Narrative:

We were on the final for runway xr performing the ILS runway xr prm; in actual prm conditions; i.e.; low visibility; fog. While on the final; I noticed an aircraft quickly approaching our position in an apparent overshoot of the final on runway Y. Just as I was asking my first officer if he had visual contact of that aircraft; the final approach controller asked us to break off our approach and climb and maintain 5;000 ft. I executed the standard go-around procedures and as we were climbing; he asked us to continue to track inbound on the localizer. As we began to comply; the monitor came over the radio and asked us to get back; descend to 4;000 ft. We began to descend to 4;000 ft again when the monitor asked us if we could try and get back down and perhaps shoot the approach from where we were. By this point we had full deflection of the GS; so we declined and said we would prefer to go back around and get stabilized again as we were previously. He said that would be no problem. While this was transpiring; we had drifted off the localizer because we were in heading mode and we had a 26 KT crosswind. The monitor asked us to rejoin the localizer. We complied. We then were vectored back around and shot the ILS 10 approach successfully. The infringing aircraft appeared to be a regional jet.

Related reports:

Google
 

Original NASA ASRS Text

Title: Flight crew of unspecified air carrier aircraft on an ILS PRM approach are instructed to go around by the Monitor Controller due to encroachment by the partner aircraft.

Narrative: We were on the final for Runway XR performing the ILS Runway XR PRM; in actual PRM conditions; i.e.; low visibility; fog. While on the final; I noticed an aircraft quickly approaching our position in an apparent overshoot of the final on Runway Y. Just as I was asking my First Officer if he had visual contact of that aircraft; the Final Approach Controller asked us to break off our approach and climb and maintain 5;000 FT. I executed the standard go-around procedures and as we were climbing; he asked us to continue to track inbound on the LOC. As we began to comply; the Monitor came over the radio and asked us to get back; descend to 4;000 FT. We began to descend to 4;000 FT again when the Monitor asked us if we could try and get back down and perhaps shoot the approach from where we were. By this point we had full deflection of the GS; so we declined and said we would prefer to go back around and get stabilized again as we were previously. He said that would be no problem. While this was transpiring; we had drifted off the LOC because we were in heading mode and we had a 26 KT crosswind. The Monitor asked us to rejoin the LOC. We complied. We then were vectored back around and shot the ILS 10 approach successfully. The infringing aircraft appeared to be a Regional Jet.

Data retrieved from NASA's ASRS site as of May 2009 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.