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Lex tower controller experienced conflict as TRACON issued visual clearance to LR60 on downwind that conflicted with VFR C172 on base.
| Attributes | |
| ACN | 675938 |
| Time | |
| Date | 200510 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lex.airport |
| State Reference | KY |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lex.tracon |
| Operator | general aviation : personal |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : lex.tower |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| ASRS Report | 6759387 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert flight crew : took evasive action |
| Miss Distance | horizontal : 9000 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure |
Narrative:
Approach cleared aircraft #1 for a visual approach on a left downwind; then let a C172 (aircraft #2) get too close on a left base. Aircraft #1 had to climb and turn to avoid aircraft #2. When I coordination with approach; he said he thought the lear would 'crank it in there.'
Original NASA ASRS Text
Title: LEX TWR CTLR EXPERIENCED CONFLICT AS TRACON ISSUED VISUAL CLRNC TO LR60 ON DOWNWIND THAT CONFLICTED WITH VFR C172 ON BASE.
Narrative: APCH CLRED ACFT #1 FOR A VISUAL APCH ON A L DOWNWIND; THEN LET A C172 (ACFT #2) GET TOO CLOSE ON A L BASE. ACFT #1 HAD TO CLB AND TURN TO AVOID ACFT #2. WHEN I COORD WITH APCH; HE SAID HE THOUGHT THE LEAR WOULD 'CRANK IT IN THERE.'
Data retrieved from NASA's ASRS site as of January 2009 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.