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.