Narrative:

Due to a loss of radar vectoring, all aircraft on frequency became concerned with position. When I encountered 'VFR' conditions well past this airport (I was now in mexico), I declared an emergency and vacated 3000 ft to 2000 ft MSL (WX was less than 2500 ft and 10 SM visibility) and proceeded to hrl for a normal landing.

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Original NASA ASRS Text

Title: DC9-15 CREW ENTERED MEXICAN AIRSPACE AFTER HRL APCH CTLR DID NOT REVERT TO NON RADAR PROCS AFTER ATC RADAR FAILURE.

Narrative: DUE TO A LOSS OF RADAR VECTORING, ALL ACFT ON FREQ BECAME CONCERNED WITH POS. WHEN I ENCOUNTERED 'VFR' CONDITIONS WELL PAST THIS ARPT (I WAS NOW IN MEXICO), I DECLARED AN EMER AND VACATED 3000 FT TO 2000 FT MSL (WX WAS LESS THAN 2500 FT AND 10 SM VISIBILITY) AND PROCEEDED TO HRL FOR A NORMAL LNDG.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.