The sale of excess capacity on a business aircraft can be done in a variety of ways but FAA limitations in this area are extensive and strictly policed. The most important question is whether you, the owner, are providing the flight crew or just leasing the plane as a piece of equipment. If you provide flight crew, your options are limited. Greatest flexibility comes if you partner with a certificated charter company to operate the plane. Your next option is a time-sharing agreement as I’ve discussed in another video. Leasing without crew can be done more freely though keep in mind that the FAA’s concern is the true substance of the transaction. It doesn’t involve collaborating with another party to provide plane and crew in effect as a package. If so, the FAA would likely view it as commercial and require an air carrier certification.