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We soon learned why--the parts can be installed backward, resulting in an upside down blade fold bolt.
Knives where the blade folds into the handle, like a Swiss Army knife, aren't illegal as long as the blade is shorter than 3in (7.
Specific problems include arthritis of wing fold, blade fold and control surface actuation mechanisms; canopy hazing; landing gear strut cracks and leaks; leaking seals for hydraulics and fuel tanks; popped and worn out fasteners; environmental control system inadequacy; and heat-dirt-contamination effects.
4/19/2011 SH-60B Main rotor blade damaged during fold evolution using blade fold test set.
Called "the toughest combat aircraft in the world," the Boeing AH-64D Apache Longbow multi-role combat helicopter has a newly designed main rotor blade fold system which adds flexibility to the U.
Smiths Aerospace has been awarded a contract to supply the integrated blade fold and pin puller actuator subsystem for Canada's 28 new Sikorsky H-92 maritime helicopters, designated the CH148 Cyclone by the Canadian Forces.
Selection of the S-76C, equipped with twin Turbomeca Arriel 1S1 engines, manual blade fold and a sophisticated Honeywell SAR package, was based on an intensive agency study of the attributes of S-76 SAR helicopters operated by the Hong Kong Government.
In addition to the HUMS, Smiths supplies the following systems on various H-60 models: --Voice and Data Recorders, Rotor Analysis and Diagnostic Systems, Rocket Interface Units, Ethernet Switching Hub (Michigan) --Health & Usage Monitors (Southampton, UK) --AFCS/ Module/ Fuel Management Panels (New York) --Interference Blanker Units (Florida) --APU Generators (Ohio) --Data Transfer Systems, Common Cockpit Keyset (Maryland) --Coax Cables (Times Microwave, Connecticut) --Landing Gear, center console & step (California) --Automatic Blade Fold Actuation (New Jersey) Note to editors: About the UH-60L Black Hawk: Produced by Sikorsky Aircraft Corporation, based in Stratford, Connecticut, the UH-60 was made to transport soldiers into combat.