What was found
FLT 738 FROM TOL TO SLW. SHORTLY AFTER TAKEOFF, THE CAPTAIN'S ALTIMETER AND THE ALTITUDE ALERTER FLAGGED AND THE AUTOPILOT WOULD NOT ENGAGE. THE CREW TRIED CYCLING THE CIRCUIT BREAKER FOR THE AIR DATA COMPUTER BUT IT WOULD GO OFF AGAIN AFTER ONE SECOND. NO EMERGENCY WAS DECLARED AND THE AIRCRAFT AIR TURNBACK TO TOL AND LANDED WITHOUT INCIDENT. UPON LANDING IN TOLEDO, THE NR 1 AIR DATA COMPUTER WAS REPLACED AND PITOT STATIC SYSTEM LEAK CHECK IAW B727 MM 34-12-0 AND 34-11-0. AIRCRAFT RETURN TO SERVICE.