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An air carrier medium large transport descends from assigned altitude in response to a TCASII RA. Other descending traffic was in proximity.
| Attributes | |
| ACN | 405569 |
| Time | |
| Date | 199806 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : den |
| State Reference | CO |
| Altitude | msl bound lower : 25500 msl bound upper : 26000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other cruise other |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : cfi pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 225 flight time total : 12000 flight time type : 4000 |
| ASRS Report | 405569 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 7500 vertical : 500 |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Cruising level at FL260 southeast of denver deviating east of the departure for thunderstorms and WX. Heading about 135 degrees near drake intersection we receive a TA from opposite direction converging traffic at FL270. Traffic started a descent and we received an RA TCASII to descend. Turned autoplt off and went down to FL255 before conflict was resolved. Other traffic never stopped its descent. We also turned left while descending to help avoid this traffic, climbed back to FL260 and advised ATC.
Original NASA ASRS Text
Title: AN ACR MLG DSNDS FROM ASSIGNED ALT IN RESPONSE TO A TCASII RA. OTHER DSNDING TFC WAS IN PROX.
Narrative: CRUISING LEVEL AT FL260 SE OF DENVER DEVIATING E OF THE DEP FOR TSTMS AND WX. HEADING ABOUT 135 DEGS NEAR DRAKE INTXN WE RECEIVE A TA FROM OPPOSITE DIRECTION CONVERGING TFC AT FL270. TFC STARTED A DSCNT AND WE RECEIVED AN RA TCASII TO DSND. TURNED AUTOPLT OFF AND WENT DOWN TO FL255 BEFORE CONFLICT WAS RESOLVED. OTHER TFC NEVER STOPPED ITS DSCNT. WE ALSO TURNED L WHILE DSNDING TO HELP AVOID THIS TFC, CLBED BACK TO FL260 AND ADVISED ATC.
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.