AN EMBRAER 120 ON FINAL APCH AT 1500 FT THE PWR WAS ABRUPTLY PULLED BACK AND THE #2 ENG PROP WENT TO THE FEATHER POS.

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THIS STATEMENT CONCERNS THE OPS OF ACR FLT XYZ (DFW-HOU) ON MAY/XA/99. I WAS THE CAPT AND PIC OF THAT FLT. I WAS ASSISTED IN THE COCKPIT BY FO ZYZ WYYZ. WE FLEW SHIP NUMBER ABC; AN EMB120. THE FO WAS THE PF; THOUGH I LANDED THE PLANE. PRIOR TO LNDG; WX WAS RPTED OVER HOU THAT REQUIRED US TO HOLD FOR OVER 30 MINS. SUBSEQUENTLY; ATC RPTED THAT DUE TO THE WX; IT WOULD BE SOME TIME BEFORE WE COULD LAND. THE SHIP DID NOT HAVE A GREAT DEAL OF FUEL. AFTER CONTACTING DISPATCH; I ADVISED ATC THAT WE WERE DIVERTING TO IAH. DURING FINAL APCH; WHILE I WAS PERFORMING THE LNDG CHKLIST; THE FO AS THE PF BROUGHT THE LEVERS BACK TO ADJUST THE PWR. ABOUT THIS TIME; I FELT THE PLANE YAW TO THE R; AND NOTICED THE R SIDE OF THE PLANE SOUNDED LESS NOISY THAN BEFORE. I SAW THE PROP SPD INDICATOR READ APPROX 44%. THE FIRE WARNING SYS DID NOT INDICATE A FIRE. I TOOK THE CTLS FROM THE FO. WE PERFORMED THE ENG FAILURE/FIRE INFLT CHKLIST. WE SHUT DOWN THE R ENG. I ASKED THE FO TO CONTACT ATC AND DECLARE AN EMER. UPON LNDG; THE SHIP WAS MET BY EMER PERSONNEL. I ASKED EMER PERSONNEL TO EXAMINE THE R ENG. THEY RPTED TO ME THAT THERE WAS NOTHING ABNORMAL. I MADE AN ANNOUNCEMENT TO THE PAX. THE PLANE WAS SHUT DOWN AND TUGGED TO THE GATE. WHILE AT THE GATE; I CONDUCTED A WALKAROUND INSPECTION OF THE PLANE. THE R ENG APPEARED NORMAL. I THEN CONTACTED DISPATCH; WHICH XFERRED ME TO MAINT. I INFORMED MAINT PERSONNEL OF THE EVENTS THAT TRANSPIRED. IN AN EFFORT TO DETERMINE WHETHER THERE WAS ANY PROBS WITH THE ENG; I WAS ASKED TO PERFORM SOME MAINT CHKS ON THE GND. AFTER PERFORMING THOSE CHKS; I DID NOT OBSERVE ANYTHING ABNORMAL. SUBSEQUENTLY; I INFORMED MAINT OF THIS. THEY INSTRUCTED ME TO COMPLETE AN INFO WRITE-UP AND ENTER IT IN THE LOGBOOK. FOLLOWING THEIR INSTRUCTIONS; I DID THAT. AFTER RECEIVING A DISPATCH RELEASE; I FLEW THE SHIP TO DFW WITH THE FO AND THE FLT ATTENDANT ON BOARD. THERE WERE NO PAX. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ELECTRONIC ENG CTL FOR THE R ENG WAS DEFERRED AND INOP. THE RPTR SAID WHEN THE FO (WHO WAS FLYING THE APCH) PULLED THE THROTTLES BACK ABRUPTLY THERE WAS A LAG IN THE ENG RESPONSE; THE AUTOFEATHER LOGIC SAW THIS LAG AS A PWR INTERRUPTION AND WENT TO FEATHER. THE RPTR SAID THIS EVENT HAPPENED SEVERAL TIMES IN FLT TRAINING NOT TO THE RPTR BUT WAS KNOWN TO HAPPEN. THE RPTR SAID WHEN THE ELECTRONIC ENG CTL IS INOP; THE TECHNIQUE IS TO MAKE SMOOTH THROTTLE MOVEMENTS.