11.1m (36ft) Span Vehicle Maintenance Workshop: Heli-Door

This is the smallest military aircraft shelter in the EFASS range, initially designed to accommodate small helicopters. This aircraft, vehicle and maintenance shelter may be the baby of the range but it is constructed using the same roof and leg elements as the 20.4m (67ft) Span Rubb Military Building and built to the same high specifications as its two bigger brothers. During its development, the Heli-Door came onstream and the first door was prototyped on this shelter using standard roof elements as door horizontals, providing an almost full width opening. The project created a lot of interest from visiting British and American military personnel, prompting the addition of two more options, armour and crane. Armour was developed in partnership with QinetiQ North America's Last Armour Division, providing a fast installation and removal of the protective panels to the inside of the shelter walls. The crane enables heavy maintenance and engine changes to both aircraft and military vehicles in theatre, while the 10m wide Heli-Door allows clear and easy access.