Andrew J. Valles and Joseph A. VanLoy
The passenger revenue accounting (pra) system has the monumental task of accounting for each of the 60,000 or so tickets that Northwest Airlines sells each day. One function of pra is to audit each ticket to ensure that the travel agent or Northwest ticket station that sold the ticket collected the correct fare and claimed the correct commission. The fare and commission audit expert system performs the difficult task of comparing each item on the ticket against the diverse and complex rules of airline fares and commission programs to detect any discrepancies. Discrepancies are flagged, and detailed remarks are created by the expert system for review by a revenue accounting staff member.