PC CITASAN is a software program that contains a database of over 4500 references to scientific literature on the impact of aircraft noise and sonic booms on humans, animals, structures, and noise modeling. It contains bibliographic data and a suitability rating and a controversiality rating for each article. Some articles also have an abstract and an independent review. The data were updated as of Nov 1994. The PC CITASAN database can be searched using four different pre-defined screens, one for each impact category. The search can be global, by author, by key words in the title, or by year of publication. The program was developed for use by USAF personnel preparing environmental assessment documents. However, it has broad application to other government, civilian, academic, and commercial organizations. The program was originally written to operate under the UNIX operating system using ORACLE as the database. It has been completely re-written to run under the Windows environment on a PC as a stand alone system and does not require a dedicated database. It will be distributed on a CD-ROM with a hardcopy user's manual.