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Keeping NASA Flying: Ground Crews Ensure Aircraft Readiness

4 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

The back of a white jet aircraft’s wing and tails are seen in this image. One wheel and an attached test object, shaped like a wing, hangs from the bottom of the jet. A man in a black jacket, with yellow reflective coating, stands underneath and raises one hand to the aircraft. The man is wearing ear protection. Desert sand and mountains are seen in the background.
NASA crew chief Walt Kondracki checks an F-15 aircraft Tuesday, March 17, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California. Ground crews, made of various roles, maintain the aircraft to be ready for each mission.
NASA/Carla Escamilla

From high‑speed research flights to high‑altitude science campaigns, NASA depends on aircraft that perform at their best and the ground crews who keep them mission ready.

At NASA’s Armstrong Flight Research Center in Edwards, California, specially trained maintenance crews are essential to keeping the agency’s aircraft flying safely and reliably.

This year, NASA added two F-15s and a Pilatus PC-12 to its fleet at Armstrong. These aircraft – alongside platforms such as the high-altitude ER-2s and NASA’s newest X-plane, the X-59 – reflect a wide range of capabilities. The maintenance staff is responsible for keeping each one mission ready.

Three men, two wearing tan flight suits, and one wearing a black jacket with stripes of reflective yellow coating, walk to the right side of a jet aircraft. The aircraft faces forward and the canopy is open. Two wheels, intakes, wings, and tails are in view of the white aircraft. The aircraft sits on a concrete ramp with desert sand and mountains in the background.
NASA pilot Nils Larson, left, walks next to crew chief Walt Kondracki, right, by an F-15 aircraft Tuesday, Jan. 13, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California. In the background, NASA mechanic Tim Logan secures the cockpit inside of the F-15, and flight test engineer A.J. Jaffe stands to the right.
NASA/Christopher LC Clark

“That’s the beauty of our Armstrong maintenance teams. They adapt to any type of change,” said Jose “Manny” Rodriguez, NASA Armstrong Gulfstream G-IV crew chief. “One day you could have an instrument being loaded, and the next day it may be aircraft reconfiguration, all while other aircraft systems may need fixing. They adapt and they overcome any situation.”

Each aircraft supports a specific mission, whether it’s conducting science research, serving as a support or chase aircraft, or assisting NASA rocket launches. The aircraft fly at different speeds, carry specialized hardware, and require maintenance crews to stay agile with fast-paced changes.

To ensure NASA can make aeronautics and science advancements safely, the crews work continuously, checking on the ejection seats, filling the tanks with fuel, and changing out brakes, wheels, wiring, and hardware constantly, all of which can degrade with each flight.

Four men surround a round object attached to an aircraft wing with shelves and wiring inside. One man’s arms are inside of the object, and he is adjusting a gold-colored piece of metal equipment. The other men watch as he works on the hardware.
From left, NASA avionics technician Jesse Orellana; quality assurance employee Jose Prieto; mechanic Francisco Rodriguez; and mechanic Vincent Moreno work on an ER-2 aircraft Monday, Jan. 26, 2026, at NASA’s Armstrong Flight Research Center in Edwards, California.
NASA/Christopher LC Clark

On any given day, an aircraft may be flight-ready for a mission, undergoing scheduled maintenance or modifications, or down for longer-term care.

There are typically multiple NASA Armstrong aircraft in the air in one day. Currently, the center’s C-20A is flying in Peru and Panama, the X-59 is often  flying twice per day with a chase plane, and the center’s ER-2 is flying in Colorado, supporting the Geological Earth Mapping Experiment (GEMx). All this work is happening at the same time, and Armstrong’s skilled maintenance staff is prepping and fixing aircraft as needed along the way.

The team includes mechanics with both military and civilian backgrounds, and the job involves a lot of on-the-job training.

Maintenance crews are composed of:

  • a crew chief – the person in charge of the airplane
  • an avionics technician, who specializes in navigation, communication, and flight control systems
  • quality assurance personnel, who oversee the work being done
  • additional mechanics assigned to each airplane

After the maintenance crew ensures the aircraft is in the best condition possible, the team tows it out to the flightline, and it becomes ready for operations. The NASA pilot assigned to the mission will walk around the aircraft with the assigned crew chief for a final safety check before flight.

“There is a crew chief assigned to every aircraft,” Rodriguez said. “The crew chief is responsible for the integrity of that aircraft, and at the end of the day, his signature and the pilot’s together are what constitutes that the aircraft is safe for flight.”

Maintenance crews track each flight to help ensure it completes the mission without returning early. If an aircraft does return to base early, the maintenance team stands ready. When it lands, the crew is right there again, helping the research team complete the mission and fixing whatever is needed to stay nimble and ready for the next flight.

“It’s difficult at times to work with different airplanes from both the civilian and military sides, but it’s very rewarding to see that we have the capability and the expertise to keep these aircraft flying,” Rodriguez said.

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There’s No Place Like NASA’s New X-59 Hangar Home 

4 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

A white and blue jet airplane is parked in front of a building with large sliding doors and a NASA logo centered on the forward wall. The building is the new X-59 hangar.
NASA’s X-59 quiet supersonic airplane sits parked in front of its new hangar home at the agency’s Armstrong Flight Research Center in California. The facility originally was constructed in 1968 and for nearly 60 years has hosted a number of research aircraft and programs.
NASA/Christopher LC Clark

There’s no sign reading “home sweet home” in the hangar where the X‑59 now sits, but the sentiment is unmistakable among those tending to the quiet supersonic aircraft.

