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Air carrier X non adherence to ATC instruction refused radar vector. Used TCASII for traffic avoidance.
| Attributes | |
| ACN | 283769 |
| Time | |
| Date | 199409 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : bdl |
| State Reference | CT |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bdl |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller radar : 9 |
| ASRS Report | 283769 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : clearance other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X departure off bdl issued heading 210 degrees 10000 ft on initial and issued traffic on primary target 6 southeast bdl nebound unknown. X started turn and reported traffic on TCASII. I rescanned and noticed a transponder aircraft 5 southeast bdl, no mode C. I reissued primary and turn transponder aircraft to X. X said he'd hold his heading approximately 120 degrees keep us advised. After 5 mi I issued traffic no factor turn right heading 23 degrees. Pilots are becoming more accustomed to using TCASII as their sole traffic information. If they see traffic on their TCASII they assume it's the traffic being issued, especially in the terminal area when we say 'unknown' it could be 2 things no mode C, or no transponder primary target which would not be displayed on TCASII this happens often enough. Also I thought (again) that TCASII aircraft were not supposed to use lateral moves based on TCASII information.
Original NASA ASRS Text
Title: ACR X NON ADHERENCE TO ATC INSTRUCTION REFUSED RADAR VECTOR. USED TCASII FOR TFC AVOIDANCE.
Narrative: ACR X DEP OFF BDL ISSUED HDG 210 DEGS 10000 FT ON INITIAL AND ISSUED TFC ON PRIMARY TARGET 6 SE BDL NEBOUND UNKNOWN. X STARTED TURN AND RPTED TFC ON TCASII. I RESCANNED AND NOTICED A XPONDER ACFT 5 SE BDL, NO MODE C. I REISSUED PRIMARY AND TURN XPONDER ACFT TO X. X SAID HE'D HOLD HIS HDG APPROX 120 DEGS KEEP US ADVISED. AFTER 5 MI I ISSUED TFC NO FACTOR TURN R HDG 23 DEGS. PLTS ARE BECOMING MORE ACCUSTOMED TO USING TCASII AS THEIR SOLE TFC INFO. IF THEY SEE TFC ON THEIR TCASII THEY ASSUME IT'S THE TFC BEING ISSUED, ESPECIALLY IN THE TERMINAL AREA WHEN WE SAY 'UNKNOWN' IT COULD BE 2 THINGS NO MODE C, OR NO XPONDER PRIMARY TARGET WHICH WOULD NOT BE DISPLAYED ON TCASII THIS HAPPENS OFTEN ENOUGH. ALSO I THOUGHT (AGAIN) THAT TCASII ACFT WERE NOT SUPPOSED TO USE LATERAL MOVES BASED ON TCASII INFO.
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.