2011-06 · NASA ASRS report 955045
An NMAC between a CE560XL and a homebuilt aircraft occurred on final approach in mixed IMC.
The Tower alerted us to traffic at our 10 o'clock position that was to follow us to the runway. The traffic popped up on TCAS close; maybe a mile or less; and we got a TA on the TCAS immediately. Within thirty seconds we got an RA to descend. As I was trying to acquire the traffic on the left side the pilot flying complied with the RA to descend. We were at approximately 1;800 FT MSL when the RA occurred and descended to approximately 1;400 MSL. The traffic went over the top of us approximately 200 FT vertical and approximately 300 to 400 FT lateral.The traffic was supposed to follow us and he did not call us in sight to the Tower until he passed over us and the RA was over. I reported to the Tower Controller that it was a near miss and that traffic was too close to us. As we were descending and complying with the RA I saw the traffic out the right side above us as he went over us. I think the traffic had turned his base and then final right over us never having us in sight. I think the Tower Controller was in training. If so; the trainer should have stepped in. We were still IFR and on an approach. It was the Tower's duty to keep the final approach corridor clear for us. There was confusion between the Tower and the traffic as to our position and what the traffic was supposed to do. The Tower should have had the traffic extend the downwind or at least call the traffic's base turn after we cleared.
The traffic went directly over us at about 200 to 400 FT. I remember hearing the Tower tell him that we were on the approach and to follow us and he would be number two to the field. He did not answer until he was passing right over us.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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