41 CFR § 102-33.270
What is the process for reporting an excess aircraft?
June 9, 2020
To report an excess aircraft, you must:
(a) Report electronically to GSA's Federal Disposal System GSAXcess® (http://gsaxcess.gov). For information on reporting excess property electronically, contact the Federal Acquisition Service (FAS), Pacific Rim Region (Region 9) at (415) 522-2777; and
(b) Submit a Standard Form (SF) 120, Report of Excess Personal Property (see §102-2.135), to: General Services Administration, Federal Acquisition Service, Pacific Rim Region, 450 Golden Gate Avenue, 4th Floor West, San Francisco, CA, 94102-3434.