Spirit Airlines Maintenance Hangar
An aviation maintenance facility is delivered under extreme schedule and climate pressure, creating a controlled environment that keeps aircraft service moving without disruption or compromise.
Project
Overview
Located at Detroit Metropolitan Airport in Michigan, this 126,840-square-foot maintenance hangar and support facility was delivered to meet an urgent operational need for Spirit Airlines.
The airline required a new maintenance environment on an accelerated timeline, demanding immediate progress upon contract award and absolute certainty in execution. The project moved forward with no room for delay.
The facility was designed to support the airline’s growing fleet and maintenance demands while maintaining continuous airfield operations.
The hangar bay can house up to three Airbus A321 aircraft simultaneously, with maintenance and support buildings positioned on three sides to create a fully integrated service environment.
A 318-foot wide by 44-foot-high hangar door opening spans the front elevation, utilizing four free-floating rolling doors to accommodate aircraft movement with precision and control.
Structural performance was central to the solution. A 31-foot-deep box truss system frames the clear span of the hangar, supported by 14-foot-deep trusses spanning front to back. This approach delivered the expansive column-free space required for aircraft maintenance while maintaining structural efficiency. The design also addressed one of the project’s most significant challenges: completing erection and enclosure ahead of Michigan’s extreme winter conditions.
To manage schedule risk, the support shops and office areas were engineered as independent structures from the hangar itself. This strategic decision allowed steel erection and enclosure to proceed without constraint, optimizing sequencing and protecting the schedule. It ensured that the hangar could be enclosed quickly, safeguarding progress during critical construction phases.
The exterior is clad with insulated metal wall panels, providing thermal performance and durability in a demanding climate. The roof is a standing seam metal roof system installed over cold-formed zee purlins and blanket insulation, finished in a custom Spirit Yellow color that reinforces the airline’s identity while delivering long-term performance.
Inside the facility, technicians perform scheduled maintenance, service, repair, modification and upgrades in a controlled indoor environment. According to Jim Baumiller, director of Detroit engineering and technical support, the hangar is the largest maintenance facility by square footage at Detroit Metropolitan Airport. To put the scale in context, Baumiller noted that it is larger than a football field.
“The No. 1 focus of any airline is always safety,” Baumiller said. “Now we can do a lot of this work indoors more efficiently and in a much more controlled environment — the best environment possible.”
The hangar supports overnight maintenance and repairs for the airline’s fleet, which includes 103 aircraft, with the capacity to handle eight to 11 aircraft per evening depending on the season.
The completed facility delivers certainty where it matters most. It brings speed, safety and operational efficiency together in a single engineered solution, enabling Spirit Airlines to maintain its fleet with confidence under all conditions.
