Oct 20 (Reuters) - Unite, the union representing cabin crew at British Airways, said on Wednesday it would ballot its members on an offer to settle a year-long dispute that has brought strikes costing the airline 150 million pounds ($235 million).
Following is a timeline of events:
Oct. 5, 2009 - BA announces plan to cut 1,700 staff in Britain and freeze basic pay for cabin crew for two years.
Dec. 17 - BA secures a court ruling to halt a 12-day strike called by Unite over the Christmas holiday.
Feb. 19, 2010 - Unite loses a High Court bid to overturn changes to cabin crews' working arrangements.
Feb. 22 - More than 80 percent of the 9,000 BA cabin crew balloted by Unite back industrial action.
March 12 - Unite says its members will strike for three days from March 20 and for four days from March 27.
March 22 - BA says full year earnings expectations were unchanged as contingency plans for dealing with the three-day strike from March 20 had been successful, limiting costs to 21 million pounds.
March 27 - Unite members start second walkout in March.
April 8 - BA and Spain's Iberia sign an $8 billion merger to create the world's third-largest airline.
May 7 - Cabin crew reject the airline's latest offer.
May 10 - Unite announces three waves of strikes between May 18 and June 9.
June 9 - BA flight attendants end their latest five-day strike. Crews have walked out for 22 days so far in 2010, costing BA around 150 million pounds ($220 million).
June 28 - Unite confirms it will let members consider BA's latest offer, made on June 25.
July 20 - BA cabin crew reject the revised pay offer.
July 26 - Unite says it will take legal action against the airline over the removal of travel concessions from striking workers. BA has said it can withdraw travel perks at its discretion.
Aug. 2 - BA and Unite restart talks under the supervision of mediator Advisory, Conciliation and Arbitration Service (ACAS) in a bid to end the dispute.
Sept. 13 - BA ground staff at London's Heathrow airport vote overwhelmingly to accept a settlement in the dispute over pay and staffing levels, the GMB union says.
Oct. 20 - Unite says it will ballot members on changes made to BA's earlier offer to see if they are sufficient to settle the dispute. (Writing by Rhys Jones and David Cutler, London Editorial Reference Unit; Editing by Karen Foster)