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Supervisor pointed out to approach controller that he had less than standard separation between an small transport following a widebody transport on the ILS 1 approach, controller took no action to achieve separation.
| Attributes | |
| ACN | 164357 |
| Time | |
| Date | 199012 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : iad |
| State Reference | VA |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad tower : aid artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : developmental |
| ASRS Report | 164357 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 18000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Was working the final control position as a trnee. A widebody transport X aircraft was on the approach and was told to maintain 170 KTS till the FAF. An small transport Y was following him at 5 1/2 mi and also given 170 KTS till the FAF. The widebody transport X aircraft slowed considerably once inside the FAF. The TRACON supervisor came over and pointed out to the trner that sep was decreasing. The trner told the supervisor that both aircraft were on tower frequency and to call the tower and break the small transport Y out. The supervisor did not do this. This situation (and others like it) can be reduced greatly by having supervisors take positive control of the situation, resolving the problem, then worrying about 'who done it.' this situation would not have occurred if the supervisor had done his job!!
Original NASA ASRS Text
Title: SUPVR POINTED OUT TO APCH CTLR THAT HE HAD LESS THAN STANDARD SEPARATION BETWEEN AN SMT FOLLOWING A WDB ON THE ILS 1 APCH, CTLR TOOK NO ACTION TO ACHIEVE SEPARATION.
Narrative: WAS WORKING THE FINAL CTL POS AS A TRNEE. A WDB X ACFT WAS ON THE APCH AND WAS TOLD TO MAINTAIN 170 KTS TILL THE FAF. AN SMT Y WAS FOLLOWING HIM AT 5 1/2 MI AND ALSO GIVEN 170 KTS TILL THE FAF. THE WDB X ACFT SLOWED CONSIDERABLY ONCE INSIDE THE FAF. THE TRACON SUPVR CAME OVER AND POINTED OUT TO THE TRNER THAT SEP WAS DECREASING. THE TRNER TOLD THE SUPVR THAT BOTH ACFT WERE ON TWR FREQ AND TO CALL THE TWR AND BREAK THE SMT Y OUT. THE SUPVR DID NOT DO THIS. THIS SITUATION (AND OTHERS LIKE IT) CAN BE REDUCED GREATLY BY HAVING SUPVRS TAKE POSITIVE CTL OF THE SITUATION, RESOLVING THE PROB, THEN WORRYING ABOUT 'WHO DONE IT.' THIS SITUATION WOULD NOT HAVE OCCURRED IF THE SUPVR HAD DONE HIS JOB!!
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.