The following is a chronology of events in the hijacking of TWA Flight 847, based on Algiers time. Friday, June 14

* 10:10 a.m. -- Two gunmen commandeer TWA Flight 847 carrying 153 passengers and crew, mostly Americans, en route from Cairo to Rome, immediately after takeoff from Athens aiport. Hijackers order the pilot to fly to Beirut.

* 11:57 a.m. -- Airliner lands at Beirut International Airport. Hijackers threaten to kill passengers if fuel not provided immediately. Plane refuels. Hijackers release 19 women and children and order pilot to fly to Algiers.

* 1:30 p.m. -- Airliner takes off from Beirut for Algiers, a distance of about 1,800 miles.

* 3:30 p.m. -- Aircraft arrives in Algiers. The hijackers issue list of demands, including release of Shiite Moslems from Israeli prisons, and threaten to execute their hostages. Another 21 passengers, mostly American women and children, are freed.

* 8:25 p.m. -- Airliner takes off and heads for Beirut. Saturday, June 15

* 2:20 a.m. -- TWA Flight 847 returns to Beirut. One of the hostages is shot in the head and his body thrown onto tarmac. Amid confusion, more terrorists are believed to have scrambled aboard the plane to join the hijackers.

* 5:40 a.m. -- Airliner leaves for Algiers.

* 7:50 a.m. -- Plane lands at Algiers airport. About two hours after landing, gunmen release three hostages -- two women and a man. Two Algerian officials board aircraft for negotiations. An accomplice to the hijackers, Ali Atweh, 21, arrested at the Athens airport Friday, is flown to Algiers and traded for Greeks aboard plane. TWA spokeswoman reports 53 hostages, mostly women and children, are freed.

* 5 p.m. -- Hijackers still holding male passengers and three crew members at Algiers airport. TWA reports that from 12 to 15 heavily armed hijackers are aboard.

* 6:50 p.m. -- Hijackers free 10 more men. Later, a negotiating team from the International Committee of the Red Cross in Geneva arrives. Sunday, June 16

* 1:45 a.m. -- Hijackers release three more hostages.