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Air carrier X non adherence to ATC clearance TCASII TA RA climb had conflict with aircraft Y. Evasive action taken. See and avoid concept.
| Attributes | |
| ACN | 205594 |
| Time | |
| Date | 199203 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aml |
| State Reference | VA |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 12000 flight time type : 200 |
| ASRS Report | 205594 |
| 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 other controllera |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 600 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
On approach to washington dulles airport, approximately 25 NM west, 275 radial aml VOR and descending from 10000 ft to 5000 ft, we got a TCASII TA. This was immediately followed by ATC controller advisory of traffic at 12 O'clock. Immediately TCASII RA of 'climb, climb' followed. We complied with TCASII and climbed 700 ft. Aircraft Y was sighted passing 9 O'clock and a few hundred ft below and approach was advised. TCASII information was excellent.
Original NASA ASRS Text
Title: ACR X NON ADHERENCE TO ATC CLRNC TCASII TA RA CLB HAD CONFLICT WITH ACFT Y. EVASIVE ACTION TAKEN. SEE AND AVOID CONCEPT.
Narrative: ON APCH TO WASHINGTON DULLES ARPT, APPROX 25 NM W, 275 RADIAL AML VOR AND DSNDING FROM 10000 FT TO 5000 FT, WE GOT A TCASII TA. THIS WAS IMMEDIATELY FOLLOWED BY ATC CTLR ADVISORY OF TFC AT 12 O'CLOCK. IMMEDIATELY TCASII RA OF 'CLB, CLB' FOLLOWED. WE COMPLIED WITH TCASII AND CLBED 700 FT. ACFT Y WAS SIGHTED PASSING 9 O'CLOCK AND A FEW HUNDRED FT BELOW AND APCH WAS ADVISED. TCASII INFO WAS EXCELLENT.
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.