What was found
IAD/HPN - FLT 6283 - DURING LANDING ON 10-30-97 AT 1906 HOURS, THE FLIGHT CREW EXPERIENCED A DISCREPANCY WITH THE CAPTAIN'S LEFT BRAKE PEDAL SHOWING BRAKE PRESSURE, BUT THE BRAKES WERE NOT WORKING. COPILOT'S BRAKES WORKED FINE. AIRCRAFT FERRIED TO IAD WHERE MAINTENANCE FOUND THE LT MAXARET LEAKING. MAINTENANCE REMOVED AND REPLACED THE GASKETS IAW PRESCRIBED MAINTENANCE PROCEDURES. ALL CHECKS WERE ACCOMPLISHED. AIRCRAFT RELEASED FOR SERVICE. REF: OPER CONTROL NR: VTZA97609.