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Loss of separation between a learjet climbing out and a B737 on arrival descent, due to approach controller error.
| Attributes | |
| ACN | 490418 |
| Time | |
| Date | 200011 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pie.vortac |
| State Reference | FL |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 25 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude climbout : vacating altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : tpa.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude descent : vacating altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 20 |
| ASRS Report | 490418 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : separated traffic |
| Miss Distance | horizontal : 17000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier descended to 7000 ft on arrival to tpa. Learjet climbed to 6000 ft on initial contact. However, 7000 ft actually given to learjet. Conflict recognized and learjet turned immediately west prior to loss of separation. However, during the turn separation descended below 3 mi. Safety was never compromised.
Original NASA ASRS Text
Title: LOSS OF SEPARATION BTWN A LEARJET CLBING OUT AND A B737 ON ARR DSCNT, DUE TO APCH CTLR ERROR.
Narrative: ACR DSNDED TO 7000 FT ON ARR TO TPA. LEARJET CLBED TO 6000 FT ON INITIAL CONTACT. HOWEVER, 7000 FT ACTUALLY GIVEN TO LEARJET. CONFLICT RECOGNIZED AND LEARJET TURNED IMMEDIATELY W PRIOR TO LOSS OF SEPARATION. HOWEVER, DURING THE TURN SEPARATION DSNDED BELOW 3 MI. SAFETY WAS NEVER COMPROMISED.
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.