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FAA evaluator questions C90 controller's application of separation between a climbing DA20 and MD80, which is later determined to be an operational error.
| Attributes | |
| ACN | 513801 |
| Time | |
| Date | 200106 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : c90.tracon airport : ord.airport |
| State Reference | IL |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : c90.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 20FJF/20C/20D/20E/20F |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : c90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller radar : 18 controller time certified in position1 : 2 |
| ASRS Report | 513801 |
| Person 2 | |
| Affiliation | government : faa |
| Function | other personnel other |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other other : atc evaluator |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 16200 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
| Situations | |
| ATC Facility | procedure or policy : c90.tracon |
Narrative:
I vectored aircraft a to a departure heading, clear of other traffic and climbed the aircraft to 4000 ft. Aircraft B crossed behind, diverging from aircraft a, but an FAA evaluator who was observing, claimed loss of separation. The observer has a different interpretation of the applicable rule in this instance and the issue is being investigated.
Original NASA ASRS Text
Title: FAA EVALUATOR QUESTIONS C90 CTLR'S APPLICATION OF SEPARATION BTWN A CLBING DA20 AND MD80, WHICH IS LATER DETERMINED TO BE AN OPERROR.
Narrative: I VECTORED ACFT A TO A DEP HEADING, CLR OF OTHER TFC AND CLBED THE ACFT TO 4000 FT. ACFT B CROSSED BEHIND, DIVERGING FROM ACFT A, BUT AN FAA EVALUATOR WHO WAS OBSERVING, CLAIMED LOSS OF SEPARATION. THE OBSERVER HAS A DIFFERENT INTERP OF THE APPLICABLE RULE IN THIS INSTANCE AND THE ISSUE IS BEING INVESTIGATED.
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.