Located at NASA’s Armstrong Flight Research Center in Edwards, California, the X-59 hangar was built in 1968 but looks like new thanks to a full renovation and modernization. While the X-59 was being assembled in Palmdale, California, workers at NASA Armstrong gutted the hangar, adding new electrical wiring, a fire suppression system, office space, air conditioning, and other safety features.

“The whole team is incredibly proud of what we’ve accomplished in preparing this new home for the X-59,” said Bryan Watters, the NASA project manager at Armstrong who led the renovation effort. “The fact we could take a 1960s hangar and modernize it for use by a 2020’s X-plane is very special.”

The X-59 is the centerpiece of NASA’s Quesst mission to enable a new era of commercial supersonic air travel over land by reducing the sound of typically loud sonic booms to a much quieter sonic thump.

Home hunting

When NASA test pilot Nils Larson successfully took the X-59 into the air for the first time on Oct. 28, 2025, he flew from the Lockheed Martin Skunk Works assembly site in Palmdale to nearby NASA Armstrong, from where test flights have continued to make progress.

From the beginning of the program, knowing the X-59 would eventually need a new residence at NASA Armstrong, Quesst managers were on the hunt for somewhere to house the quiet supersonic demonstrator.

Like anyone looking for the ideal place to call home, the team made sure there would be enough space for the airplane and all its support equipment. But with the experimental jet measuring at just under 100 feet long and 30 feet wide, there were few options.

“We had to find a hangar that was long enough so that part of the X-59 wouldn’t hang outside, exposed to the elements,” Watters said.

Building 4826, as the hangar is officially designated, turned out to be the choice spot. “It was basically stripped down and gutted so that essentially it was just structural steel with siding. From that state it was rebuilt,” Watters said.

The feature they are perhaps most proud of is the hangar’s new floor. Covering more than 32,000 square feet, it is coated with epoxy that prevents any spills from seeping into the concrete.

From the hangar’s office windows, the view of the hangar floor can include the F-15 research jets that will be used as chase planes to support X-59 flights in the coming months. The renovation faced challenges along the way, chief among them being supply chain issues stemming from the COVID-19 pandemic. But there were some incredible, unforgettable moments too.

Circa 1990
Nov. 2025
A white fighter jet turned into a research aircraft with red and blue trim is parked inside a NASA hangar.
On loan to NASA from the Air Force, an F-15 Eagle fighter jet was the focus of the Short Takeoff and Landing/Maneuver Technology Demonstrator research program, which concluded in 1991. The aircraft is seen here inside Building 4826, a hangar at NASA’s Armstrong Flight Research Center that was renovated and began use in 2025 as home for the X-59 quiet supersonic technology demonstrator.
NASA
A blue and white supersonic jet with red trim sits inside a newly renovated hangar.
NASA’s X-59 quiet supersonic technology demonstrator aircraft is seen parked inside its new hangar home at the agency’s Armstrong Flight Research Center in California.
NASA/Christopher LC Clark
A white fighter jet turned into a research aircraft with red and blue trim is parked inside a NASA hangar.
On loan to NASA from the Air Force, an F-15 Eagle fighter jet was the focus of the Short Takeoff and Landing/Maneuver Technology Demonstrator research program, which concluded in 1991. The aircraft is seen here inside Building 4826, a hangar at NASA’s Armstrong Flight Research Center that was renovated and began use in 2025 as home for the X-59 quiet supersonic technology demonstrator.
NASA
A blue and white supersonic jet with red trim sits inside a newly renovated hangar.
NASA’s X-59 quiet supersonic technology demonstrator aircraft is seen parked inside its new hangar home at the agency’s Armstrong Flight Research Center in California.
NASA/Christopher LC Clark
Circa 1990
Nov. 2025

past and present

Hangar Updated to Continue Hosting Historic Research

This NASA hangar at Armstrong Flight Research Center originally was constructed in 1968 and since then has hosted a number of history-making programs. Compare the two images above to see how the hangar looked during the late 1980s when it hosted an F-15 research aircraft (left), and beginning in 2025 after it had been renovated and modernized to host the X-59 quite supersonic technology demonstrator aircraft.

Moved in

With X-59 now flying regularly and comfortably settled into its new digs, the Quesst team is gauging its performance on the way to quiet supersonic flight.

“This is truly a great time for Quesst and the X-59,” said Cathy Bahm, NASA’s project manager for the Low Boom Flight Demonstrator. “It’s also still a little surreal to be able to just walk down from your office and see the airplane in our hangar.”

For more than a year, the hangar refurbishment team worked through every detail of the X-59’s new home to make sure it would be safe and sound. But actually seeing the aircraft occupy that space is an adjustment for them, too.

“We’ve looked at X-59 models on our desk for years and then, you know, there’s the real thing right in front of us, in a hangar that we renovated,” Watters said.

A real thing in the hangar – and streaking across the California desert sky. The X-59’s transition from an idea into a working aircraft is a testament to the teams that help build out every aspect of its infrastructure.  

NASA’s X-59 is supported under the agency’s Aeronautics Research Mission Directorate.

About the Author

Jim Banke

Jim Banke

Managing Editor/Senior Writer

Jim Banke is a veteran aviation and aerospace communicator with more than 40 years of experience as a writer, producer, consultant, and project manager based at Cape Canaveral, Florida. He is part of NASA Aeronautics' Strategic Communications Team and is Managing Editor for the Aeronautics topic on nasa.gov. In 2007 he was recognized with a Distinguished Public Service Medal, NASA's highest honor for a non-government employee.

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