AN EMB145 FO IS SURPRISED TO FIND THAT THE DAY AFTER AN ACI VIEWED THE VISUAL APCH TO RWY 22 THAT SHE WAS TURNED IN TO THE CHIEF PLT FOR A GS DEV DURING THE LAST 1000 FT OF THE APCH INTO LIT; AR.

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I WAS FLYING AS FO ON FLT FROM DFW TO LIT. ON THIS PARTICULAR FLT; WE HAD AN FAA INSPECTOR IN OUR JUMP SEAT. WE WERE CLRED FOR A VISUAL APCH TO RWY 22L. IT WAS DAYLIGHT AND THERE WAS AN OVCST THAT STARTED AT ABOUT 2500 FT MSL. THE VISIBILITY WAS RPTED AT 7 MI. WE WERE CLRED FOR THE VISUAL ON DOWNWIND. AS I TURNED DOWNWIND TO BASE; I WAS SLIGHTLY HIGH AND WAS CORRECTING. THE FLT PARAMETERS WERE WELL WITHIN THE COMPANY'S ESTABLISHED APCH CRITERIA. AS WE TURNED ONTO FINAL; WE WERE FULLY CONFIGURED AND THE PAPI INDICATED 3 RED LIGHTS AND 1 WHITE LIGHT. THE CAPT AND I WERE BOTH COMFORTABLE WITH THE APCH. I LOOKED INSIDE THE ACFT FOR A MOMENT TO CONFIRM THE VISUAL APCH WITH THE ILS THAT WE HAD SET FOR A BACKUP TO THE VISUAL. WE WERE SLIGHTLY BELOW THE GS INDICATOR; BUT THIS IS NORMAL ON A VISUAL. WHEN I LOOKED BACK UP; THE PAPI INDICATED 4 RED LIGHTS. I ADDED SOME PWR AND THEN THE GPWS ANNOUNCED 'GS.' I IMMEDIATELY ADDED MORE PWR AND ANNOUNCED THAT I WAS CORRECTING. (THIS IS THE WAY THE COMPANY HAD TRAINED US TO ACKNOWLEDGE ANY GPWS ANNOUNCEMENTS.) AT NO TIME WAS THE ACFT DANGEROUSLY LOW. AS SOON AS PWR WAS ADDED; WE ONCE AGAIN SAW 2 RED AND 2 WHITE LIGHTS ON THE PAPI. THE SAFETY OF THE FLT WAS AT NO TIME IN JEOPARDY. THE LNDG WAS ACCEPTABLE AND IN THE TOUCHDOWN ZONE. WHEN WE ARRIVED AT THE GATE; THE INSPECTOR SAID NOTHING OF THE MOMENTARY DEV BELOW THE GS AND LEFT THE COCKPIT. I WAS SLIGHTLY CONCERNED ABOUT THE GPWS GOING OFF; ESPECIALLY WITH THE FAA ON BOARD. THE CAPT ASSURED ME THAT THE APCH WAS SAFE; I DID EVERYTHING I SHOULD HAVE DONE; AND HE WAS NOT CONCERNED ABOUT IT. I DIDN'T THINK MUCH MORE ABOUT THIS FLT UNTIL THE NEXT DAY WHEN I WAS NOTIFIED BY OUR PLT UNION THAT THE FAA HAD WRITTEN A RPT TO THE CHIEF PLT ABOUT THIS DEV.