 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Aircraft on converging course with another aircraft was instructed to maintain visual separation before losing radar separation.
| Attributes | |
| ACN | 111883 |
| Time | |
| Date | 198905 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : pit |
| State Reference | PA |
| Altitude | msl bound lower : 3500 msl bound upper : 35003 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : pit |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 111883 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Controller missed hearback of incorrect heading by commuter. Controller recognized conflict by observing target track on incorrect heading. Commuter was converging with air carrier on final at outer marker. Controller advised commuter of incorrect heading and issued air carrier traffic on final. Commuter saw traffic and was instructed to maintain visual separation. Commuter advised controller he read back the heading which caused the confliction but controller did not hear the readback. Tape was not pulled. Visual separation was applied before standard separation was lost.
Original NASA ASRS Text
Title: ACFT ON CONVERGING COURSE WITH ANOTHER ACFT WAS INSTRUCTED TO MAINTAIN VISUAL SEPARATION BEFORE LOSING RADAR SEPARATION.
Narrative: CTLR MISSED HEARBACK OF INCORRECT HDG BY COMMUTER. CTLR RECOGNIZED CONFLICT BY OBSERVING TARGET TRACK ON INCORRECT HDG. COMMUTER WAS CONVERGING WITH ACR ON FINAL AT OUTER MARKER. CTLR ADVISED COMMUTER OF INCORRECT HDG AND ISSUED ACR TFC ON FINAL. COMMUTER SAW TFC AND WAS INSTRUCTED TO MAINTAIN VISUAL SEPARATION. COMMUTER ADVISED CTLR HE READ BACK THE HDG WHICH CAUSED THE CONFLICTION BUT CTLR DID NOT HEAR THE READBACK. TAPE WAS NOT PULLED. VISUAL SEPARATION WAS APPLIED BEFORE STANDARD SEPARATION WAS LOST.
Data retrieved from NASA's ASRS site as of August 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.