 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Near midair collision between 2 CL65 aircraft descending from 15000 ft MSL. Reporter flight crew stopped descent and climbed in response to TCASII RA. Other aircraft was then sighted passing below at close range.
| Attributes | |
| ACN | 542768 |
| Time | |
| Date | 200204 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : bitho |
| State Reference | FL |
| Altitude | msl bound lower : 10000 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 542768 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 500 vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We were given a descent from 15000 ft to 10000 ft. After establishing the descent, it became apparent that we would be coming fairly close to a TCASII target beneath us once the target entered 5 mi. I reduced TCASII display range to gain better detail. At that point, the target became red and an RA was announced. The captain disengaged the autoplt and began a shallow climb to avoid the target. We saw the other rj pass below at close range. I advised ATC of the RA and climb. As soon as the captain began maneuvering. After 'clear of conflict' was received, we descended down to our target altitude.
Original NASA ASRS Text
Title: NMAC BTWN 2 CL65 ACFT DSNDING FROM 15000 FT MSL. RPTR FLC STOPPED DSCNT AND CLBED IN RESPONSE TO TCASII RA. OTHER ACFT WAS THEN SIGHTED PASSING BELOW AT CLOSE RANGE.
Narrative: WE WERE GIVEN A DSCNT FROM 15000 FT TO 10000 FT. AFTER ESTABLISHING THE DSCNT, IT BECAME APPARENT THAT WE WOULD BE COMING FAIRLY CLOSE TO A TCASII TARGET BENEATH US ONCE THE TARGET ENTERED 5 MI. I REDUCED TCASII DISPLAY RANGE TO GAIN BETTER DETAIL. AT THAT POINT, THE TARGET BECAME RED AND AN RA WAS ANNOUNCED. THE CAPT DISENGAGED THE AUTOPLT AND BEGAN A SHALLOW CLB TO AVOID THE TARGET. WE SAW THE OTHER RJ PASS BELOW AT CLOSE RANGE. I ADVISED ATC OF THE RA AND CLB. AS SOON AS THE CAPT BEGAN MANEUVERING. AFTER 'CLR OF CONFLICT' WAS RECEIVED, WE DSNDED DOWN TO OUR TARGET ALT.
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.