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Flight crew of a C550 citation steepened their bank in response to a TCASII RA, and complying with an ARTCC controller heading change for traffic separation.
| Attributes | |
| ACN | 462160 |
| Time | |
| Date | 200001 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| State Reference | IL |
| Altitude | msl single value : 30000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Citation III, VI, VII |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : vacating altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 5900 |
| ASRS Report | 462160 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment : tcas other controllera other flight crewa other flight crewb other other : 3 |
| Resolutory Action | controller : issued alert controller : separated traffic flight crew : took precautionary avoidance action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
At approximately XA30 near vandalia, il, we were given a descent to FL280. At the time when we descended through approximately FL300, ZKC told us to make an immediate left turn without delay to a 270 degree heading due to traffic. (At this time we were direct to moline, il, on about a 320 degree heading.) I immediately banked the cessna citation 650 to about 40-45 degrees to get to the west 270 degree heading as soon as possible. The other aircraft involved was told to turn left to a 090 degree heading immediately. Right after we were given the new heading by ATC, the traffic appeared on TCASII and we heard the TCASII say 'traffic, traffic, monitor vertical speed.' as I was turning, I glanced and saw the traffic on TCASII. As I continued the turn to 270 degrees, I also temporarily leveled off to avoid descending any further. Once I saw we were clear of the traffic, I continued the descent to FL280, which was about 1 min later. We were then told to proceed back on course. I believe that it is sometimes hard to see traffic at night below you in a descent if there are many lights on the ground, because the aircraft lights sometimes blend in with city lights. I called ZKC when we got on the ground and they told me that we got as close as 1000 ft and 3.7 mi.
Original NASA ASRS Text
Title: FLC OF A C550 CITATION STEEPENED THEIR BANK IN RESPONSE TO A TCASII RA, AND COMPLYING WITH AN ARTCC CTLR HDG CHANGE FOR TFC SEPARATION.
Narrative: AT APPROX XA30 NEAR VANDALIA, IL, WE WERE GIVEN A DSCNT TO FL280. AT THE TIME WHEN WE DSNDED THROUGH APPROX FL300, ZKC TOLD US TO MAKE AN IMMEDIATE L TURN WITHOUT DELAY TO A 270 DEG HDG DUE TO TFC. (AT THIS TIME WE WERE DIRECT TO MOLINE, IL, ON ABOUT A 320 DEG HDG.) I IMMEDIATELY BANKED THE CESSNA CITATION 650 TO ABOUT 40-45 DEGS TO GET TO THE W 270 DEG HDG ASAP. THE OTHER ACFT INVOLVED WAS TOLD TO TURN L TO A 090 DEG HDG IMMEDIATELY. RIGHT AFTER WE WERE GIVEN THE NEW HDG BY ATC, THE TFC APPEARED ON TCASII AND WE HEARD THE TCASII SAY 'TFC, TFC, MONITOR VERT SPD.' AS I WAS TURNING, I GLANCED AND SAW THE TFC ON TCASII. AS I CONTINUED THE TURN TO 270 DEGS, I ALSO TEMPORARILY LEVELED OFF TO AVOID DSNDING ANY FURTHER. ONCE I SAW WE WERE CLR OF THE TFC, I CONTINUED THE DSCNT TO FL280, WHICH WAS ABOUT 1 MIN LATER. WE WERE THEN TOLD TO PROCEED BACK ON COURSE. I BELIEVE THAT IT IS SOMETIMES HARD TO SEE TFC AT NIGHT BELOW YOU IN A DSCNT IF THERE ARE MANY LIGHTS ON THE GND, BECAUSE THE ACFT LIGHTS SOMETIMES BLEND IN WITH CITY LIGHTS. I CALLED ZKC WHEN WE GOT ON THE GND AND THEY TOLD ME THAT WE GOT AS CLOSE AS 1000 FT AND 3.7 MI.
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.