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Spacing lost between large transport on landing roll and widebody transport on final. Widebody transport made go around.
| Attributes | |
| ACN | 103151 |
| Time | |
| Date | 198901 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 100 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach landing : go around |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : commercial pilot : instrument pilot : flight engineer |
| Experience | controller radar : 12 flight time last 90 days : 100 flight time total : 3300 |
| ASRS Report | 103151 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Inter Facility Coordination Failure |
Narrative:
Approach sequenced a company large transport ahead of us on the ILS with what appeared to be 1 1/2-2 1/2 mi latitude spacing west/O issuing information concerning that aircraft. We were slowed to 170 KTS well outside of the jocky NDB. On initial contact with the local controller we were told to 'reduce to your minimum safe approach speed.' we asked for spacing information and were told we were 60 KTS faster than the traffic and that he was approximately 3 mi final. We were not told how far behind the traffic we were. We reduced to approximately 138 KTS and began shallow s-turns to increase spacing, and so advised tower. We increased spacing and were below 200' AGL when the tower told preceding aircraft to expedite clearing runway. Preceding aircraft advised tower that his antiskid was inoperative and shortly after that tower gave us a go around. We were at approximately 100' AGL when go around issued. It appeared that approach control gave the local controller a deal and there was no way we had handbook sep (FAA 7110.65).
Original NASA ASRS Text
Title: SPACING LOST BETWEEN LGT ON LNDG ROLL AND WDB ON FINAL. WDB MADE GO AROUND.
Narrative: APCH SEQUENCED A COMPANY LGT AHEAD OF US ON THE ILS WITH WHAT APPEARED TO BE 1 1/2-2 1/2 MI LAT SPACING W/O ISSUING INFO CONCERNING THAT ACFT. WE WERE SLOWED TO 170 KTS WELL OUTSIDE OF THE JOCKY NDB. ON INITIAL CONTACT WITH THE LCL CTLR WE WERE TOLD TO 'REDUCE TO YOUR MINIMUM SAFE APCH SPD.' WE ASKED FOR SPACING INFO AND WERE TOLD WE WERE 60 KTS FASTER THAN THE TFC AND THAT HE WAS APPROX 3 MI FINAL. WE WERE NOT TOLD HOW FAR BEHIND THE TFC WE WERE. WE REDUCED TO APPROX 138 KTS AND BEGAN SHALLOW S-TURNS TO INCREASE SPACING, AND SO ADVISED TWR. WE INCREASED SPACING AND WERE BELOW 200' AGL WHEN THE TWR TOLD PRECEDING ACFT TO EXPEDITE CLRING RWY. PRECEDING ACFT ADVISED TWR THAT HIS ANTISKID WAS INOP AND SHORTLY AFTER THAT TWR GAVE US A GAR. WE WERE AT APPROX 100' AGL WHEN GAR ISSUED. IT APPEARED THAT APCH CTL GAVE THE LCL CTLR A DEAL AND THERE WAS NO WAY WE HAD HANDBOOK SEP (FAA 7110.65).
Data retrieved from NASA's ASRS site as of August 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.