Philip J. Bakes, former general counsel of the Civil Aeronautic Board, will be joining Texas Air Corp., the parent company of Texas International Airlines, in a senior management position, industry sources said Friday.

Since last fall, Bakes, 34, has been a deputy campaign manager in the Kennedy for President campaign. Before going to work at the CAB in 1977 when Alfred E. Kahn was chairman, Bakes worked for three years as counsel on Senate Judiciary subcommittees.

From 1974 to 1977, Bakes was assistant chief counsel of the Kennedy-headed Administrative Practices and Procedure Subcommittee and played a key role in the hearings Kennedy held on the Civil Aeronautics Board.

After that, he was special counsel to the Senate Subcommittee on Antitrust and Monopoly that Kenney headed.

Before joining the Kennedy staff, Bakes was on the Watergate special prosecution force of the Justice Department.

By seeking the right recently to land and take off at both Washington's National Airport and New York's LaGuardia Airport, the Texas company Bakes is joining has raised speculation in the airline industry that it may be planning to enter the market with new lowerfare competition to the Eastern Airlines shuttle. Airline officials declined comment yesterday both on whether Bakes was joining the Texas firm and on any future plans they have for air services in this area.