D01 controller described a go around event during simultaneous approach procedures when one controll...

Narrative:

While working the monitor 2 controller position I was told that the FR2 controller was going to be using 'shuffle procedures' on the final. The plan was to shuffle a single 35R arrival aircraft to an ILS approach between two 35L aircraft both on ILS approaches to 35L. I observed a B737 joining the localizer for the approach with the appropriate 'shuffle procedures' separation between the 35L and 35R final. As the B737 was at or inside the FAF for 35R the flm walked up and ordered me to 'pull out' the B737. I immediately canceled the B737's approach and coordinated turning to the east for re sequencing. I also climbed the B737 to 7;000 ft. I kept the B737 on the local frequency; turned the B737 to a southbound heading and climbed to 9;000 ft. After I observed the B737 turning southbound below the downwind traffic; I changed the B737's to the FR2 frequency. Staying within the 'normal' simos operation procedures would have fixed this problem. The workload and weather made the situation more stressful. The aggressiveness of the final controller to save time; fuel; and to be expeditious with the traffic load also were contributing factors to the go around.

Original NASA ASRS Text

Title: D01 Controller described a go around event during simultaneous approach procedures when one controller elected to alter the simultaneous procedures leading to the go around.

Narrative: While working the Monitor 2 Controller position I was told that the FR2 Controller was going to be using 'shuffle procedures' on the final. The plan was to shuffle a single 35R arrival aircraft to an ILS approach between two 35L aircraft both on ILS approaches to 35L. I observed a B737 joining the localizer for the approach with the appropriate 'shuffle procedures' separation between the 35L and 35R final. As the B737 was at or inside the FAF for 35R the FLM walked up and ordered me to 'pull out' the B737. I immediately canceled the B737's approach and coordinated turning to the east for re sequencing. I also climbed the B737 to 7;000 FT. I kept the B737 on the Local frequency; turned the B737 to a southbound heading and climbed to 9;000 FT. After I observed the B737 turning southbound below the downwind traffic; I changed the B737's to the FR2 frequency. Staying within the 'normal' SIMOS operation procedures would have fixed this problem. The workload and weather made the situation more stressful. The aggressiveness of the Final Controller to save time; fuel; and to be expeditious with the traffic load also were contributing factors to the go around.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1045119
Time
Date	201210
Local Time Of Day	1201-1800
Place
Locale Reference	D01.TRACON
State Reference	CO
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Approach Departure
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

D01 controller described a go around event during simultaneous approach procedures when one controller elected to alter the simultaneous procedures leading to the go around.