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An air carrier mdt had a TCASII, alert to climb while at 4000 ft, in the N90 TCA, at night, in instrument conditions. Other aircraft not under ATC control.
| Attributes | |
| ACN | 213478 |
| Time | |
| Date | 199206 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : jfk |
| State Reference | NY |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Transport, High Wing, 2 Turboprop Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5900 flight time type : 1000 |
| ASRS Report | 213478 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : nmac inflight encounter : vfr in imc |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Traffic popped up on TCASII out of nowhere. Received a TA and subsequently an RA commanding climb at 1000-1500 FPM. As we initiated the climb, the controller issued an advisory on the traffic. Traffic then disappeared. Later the controller advised he had not seen the traffic, it was as if the transponder had just been turned on. He tracked it for a few mi and then the transponder was turned off again. This could easily have ended in a catastrophe. Luckily, most pilots follow rules. This guy did not, as he was in a TCA at an IFR altitude during IMC conditions!
Original NASA ASRS Text
Title: AN ACR MDT HAD A TCASII, ALERT TO CLB WHILE AT 4000 FT, IN THE N90 TCA, AT NIGHT, IN INST CONDITIONS. OTHER ACFT NOT UNDER ATC CTL.
Narrative: TFC POPPED UP ON TCASII OUT OF NOWHERE. RECEIVED A TA AND SUBSEQUENTLY AN RA COMMANDING CLB AT 1000-1500 FPM. AS WE INITIATED THE CLB, THE CTLR ISSUED AN ADVISORY ON THE TFC. TFC THEN DISAPPEARED. LATER THE CTLR ADVISED HE HAD NOT SEEN THE TFC, IT WAS AS IF THE TRANSPONDER HAD JUST BEEN TURNED ON. HE TRACKED IT FOR A FEW MI AND THEN THE TRANSPONDER WAS TURNED OFF AGAIN. THIS COULD EASILY HAVE ENDED IN A CATASTROPHE. LUCKILY, MOST PLTS FOLLOW RULES. THIS GUY DID NOT, AS HE WAS IN A TCA AT AN IFR ALT DURING IMC CONDITIONS!
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.