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Multiple runway operation parallel runways. Large transport passed small transport on final approach visual approachs in use. Wake turbulence separation.
| Attributes | |
| ACN | 259589 |
| Time | |
| Date | 199312 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : den |
| State Reference | CO |
| Altitude | msl bound lower : 7400 msl bound upper : 7400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : den |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | descent : approach |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller radar : 10 |
| ASRS Report | 259589 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : investigated |
| Miss Distance | vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
Had an large transport overtaking an small transport on final to runway 26L&right. 7110.65 paragraph 7-133 states in bold print 'do not let a large overtake a small.' I informed facility management of the possible loss of separation unless something is done. The tower called the TRACON. The TRACON refused to pull either aircraft out. Separation was lost when the large overtook the small. The tower supervisor turned the incident over to the TRACON area manager.
Original NASA ASRS Text
Title: MULTIPLE RWY OP PARALLEL RWYS. LGT PASSED SMT ON FINAL APCH VISUAL APCHS IN USE. WAKE TURB SEPARATION.
Narrative: HAD AN LGT OVERTAKING AN SMT ON FINAL TO RWY 26L&R. 7110.65 PARAGRAPH 7-133 STATES IN BOLD PRINT 'DO NOT LET A LARGE OVERTAKE A SMALL.' I INFORMED FACILITY MGMNT OF THE POSSIBLE LOSS OF SEPARATION UNLESS SOMETHING IS DONE. THE TWR CALLED THE TRACON. THE TRACON REFUSED TO PULL EITHER ACFT OUT. SEPARATION WAS LOST WHEN THE LARGE OVERTOOK THE SMALL. THE TWR SUPVR TURNED THE INCIDENT OVER TO THE TRACON AREA MGR.
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.