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Old 16th Nov 2011, 18:23
  #162 (permalink)  
squib66
 
Join Date: Sep 2008
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Have all the real engineers retired already?
I'm reliably informed that almost all the S-76 / H-60 gearbox designers had left by the time the S-92 was underway.

There has been another AD warning of landing gear collapse.

...limiting maximum rolling groundspeed for a normal landing or takeoff from 65 knots to 50 knots for helicopters with a certain serial-numbered landing gear retract actuator (actuator).

This amendment is prompted by a report of a main landing gear that would not retract. The manufacturer reports that certain actuators were manufactured with down-lock keys that did not meet the specified minimum hardness requirements.

This condition, if not corrected, could lead to a landing gear collapse following a roll-on landing that exceeds 50 knots groundspeed. These actions are intended to prevent collapse of a landing gear and subsequent loss of control of the helicopter.
http://rgl.faa.gov/Regulatory_and_Gu...2011-16-04.pdf

Nothing new but a sign of how long it takes the FAA still to issue ADs. The ASB was out in May 2008 (42 months ago). Wasn't there a run on landing at about that time in Norway too after a tail rotor failure?

If you are interested in the thinking of Sikorsky's Director of Safety look here:
http://www.oilandgasuk.co.uk/downloa...orporation.pdf
I pass no comment, others might choose to share their views.
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