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Aerospace Ground Support

PT90-F Series, Engine Positioning Trailer 

  • PT90-F-507     NSN: 1730-01-508-6426
  • PT90-F-509    NSN:  1730-01-560-2167
  • PT90-F-511     NSN:  1730-01-595-6401

The US Air Force photo left depicts a PT90 positioning trailer providing for the maintenance, removal and replacement of the four Pratt and Whitney engines on the C-17 Globemaster III aircraft.  It incorporates work platforms, ladders, auxiliary platforms, winches and controls required to remove and replace the aircraft engines.  It also contains electro-hydraulic systems to allow the trailer to move through 5-axis of travel to facilitate engine mating.  It contains I-beam rails which mate with various support equipment to facilitate the removal, installation and roll transfer of a cradle mounted engine.

D&D has manufactured these units under US Air Force contracts as well as the Boeing C-17 Support Program and Foreign Military Sales.