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Flight crew of an air carrier descended in response to a TCASII RA resulting in descending into another air carrier aircraft's airspace.
| Attributes | |
| ACN | 438234 |
| Time | |
| Date | 199905 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zdc.artcc |
| State Reference | DC |
| Altitude | msl bound lower : 22000 msl bound upper : 25000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 10 |
| ASRS Report | 438234 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took precautionary avoidance action |
| Consequence | Other |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X northbound at FL250, aircraft Y sbound descending to FL220. Turned aircraft X to 090 degree heading. Aircraft X did not turn. Got in conflict with aircraft Y then descended for TCASII alert into other traffic at FL240.
Original NASA ASRS Text
Title: FLC OF AN ACR DSNDED IN RESPONSE TO A TCASII RA RESULTING IN DSNDING INTO ANOTHER ACR ACFT'S AIRSPACE.
Narrative: ACFT X NBOUND AT FL250, ACFT Y SBOUND DSNDING TO FL220. TURNED ACFT X TO 090 DEG HDG. ACFT X DID NOT TURN. GOT IN CONFLICT WITH ACFT Y THEN DSNDED FOR TCASII ALERT INTO OTHER TFC AT FL240.
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.