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Air carrier X non adherence to ATC clearance TCASII TA RA climb evasive action taken from VFR cpr Y. Pilot deviation.
| Attributes | |
| ACN | 210846 |
| Time | |
| Date | 199205 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : bwi |
| State Reference | MD |
| Altitude | msl bound lower : 6000 msl bound upper : 6500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bwi tracon : alo |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, High Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 7500 flight time type : 1500 |
| ASRS Report | 210846 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 2000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Air carrier X was descending for landing at bwi. We were issued clearance to 5000 ft. At 6500 ft we're instructed to level at 6000 ft due to traffic at 12 O'clock, 8 mi at 5500 ft (was not in visual sight). After approximately 45 seconds TCASII issued an RA to climb plus 1500 to 2000 FPM. We climbed to 6500 ft and TCASII issued a clear of conflict. We then spotted aircraft to our 2-3 O'clock at distances described on front. It was a cpr Y, light transport. Although possibly no conflict existed, per our operations manual, we are not allowed to disregard TCASII RA's. I was instructed to call bwi TRACON where I was questioned about the TCASII instruction and was told incident would be written up. I would suggest controllers be more informed about TCASII and how they operate.
Original NASA ASRS Text
Title: ACR X NON ADHERENCE TO ATC CLRNC TCASII TA RA CLB EVASIVE ACTION TAKEN FROM VFR CPR Y. PLTDEV.
Narrative: ACR X WAS DSNDING FOR LNDG AT BWI. WE WERE ISSUED CLRNC TO 5000 FT. AT 6500 FT WE'RE INSTRUCTED TO LEVEL AT 6000 FT DUE TO TFC AT 12 O'CLOCK, 8 MI AT 5500 FT (WAS NOT IN VISUAL SIGHT). AFTER APPROX 45 SECONDS TCASII ISSUED AN RA TO CLB PLUS 1500 TO 2000 FPM. WE CLBED TO 6500 FT AND TCASII ISSUED A CLR OF CONFLICT. WE THEN SPOTTED ACFT TO OUR 2-3 O'CLOCK AT DISTANCES DESCRIBED ON FRONT. IT WAS A CPR Y, LTT. ALTHOUGH POSSIBLY NO CONFLICT EXISTED, PER OUR OPS MANUAL, WE ARE NOT ALLOWED TO DISREGARD TCASII RA'S. I WAS INSTRUCTED TO CALL BWI TRACON WHERE I WAS QUESTIONED ABOUT THE TCASII INSTRUCTION AND WAS TOLD INCIDENT WOULD BE WRITTEN UP. I WOULD SUGGEST CTLRS BE MORE INFORMED ABOUT TCASII AND HOW THEY OPERATE.
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.