Delta Air Lines Inc. reached an agreement in principle for a new contract with its pilots, paving the way for a deal after a nine-month standoff.

The Air Line Pilots Association’s executive council soon will receive the full draft of the pact for a seven-day review, the union said by e-mail. If the council approves the accord, the membership will vote on the tentative agreement, Delta said. Terms weren’t disclosed.

The deal is an “industry-leading package of pay, benefits and work rules,” Delta spokesman Morgan Durrant said by e-mail.

The Atlanta-based carrier offered its 13,000 pilots a raise of about 27 percent over four years, the union said last month. That fell short of the 31 percent gain over three years that pilots were seeking earlier this month, down from an earlier demand for a 37 percent increase.

The two sides have been deadlocked over pay and other issues since the contract became amendable Dec. 31. They began talks under the supervision of the National Mediation Board on March 31.

To contact the reporter on this story: Michael Sasso in Atlanta at msasso9@bloomberg.net. To contact the editors responsible for this story: Brendan Case at bcase4@bloomberg.net, Tony Robinson

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Photo Credit: Delta Air Lines has an agreement in principal with its pilots union on a new contract. But it will take some time before a deal might reach pilots for a vote. Cory W. Watts / Flickr