SMT HAS NAVIGATION PROBLEM AND SHOOTS MISSED APCH.

Narrative

APCH RWY 22 ILS EAU POS (11 MI ARC) EAU. LOC DID NOT COME IN (INDICATE PASSAGE). NOTICED COMPASS LOCATOR PASSAGE; TURNED TOWARDS LOCATOR. REQUESTED MISSED APCH BECAUSE OF NAV PROB. ZMP ASKED POS. SWITCHED TO #1 NAV. GAVE POS. ALL FREQS WERE TUNED AND IDENTED. THERE WAS NO NAV FLAG. NAV DIFFICULTY (CDI NO SENSING) WAS DISCOVERED. SWITCHED TO #2 NAV. AT THIS TIME CENTER LECTURED ABOUT POTENTIAL PROB BECAUSE OF ERROR IN POS RPT. MINIMUMS APCH WAS MADE USING #2 NAV AND G/S. I FEEL THAT CENTER; AS SOON AS IT WAS MADE KNOWN THAT THERE WAS A NAV PROB ON THE FINAL APCH; SHOULD HAVE GIVEN A VECTOR AWAY FROM ANY OTHER ACFT IN THE APCH AIRSPACE. ASKING TO GIVE A POS RPT WHEN ON A MINIMUMS APCH WITH MALFUNCTIONING NAV EQUIP IS TIME ILL SPENT IF THERE IS A KNOWN NAV PROB. NOTE: NAV FLAG DID NOT SHOW UNTIL THE BEGINNING OF THE SECOND APCH. IT WAS LATER FOUND THAT WATER LEAKED IN ON #1 NAV ON THE TOP OF THE RADIO STACK. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: THE ACFT WAS TRANSPONDER EQUIPPED BUT THAT THEY ARE SOMETIMES LOST BY ARTCC WHEN AT LOW ALT. THE WX WAS AT MINIMUMS. THERE WAS A JET SMT TO THE SE TO FOLLOW HIM. HE WAS ON A DME ARC TRANSITION TO THE APCH. HE WANTED ARTCC TO GIVE HIM A SPECIFIC HDG. A HARD ALT WAS ISSUED BY ARTCC SOMETIME LATER.