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TCASII RA caused near midair collision less than standard separation between air carrier X and Y. Pilot deviation.
| Attributes | |
| ACN | 243989 |
| Time | |
| Date | 199306 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : jfk |
| State Reference | NY |
| Altitude | msl bound lower : 20000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| 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 | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 9 controller radar : 8 controller supervisory : 1 |
| ASRS Report | 243989 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : nmac non adherence : clearance non adherence : required legal separation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 0 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X sebound climbing to FL190. Air carrier Y swbound descending to FL200 crossing paths. Air carrier X advised responding to a TCASII RA to climb. This resolution caused an near midair collision between 2 acrs. Air carrier Y, although TCASII equipped, did not respond to RA. Pilot (air carrier Y) cited air carrier X in sight as reason for not responding to descent RA. In the 12 seconds that this event occurred, air carrier X climbed 2000 ft. TCASII has taken a controled situation and turned it into a near midair collision making positive control airspace a thing of the past since no one now has control and each aircraft is free to decide its own path.
Original NASA ASRS Text
Title: TCASII RA CAUSED NMAC LTSS BTWN ACR X AND Y. PLTDEV.
Narrative: ACR X SEBOUND CLBING TO FL190. ACR Y SWBOUND DSNDING TO FL200 XING PATHS. ACR X ADVISED RESPONDING TO A TCASII RA TO CLB. THIS RESOLUTION CAUSED AN NMAC BTWN 2 ACRS. ACR Y, ALTHOUGH TCASII EQUIPPED, DID NOT RESPOND TO RA. PLT (ACR Y) CITED ACR X IN SIGHT AS REASON FOR NOT RESPONDING TO DSCNT RA. IN THE 12 SECONDS THAT THIS EVENT OCCURRED, ACR X CLBED 2000 FT. TCASII HAS TAKEN A CTLED SIT AND TURNED IT INTO A NMAC MAKING POSITIVE CTL AIRSPACE A THING OF THE PAST SINCE NO ONE NOW HAS CTL AND EACH ACFT IS FREE TO DECIDE ITS OWN PATH.
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.