http://www.starmet.com/spcuranum.htm
AIRCRAFT COUNTERWEIGHTS Wide body aircraft such as the Boeing 747, Lockheed L-1011, McDonnell Douglas DC-10 and Lockheed military C-130 all require the use of counter-balance weights for proper flight control. The counter-balance weights are needed on control surfaces such as ailerons and elevators. These control surfaces have insufficient surface clearance and area to accommodate lighter counter-weight materials. The high density of DU makes it ideally suited for this application. Although DU is a toxic heavy material similar to tungsten, it is completely isolated by our plating and coating process. Starmet CMI can provide both new and refurbished DU counterweights:
Reduces inventories: we offer storage with overnight delivery to meet your repair schedules Offers substantial cost savings over purchasing a new part
New Counterweights
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