Doc the B-twenty-nine Superfortress and the sixteen-year volunteer miracle that brought her back from the Mojave Desert

B-29 serial number 44-61748, known as “Doc,” flew again on July 17, 2016, after a 16-year volunteer restoration that consumed an estimated 300,000 hours of donated labor. Rescued from the Mojave Desert in 1987 where she had served as a ground target at the Naval Weapons Center at China Lake, Doc became only the second flying B-29 Superfortress in the world, joining the Commemorative Air Force’s Fifi. The restoration, carried out almost entirely by unpaid volunteers in Wichita, Kansas, stands as one of the most ambitious warbird projects in American aviation history.

How Did a B-29 End Up Abandoned in the Desert?

Doc rolled off Boeing’s assembly line in Wichita, Kansas, in 1944, one of nearly 4,000 B-29s built during the war. Her name came from a flight of Superfortresses at a training base, each christened after one of Snow White’s Seven Dwarfs — Doc, Grumpy, Bashful, and the rest.

After the war, the military had no use for thousands of surplus bombers. Doc ended up at the Naval Weapons Center at China Lake, California, where the Navy used her as a ground target for missile and munitions testing. She was never destroyed outright — just left to endure decades of desert sun, sandblasting wind, and neglect. Hydraulic lines dried and cracked. Rubber seals turned to powder. Wildlife moved into the airframe.

But the desert also preserved her. The B-29’s overengineered structure — its pressurized fuselage, heavy spars, and robust skin — held up remarkably well. After 40 years of exposure, the wing spars were still sound. The basic structure was repairable. The bones of the airplane were intact.

Who Saved Doc and How Did the Restoration Begin?

In 1987, Cleveland aviation enthusiast Tony Mazzolini spotted Doc at China Lake and saw what most people couldn’t: a B-29 that could fly again. At the time, Fifi was the only flying B-29 in the world — one survivor out of nearly 4,000.

Getting Doc off an active military installation required years of paperwork, permissions, and environmental reviews. Once authorization finally came through, volunteers partially disassembled the airframe and trucked major components by road across the desert back to Wichita — back to the city where she was born.

What Made the Restoration So Difficult?

The B-29 was the most complex production aircraft of World War II, and restoring one to flying condition meant rebuilding every system from scratch.

The sheer scale of the airframe — a 141-foot wingspan, a fuselage over 99 feet long, and four Wright R-3350 Duplex Cyclone engines each producing 2,200 horsepower with 18 cylinders arranged in two rows — meant nothing was small or simple.

Wing spars were inspected inch by inch using ultrasound and dye penetrant testing. Corrosion and fatigue cracks had to be evaluated individually — repaired where possible, fabricated from new material where not. Finding tooling for parts that hadn’t been manufactured since 1945 meant the volunteers often had to make it themselves. One volunteer spent an entire winter building a single bracket.

The engines required years of searching across surplus dealers, museums, and stalled restoration projects. Each R-3350 was completely disassembled — every bearing inspected, every cylinder honed, every valve lapped. The exhaust-driven turbochargers that gave the B-29 its high-altitude capability needed rebuilt turbine wheels, and finding uncracked ones was extraordinarily difficult.

The electrical system contained literal miles of wiring, all of which had to be replaced after the original rubber insulation rotted away decades earlier. Junction boxes, bus bars, and circuit breakers were rebuilt or replaced. The General Electric remote gun turret fire control system was left non-operational — too complex, too many missing components, and unnecessary for peacetime flying.

The pressurization system, which allowed the B-29 to operate above 25,000 feet, was fully restored. Getting the bleed air system from the engines to hold cabin pressure was one of the last and hardest pieces of the puzzle.

The propellers — Hamilton Standard four-bladed constant-speed units with blades over eight feet long, each sweeping a circle more than 16 feet in diameter — required complete hub overhauls, governor rebuilds, and de-icing system testing.

Sheet metal work alone took years. Thousands of rivets were drilled out and replaced. Corroded skin panels were fabricated from new aluminum sheet and formed to match original contours. The bomb bay doors were rebuilt. The distinctive greenhouse nose was refitted with new Plexiglas panels shaped to original molds.

Who Did the Work?

The restoration was carried out almost entirely by volunteers: retirees, Boeing workers coming in after day shifts, machinists, sheet metal workers, and electricians donating their weekends, vacations, and evenings. Some had actually built B-29s during the war and returned six decades later, their hands remembering work their minds had nearly forgotten.

The nonprofit Doc’s Friends was formed to manage fundraising and organization. Boeing donated hangar space and engineering support. Local Wichita businesses contributed materials and services. The project survived multiple funding crises and periods when it appeared Doc might never fly.

The volunteers tracked down original Boeing blueprints from archives, located vendors who still carried raw materials in the correct alloys, and machined new fittings on manual lathes. The restoration became a transfer of knowledge as much as a rebuilding of hardware — older volunteers teaching younger ones techniques that existed only in the hands of retired craftsmen.

When Did Doc Fly Again?

The first engine run came in 2016. Engine number three’s inertial starter wound up with its characteristic rising whine, and 18 cylinders caught with a bark and a cloud of blue smoke. Volunteers who had worked on the project for over a decade watched, many in tears.

On July 17, 2016, test pilot Charlie Tilghman lifted Doc off the runway at McConnell Air Force Base for her first flight in 60 years. Subsequent test flights addressed the inevitable squawks — a fuel leak here, an instrument reading off there — all expected with a ground-up rebuild.

Where Can You See Doc Today?

Doc flies the airshow circuit and is based at the B-29 Doc Hangar, Education & Visitors Center in Wichita, Kansas, where she can be visited between show seasons. The museum displays the names of the volunteers who made the restoration possible.

When Doc and Fifi fly in formation — two B-29s together, eight Wright radials turning — it produces a low-frequency rumble that recordings cannot capture. It is a physical sensation felt in the chest before it registers as sound.

Key Takeaways

• Doc (B-29 serial 44-61748) was rescued from China Lake Naval Weapons Center in 1987 after 40 years as a desert ground target and restored to flying condition by 2016.
• The restoration consumed an estimated 300,000 hours of volunteer labor — equivalent to one person working full-time for 150 years.
• Doc is only the second flying B-29 Superfortress in the world, alongside the Commemorative Air Force’s Fifi.
• Volunteers fabricated parts from original Boeing blueprints, rebuilt four Wright R-3350 engines, replaced miles of wiring, and restored the pressurization system that defined the B-29’s capabilities.
• The project served as a critical knowledge transfer, with wartime-era workers passing restoration skills to a new generation before those techniques were lost permanently.