AT 2234 THE PLT WAS ISSUED A VECTOR TO THE INITIAL APPROACH FIX FOR THE ILS RWY 9 APCH. HE WAS ALSO ISSUED THE FOLLOWINGWX "...STEWART WEATHER THIRTY MINUTES AGO IS ESTIMATED ONE THOUSAND OVERCAST SIX MILES IN LIGHT RAIN AND HAZE." AT 2238 THE PLT WAS ADVISED TO EXPECT A 25-30 MINUTE DELAY & WAS CLEARED TO HOLD. AT 2306 THE PLT OF A B-727 LANDING ON RWY 9 REPORTED BREAKING OUT AT 400 FT. AT 2308 THE PLT WAS CLEARED FOR THE APPROACH & RESPONDED AFFIRMATIVE WHEN ASKED IF HE HAD CURRENT WX INFORMATION. THE ACFT CRASHED APPROXIMATELY 5,000 FT FROM THE APPROACH END & AN ESTIMATED 1,500 FT RIGHT OF THE EXTENDED CENTERLINE OF RWY 9. ON 7/2/81 THE PLT FAILED HIS INITIAL ATP FLT EXAM DUE TO UNSATISFACTORY ILS APPROACHES. ON 1/21/82 DURING A 135 CHECK THE PLT'S ILS APPROACH WAS "VERY UNSATISFACTORY" & AS A CONSEQUENCE THE PLT WAS DISAPPROVED FOR OPERATION UNDER IFR.