Traded Pistol for More Beer

The police said the hijacker positioned himself in a toilet from which he watched the two pilots and three flight attendants and demanded a steady supply of beer. An hour after the passengers were gone, he gave up to a police officer who refused to give the hijacker more beer unless he traded his pistol for it.

A police spokesman, Torodd Veiding, said the man had spoken bitterly of his treatment by the authorities and demanded that Prime Minister Kare Willoch and Justice Minister Mona Rokke hear his complaints personally. Both officials refused.

''We never considered yielding to his pressure,'' the Justice Minister said in a radio interview.

Special police security forces surrounded the plane, which was parked out of sight of the airport terminal. The airport was closed to all traffic during the standoff, which came at the height of Norway's midsummer holiday weekend.

A Soviet plane was hijacked on a flight to Stockholm from Oslo in 1979. In 1978, a domestic flight in Finland was hijacked for 48 hours. In 1972, Croatian extremists threatened to blow up a plane in Malmoe, Sweden.