Ransome Airlines is ending its 12-year association with USAir as an Allegheny Commuter on June 1 and will begin marketing its air services under its own name.

J. Dawson Ransome, president of Ransome Airlines, said his airline's move to end its formal relationship with USAir was an inevitable step in Ransome's growth and would enable it to react to market shifts and opportunities. The privately-owned Philadelphia-based regional airline currently has extensive services to Philadelphia from Washington National and Dulles airports, with connecting services beyond to other Northeastern cities.

Ransome operates a fleet of six of the quiet de Havilland Dash-7s and nine Nord 262s to a dozen airports between Washington and Boston.

The loss of Ransome as an Allegheny commuter still leaves USAir with nine other small carriers in its program. USAir's commuter system generally provides its flights at major hub airports with passengers who have been collected by the commuters from smaller airports lacking adequate traffic to support the use of jet aircraft.

The flow works both ways; the program also benefits the smaller carriers by feeding them passengers from USAir flights. The program has been very successful, and recently Pan American World Airways said it was in the process of setting up a similar program to feed its flights.

Although it will not have a contractual arrangement with USAir after June 1, Ransome said it would continue to keep schedules that are convenient for connecting flights on USAir.

However, Ransome has signed a new agreement with Delta Airlines, under which Delta will provide ground services, reservations, and customer services at six airports that are served by both Ransome and Delta. Under the contract, Ransome will pay Delta a fee for each passenger it handles. However, unlike the past arrangement with USAir, Delta will have no control over where Ransome flies.