Narrative:

First officer was flying the ILS approach to runway 21R dtw metropolitan airport. On intercept to final, the autoplt disconnected as the aircraft started to intercept the localizer. As the first officer transitioned to hand flying, the aircraft overshot the localizer course. The first officer attempted to re-intercept localizer while attempting to re- engage autoplt. At that point, the GS became active. As the first officer attempted to stabilize the approach inside the OM, the GPWS warning sounded to pull up. At that point, approximately 800 ft AGL (1200-1500 FPM sink), I directed a missed approach/go around. First officer flew an uneventful go around and then vectors for an uneventful approach and landing. First officer only had 2 months experience on the line (commuter, turboprop backgnd). He became distraction by autoplt problems and failed to successfully transition to hand flying. As captain, I monitored the safety of situation while allowing first officer the opportunity to re- establish aircraft when sink became greater than 1000 FPM below 1000 ft AGL. I directed go around simultaneously as GPWS sounded.

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Original NASA ASRS Text

Title: CAPT OF AN MLG ORDERED THE FO FLYING TO MAKE A MISSED APCH AND GAR DUE OVERSHOOTING THE LOC WHEN TURNING TO FINAL AND THE HIGH RATE OF DSCNT TO CAPTURE THE GS CAUSING A GPWS WARNING. THE FO MADE AN ACCEPTABLE MISSED APCH AND SUBSEQUENTLY LANDED UNEVENTFULLY.

Narrative: FO WAS FLYING THE ILS APCH TO RWY 21R DTW METRO ARPT. ON INTERCEPT TO FINAL, THE AUTOPLT DISCONNECTED AS THE ACFT STARTED TO INTERCEPT THE LOC. AS THE FO TRANSITIONED TO HAND FLYING, THE ACFT OVERSHOT THE LOC COURSE. THE FO ATTEMPTED TO RE-INTERCEPT LOC WHILE ATTEMPTING TO RE- ENGAGE AUTOPLT. AT THAT POINT, THE GS BECAME ACTIVE. AS THE FO ATTEMPTED TO STABILIZE THE APCH INSIDE THE OM, THE GPWS WARNING SOUNDED TO PULL UP. AT THAT POINT, APPROX 800 FT AGL (1200-1500 FPM SINK), I DIRECTED A MISSED APCH/GAR. FO FLEW AN UNEVENTFUL GAR AND THEN VECTORS FOR AN UNEVENTFUL APCH AND LNDG. FO ONLY HAD 2 MONTHS EXPERIENCE ON THE LINE (COMMUTER, TURBOPROP BACKGND). HE BECAME DISTR BY AUTOPLT PROBS AND FAILED TO SUCCESSFULLY TRANSITION TO HAND FLYING. AS CAPT, I MONITORED THE SAFETY OF SIT WHILE ALLOWING FO THE OPPORTUNITY TO RE- ESTABLISH ACFT WHEN SINK BECAME GREATER THAN 1000 FPM BELOW 1000 FT AGL. I DIRECTED GAR SIMULTANEOUSLY AS GPWS SOUNDED.

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.