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B727 maintaining FL280 is advised by controller, learjet descending to FL290. Traffic not sighted when TCASII alert went to RA for descent. Descended to FL274 and advised controller. Conflict resolved and learjet never in sight.
| Attributes | |
| ACN | 348483 |
| Time | |
| Date | 199609 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : vuz |
| State Reference | AL |
| Altitude | msl bound lower : 27400 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Gates Learjet Corp Undifferentiated or Other Model |
| Operating Under FAR Part | Part 135 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5100 flight time type : 3340 |
| ASRS Report | 348483 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 15000 flight time type : 10000 |
| ASRS Report | 348333 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
We were FL280, ZTL called traffic at 12 O'clock (learjet) descending to FL290. No visual on traffic. Few mins later we got a TCASII RA to 'descend.' no visual -- we deviated to 27400 ft. Conflict resolved. Closest point of approach with learjet was 500 ft on TCASII. We never visually saw him. Location of event: 20 NM south vuz.
Original NASA ASRS Text
Title: B727 MAINTAINING FL280 IS ADVISED BY CTLR, LEARJET DSNDING TO FL290. TFC NOT SIGHTED WHEN TCASII ALERT WENT TO RA FOR DSCNT. DSNDED TO FL274 AND ADVISED CTLR. CONFLICT RESOLVED AND LEARJET NEVER IN SIGHT.
Narrative: WE WERE FL280, ZTL CALLED TFC AT 12 O'CLOCK (LEARJET) DSNDING TO FL290. NO VISUAL ON TFC. FEW MINS LATER WE GOT A TCASII RA TO 'DSND.' NO VISUAL -- WE DEVIATED TO 27400 FT. CONFLICT RESOLVED. CLOSEST POINT OF APCH WITH LEARJET WAS 500 FT ON TCASII. WE NEVER VISUALLY SAW HIM. LOCATION OF EVENT: 20 NM S VUZ.
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.