Wednesday 26 May 99- At 0853 hrs., FAA control tower notified the Massport Fire Dept. of a Midway F-100 aircraft landing on R/W 27 with a #1 system hydraulic failure. An alert 2 with a follow was declared by fire command. Aircraft landed without incident and taxied to the gate under its own power. At 0931 hrs. the Alert 2 was terminated.