Programmable Airline Reservation System

application (PARS) An IBM proprietary large scale airline

reservation application, executing under the control of IBM's

ACP (and later its successor, TPF).

In the early days of automated reservations systems in the

1960s and 1970s the combination of ACP and PARS provided

unprecendented scale and performance from an on-line

real-time system, and for a considerable period ranked among

the largest networks and systems of the era.

IPARS was the international version.

(1999-01-18)