rumline
know a 212 that lost its lube...flew for about 13min before landing and upon throttle roll-off....blades siezed and spun the machine on the ground...
Would it make sense then, in the above scenarios to:
scenario1 - (Splash 25) override the governor and keep power on when lowering collective
secnario2 - (rumline) roll off power very gradually (I assume this could pose some other risks, depending on state of MGB and various temps /stresses)

i.e. in both scenarios keep one eye glued to RRPM?
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