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A D328 captain (PNF) reports receiving a TCASII RA that took the aircraft in the direction of the target. The reporter states, 'this was a serious equipment malfunction that almost caused a midair collision.'
| Attributes | |
| ACN | 351374 |
| Time | |
| Date | 199610 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : cha |
| State Reference | TN |
| Altitude | msl bound lower : 23000 msl bound upper : 24200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl tracon : cvg |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : ztl |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 240 flight time total : 8000 flight time type : 1000 |
| ASRS Report | 351374 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 200 flight time total : 2000 flight time type : 400 |
| ASRS Report | 351512 |
| Events | |
| Anomaly | aircraft equipment problem : critical conflict : nmac |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 3600 vertical : 200 |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
While at cruise at FL230 TCASII announced 'traffic.' while looking for traffic TCASII gave an RA of 'climb, climb now.' crew responded by climbing. The TCASII continued the RA of climb through FL240 up to FL244 as we continued to climb. We finally saw traffic that was level at FL240, when we were at FL242. This was a serious equipment malfunction that almost caused a midair collision. After resolution passed we descended back to FL23O. TCASII performed normally the rest of the flight. Callback conversation with reporter revealed the following information: reporter was flying a D328.
Original NASA ASRS Text
Title: A D328 CAPT (PNF) RPTS RECEIVING A TCASII RA THAT TOOK THE ACFT IN THE DIRECTION OF THE TARGET. THE RPTR STATES, 'THIS WAS A SERIOUS EQUIP MALFUNCTION THAT ALMOST CAUSED A MIDAIR COLLISION.'
Narrative: WHILE AT CRUISE AT FL230 TCASII ANNOUNCED 'TFC.' WHILE LOOKING FOR TFC TCASII GAVE AN RA OF 'CLB, CLB NOW.' CREW RESPONDED BY CLBING. THE TCASII CONTINUED THE RA OF CLB THROUGH FL240 UP TO FL244 AS WE CONTINUED TO CLB. WE FINALLY SAW TFC THAT WAS LEVEL AT FL240, WHEN WE WERE AT FL242. THIS WAS A SERIOUS EQUIP MALFUNCTION THAT ALMOST CAUSED A MIDAIR COLLISION. AFTER RESOLUTION PASSED WE DSNDED BACK TO FL23O. TCASII PERFORMED NORMALLY THE REST OF THE FLT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR WAS FLYING A D328.
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.