Megadoor – Civil Aviation: Alpha Flying, Inc., USA
Civil Aviation:
Alpha Flying Inc., USA
New hangar door, energy efficiency

Megadoor has proven to be the most energy-efficient hangar door in the world

Alpha Flying, Inc. is one of the nation’s largest aircraft fractional ownership programs. The program, called PlaneSense, operates 34 Pilatus PC-12 turboprop planes throughout the eastern half of the United States. They arrange the scheduling, maintenance, crewing and other administrative services that support the PlaneSense program. Alpha Flying decided to consolidate operations from two other airports to their new 40,000 ft2 (3,716 m2 )hangar and 44,000 ft2 (4,088 m2 )office and support space built at Pease International Airport in Portsmouth, New Hampshire.

Megadoor – Civil Aviation: Alpha Flying, Inc., USA

The client first learned about Megadoor after seeing an installation at Denver Jet Center in Centennial, Colorado. Thinking the Megadoor might be a good fit for their new facility, they called Megadoor to arrange for the design team to visit a local installation. A group of eight, including representatives for Pro Con Inc, the design-build contractor, toured the Rhode Island Air National Guard Megadoors and grilled the Base Civil Engineer about the door system’s performance. The visit gave the group confidence to switch from traditional bottom rolling doors favored by some team members to the Megadoor.


  • Durability – The Megadoor is engineered to be simple; reducing common wear items such as rubber seals, rollers, hinges and counterbalance systems. The aluminum and PVC-coated polyester fabric construction resists corrosion and eliminates the need for painting. Finally, the vertically lifting fabric door does not utilize ground tracks, which require constant cleaning and need an expensive rail heat system to minimize ice build-up during the winter.
  • Energy Efficiency – With over 100 Arctic and Antarctic installations in 30 years, the Megadoor has proven to be the most energy-efficient hangar door in the world. 80% of energy loss on a closed hangar door is attributed to air infiltration around poor seals. The dramatically superior seals on the Megadoor reduce this air infiltration more than any other door. The Alpha Flying Megadoors were designed to allow a PC-12 aircraft to move in and out of the hangar by raising only one door leaf, minimizing conditioned air loss. In addition, the vertically operating Megadoors enable the user to open each door just enough for aircraft or vehicle movement. With this system, crews do not unnecessarily expose the top of the hangar, releasing all the warm, conditioned air. Together, these features enable a cost-effective, climatecontrolled hangar.
  • Aesthetics – Alpha Flying incorporated vast amounts of white marble flooring, 30’ high glass curtain walls and other modern finishes, greeting guests with one of the most stunning lobbies in the aviation industry. The Megadoor design and clean lines complement the modern architectural style of the facility.

“The driving force in our strategy was durability, energy efficiency and modern technology. All the aspects deliver cost reductions and savings. However, It is very difficult to combine cost effectiveness, speed and beauty. A lot of energy was expended in reconciling these potentially counteracting directives.” - George Antoniadis, President and CEO of Alpha Flying, Inc.

Challenge and solution


  • Durability – Build a facility that focused on minimizing life-cycle costs.
  • Energy Efficiency – Cost-effectively climate control the hanger during cold New Hampshire winters.
  • Aesthetics – Complement and enhance Alpha Flying’s image with a stylish, modern facility.

Megadoor Provided:

  • Hangar door design and facilitated the structural integration of the door system with the building.
  • (2) 130' × 28' (39.6 × 8.5 m) 2-part door system outfitted with retractable mullion pins.
  • Installation and commissioning.