They launch drones, use AI to analyze the images, and then have humans make the final decisions – Boeing has implemented this inspection system on the C-17’s heavy maintenance line. According to Aerospace Global News, Boeing Global Services is advancing the “Advanced Aircraft Inspection” (AAI) project at its San Antonio, Texas facility. The project combines autonomous drone flight with automated damage detection software (ADDS) for the external inspection of C-17 Globemaster III transport aircraft. According to project results released by the National Center for Manufacturing Sciences (NCMS), the system reduces inspection time by at least 40% during C-17 heavy maintenance.
In traditional external inspections, inspectors use work platforms or elevated equipment to check the exterior surfaces of the fuselage and wings section by section. AAI takes a different approach: a drone equipped with a camera flies along the aircraft, capturing images of areas that would normally require close-up visual inspection. The ADDS software then analyzes the images, marking potential damage. Finally, technicians review the marked areas to determine what work needs to be done. According to Aerospace Global News, each image is linked to a specific location on the aircraft, creating a record of the inspection that can be stored and used for comparison with subsequent inspections. The software is being trained to identify damage such as corrosion and lightning strikes, but Boeing emphasizes that the software does not provide a final conclusion, and the identification of defects and repair decisions are still made by maintenance personnel. Safety is also a factor, as reducing the need for inspectors to climb on and work at heights on the aircraft is a benefit in itself.
The NCMS results show that the C-17 heavy maintenance inspection time has been reduced by at least 40%. The C-17 is used by the U.S. Air Force and other operators for troop, vehicle, and equipment transport missions, and downtime directly affects the number of available aircraft. Reducing the inspection time by one day means the aircraft can return to service one day earlier. Travis Williams, Vice President of Boeing’s Mobility and Surveillance Aircraft Services, stated that AAI’s goal is to translate innovation into operational value, and the team is delivering measurable improvements and building a reusable capability that can be expanded as results are verified. According to Boeing, the main inspection process has been tested, and supporting guidelines for personnel training and quality checks have been developed. The San Antonio team is still refining the process in preparation for wider use.
This capability wasn't developed overnight. In 2017, Boeing invested in Near Earth Autonomy, an autonomous flight technology company, through its HorizonX Ventures. The two companies subsequently began collaborating. According to a 2023 report by Defence News, the two companies conducted autonomous inspection tests at the Joint Base Pearl Harbor-Hickam. Early trials verified the feasibility of using drones to collect images and transmit them for automated analysis. From the testing grounds to the maintenance production line, Boeing spent several years gradually improving its processes, training, and quality standards.
Although the C-17 is a military transport aircraft, this technological approach also holds reference value for civilian aircraft maintenance. According to Defensehere, Boeing's military and commercial teams are sharing experiences to pave the way for further applications in both military and commercial settings. In the civilian MRO (Maintenance, Repair, and Overhaul) sector, fuselage exterior inspections also rely on manual high-altitude access and visual inspection. The combination of "autonomous flight + damage identification + human-machine review" can be applied to this process. Once more operational data from San Antonio is released, the commercialization path for this process will become clearer, and airlines and maintenance companies that need to perform fuselage exterior inspections will have a readily available reference.