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C90 controller described a go-around event claiming a previous inbound who was sent around because of spacing issues slowed to below assigned speed to the outer marker and caused a subsequent go around.
| Attributes | |
| ACN | 1071190 |
| Time | |
| Date | 201303 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ORD.Airport |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | A330 |
| 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 | Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
B737-800 was being vectored to the ILS runway 10 approach at O'hare; and had to be sent around due to inadequate spacing on the final. It should be noted that the weather was less then 1 mile visibility and snow. B737-800; was then worked by departure; and brought back to the down wind for another approach. It was clear the pilot was frustrated about being sent around due to spacing. On their subsequent approach; B737-800 was observed at 120 knots ground speed 1 mile outside of the FAF. Normal procedure would have the aircraft hold the speed to the marker; and all other aircraft had been showing between 180 and 160 knots over the ground until inside the marker. In this case; B737-800 clearly opted to slow early. B737-800 ended over 4.2 miles behind the traffic they were following; where only 3 was needed. This caused A330 to collapse on B737-800. It appeared the monitor slowed A330 to their final; and ended up with just barely 3 miles at touch. But B737-800 then didn't clear the runway in time. This caused A330 to be sent around. A330 then had to fly to roughly an 18 mile final; and back at 180 knots indicated. All because B737-800 opted to choose there own speed. Deviate B737-800 for not complying; or advising they were unwilling/unable to comply with the speed restriction.
Original NASA ASRS Text
Title: C90 Controller described a go-around event claiming a previous inbound who was sent around because of spacing issues slowed to below assigned speed to the Outer Marker and caused a subsequent go around.
Narrative: B737-800 was being vectored to the ILS Runway 10 Approach at O'Hare; and had to be sent around due to inadequate spacing on the final. It should be noted that the weather was less then 1 mile visibility and snow. B737-800; was then worked by Departure; and brought back to the down wind for another approach. It was clear the pilot was frustrated about being sent around due to spacing. On their subsequent approach; B737-800 was observed at 120 knots ground speed 1 mile outside of the FAF. Normal procedure would have the aircraft hold the speed to the marker; and all other aircraft had been showing between 180 and 160 knots over the ground until inside the marker. In this case; B737-800 clearly opted to slow early. B737-800 ended over 4.2 miles behind the traffic they were following; where only 3 was needed. This caused A330 to collapse on B737-800. It appeared the monitor slowed A330 to their final; and ended up with just barely 3 miles at touch. But B737-800 then didn't clear the runway in time. This caused A330 to be sent around. A330 then had to fly to roughly an 18 mile final; and back at 180 knots indicated. All because B737-800 opted to choose there own speed. Deviate B737-800 for not complying; or advising they were unwilling/unable to comply with the speed restriction.
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.