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Aircraft equipment problem TCASII. Air carrier X received false TCASII RA with air carrier Y. Standard vertical separation between aircraft.
| Attributes | |
| ACN | 238092 |
| Time | |
| Date | 199304 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl |
| State Reference | GA |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : atl |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 238092 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | other |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 18000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Air carrier X was eastbound at 11000 ft. Air carrier Y was sbound at 10000 ft. Air carrier X was 8 NM southwest of atl VOR. Air carrier Y was 11 plus NM southwest of atl VOR. Air carrier X advised he received a climb 'RA.' it appears we have a very serious problem with TCASII software/hardware.
Original NASA ASRS Text
Title: ACFT EQUIP PROB TCASII. ACR X RECEIVED FALSE TCASII RA WITH ACR Y. STANDARD VERT SEPARATION BTWN ACFT.
Narrative: ACR X WAS EBOUND AT 11000 FT. ACR Y WAS SBOUND AT 10000 FT. ACR X WAS 8 NM SW OF ATL VOR. ACR Y WAS 11 PLUS NM SW OF ATL VOR. ACR X ADVISED HE RECEIVED A CLB 'RA.' IT APPEARS WE HAVE A VERY SERIOUS PROB WITH TCASII SOFTWARE/HARDWARE.
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.