Tracks stretch out from the McLean Station in Fairfax County. The station is part of the Silver Line extension. (Matt McClain/ The Washington Post)

The board of directors of the Metropolitan Washington Airports Authority is scheduled to meet Wednesday — just a week after officials announced another delay in completion of the first phase of the $5.6 billion Silver Line rail extension.

Officials have yet to set a date when the project will be completed and ready to be turned over to the Washington Metropolitan Area Transit Authority, but the issue is likely to generate questions from board members who are expected to be briefed on the situation at their last regularly scheduled meeting of the year.

The board is also expected to take up the authority’s 2014 budget.

MWAA officials originally had hoped to complete the rail line, which includes four stops in Tysons Corner and one in Reston, early this month. But in late November, during tests of the automatic control system, it became clear to officials that changes needed to be made to the software that runs the critical safety system.

The announcement of the delay, the second in six months, prompted some concern among Virginia’s top elected officials including Sen. Mark Warner (D), Sen. Tim Kaine (D) and Rep. Gerry Connolly (D). While all say safety is paramount, they expressed frustration at the delays.

We will be live tweeting highlights of the meeting. Follow @loriara for those updates.