Narrative:

Approaching hanscom from northeast ATIS 'runway 11 visibility approach...' first contact with hanscom tower, 'report left downwind for 29'r.' knew that was incorrect per ATIS. Waited 1 min and called tower again: 'report left downwind for 11.' reported left downwind for 11: 'roger, you are #3 to land.' tower was running both left and right pattern traffic. Tower: 'XXX I #2 behind YYY on short final; cleared to land.' turned base and reported to tower, 'tower, you have 2 aircraft on base leg' (same altitude and headed at each other). 'Roger, XXX cleared to land.' turned onto final and so did the other aircraft. 'Tower, you have 2 planes on final! I have a plane at my 3 O'clock!' 'roger XXX, continue.' 'tower you have 2 planes on final; I have a plane at my 3 O'clock and am going to do a 360 to the left.' 'no, don't do a 360, there is traffic behind you. (Pause). Go around, and make right traffic!' 1/2-way through the go around procedure, tower: 'XXX, do not make right traffic, make left traffic.' controllers changed from female to male at this point and we landed west/O further incident. At no time during this entire sequence did we hear any communication between the tower and the other aircraft, which landed under us after we had been the aircraft cleared to land!! Controllers also indicated they were having difficulty seeing aircraft in the pattern due to the haze.

Related reports:

Google
 

Original NASA ASRS Text

Title: 2 ACFT ON FINAL AT SAME TIME IN CLOSE PROX. SMA GIVEN GO AROUND BY WHAT APPEARED TO BE THE INSTRUCTOR CTLR.

Narrative: APCHING HANSCOM FROM NE ATIS 'RWY 11 VIS APCH...' FIRST CONTACT WITH HANSCOM TWR, 'RPT LEFT DOWNWIND FOR 29'R.' KNEW THAT WAS INCORRECT PER ATIS. WAITED 1 MIN AND CALLED TWR AGAIN: 'RPT LEFT DOWNWIND FOR 11.' RPTED LEFT DOWNWIND FOR 11: 'ROGER, YOU ARE #3 TO LAND.' TWR WAS RUNNING BOTH LEFT AND RIGHT PATTERN TFC. TWR: 'XXX I #2 BEHIND YYY ON SHORT FINAL; CLRED TO LAND.' TURNED BASE AND RPTED TO TWR, 'TWR, YOU HAVE 2 ACFT ON BASE LEG' (SAME ALT AND HEADED AT EACH OTHER). 'ROGER, XXX CLRED TO LAND.' TURNED ONTO FINAL AND SO DID THE OTHER ACFT. 'TWR, YOU HAVE 2 PLANES ON FINAL! I HAVE A PLANE AT MY 3 O'CLOCK!' 'ROGER XXX, CONTINUE.' 'TWR YOU HAVE 2 PLANES ON FINAL; I HAVE A PLANE AT MY 3 O'CLOCK AND AM GOING TO DO A 360 TO THE LEFT.' 'NO, DON'T DO A 360, THERE IS TFC BEHIND YOU. (PAUSE). GO AROUND, AND MAKE RIGHT TFC!' 1/2-WAY THROUGH THE GAR PROC, TWR: 'XXX, DO NOT MAKE RIGHT TFC, MAKE LEFT TFC.' CTLRS CHANGED FROM FEMALE TO MALE AT THIS POINT AND WE LANDED W/O FURTHER INCIDENT. AT NO TIME DURING THIS ENTIRE SEQUENCE DID WE HEAR ANY COM BTWN THE TWR AND THE OTHER ACFT, WHICH LANDED UNDER US AFTER WE HAD BEEN THE ACFT CLRED TO LAND!! CTLRS ALSO INDICATED THEY WERE HAVING DIFFICULTY SEEING ACFT IN THE PATTERN DUE TO THE HAZE.

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.