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Near midair collision between a CL600 on a SID in level flight at 20 mi out from ind airport and a light twin climbing pass 200 ft to their right. The CL600 captain responded to the TCASII warning and then the other aircraft was sighted after the captain was taking evasive action.
| Attributes | |
| ACN | 521688 |
| Time | |
| Date | 200108 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : vhp.vortac |
| State Reference | IN |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ind.tracon tower : ont.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL600 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Route In Use | departure sid : whitewater |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : ind.tracon |
| Operator | common carrier : charter |
| Make Model Name | Small Aircraft, Low Wing, 2 Eng, Retractable Gear |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 48 flight time total : 14330 flight time type : 3408 |
| ASRS Report | 521688 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : nmac other spatial deviation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action flight crew : overrode automation |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 200 vertical : 0 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure Environmental Factor |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were proceeding from cvg to ind on cvg's 'whitewater' SID and tracking right along the depicted route using the FMS to navigation. We were in contact with ind approach control. A solid-blue-square target appeared on the TCASII. When I first noticed it, it was about 1000 ft below and slightly right and just ahead of the nose. I couldn't see it visually. It then showed a climb arrow and the vertical separation rapidly narrowed until, in quick succession, the target went from blue to yellow to red and an RA was generated commanding us to descend at least 3000 FPM. At that point our own-aircraft-symbol was superimposed right over the target. I disconnected the autoplt and simultaneously brought the thrust levers to idle, rolled up on the left wing (based on my perception that the target was slightly off to our right), and dumped the nose. The first officer and our jump seat rider both saw a white and red marked, light twin aircraft pass just off our right side. We queried ind approach control, but they had no knowledge of this aircraft being in our vicinity. We surmised it may have been a skydiver aircraft. The TCASII likely saved us from a midair.
Original NASA ASRS Text
Title: NMAC BTWN A CL600 ON A SID IN LEVEL FLT AT 20 MI OUT FROM IND ARPT AND A LIGHT TWIN CLBING PASS 200 FT TO THEIR R. THE CL600 CAPT RESPONDED TO THE TCASII WARNING AND THEN THE OTHER ACFT WAS SIGHTED AFTER THE CAPT WAS TAKING EVASIVE ACTION.
Narrative: WE WERE PROCEEDING FROM CVG TO IND ON CVG'S 'WHITEWATER' SID AND TRACKING RIGHT ALONG THE DEPICTED RTE USING THE FMS TO NAV. WE WERE IN CONTACT WITH IND APCH CTL. A SOLID-BLUE-SQUARE TARGET APPEARED ON THE TCASII. WHEN I FIRST NOTICED IT, IT WAS ABOUT 1000 FT BELOW AND SLIGHTLY R AND JUST AHEAD OF THE NOSE. I COULDN'T SEE IT VISUALLY. IT THEN SHOWED A CLB ARROW AND THE VERT SEPARATION RAPIDLY NARROWED UNTIL, IN QUICK SUCCESSION, THE TARGET WENT FROM BLUE TO YELLOW TO RED AND AN RA WAS GENERATED COMMANDING US TO DSND AT LEAST 3000 FPM. AT THAT POINT OUR OWN-ACFT-SYMBOL WAS SUPERIMPOSED RIGHT OVER THE TARGET. I DISCONNECTED THE AUTOPLT AND SIMULTANEOUSLY BROUGHT THE THRUST LEVERS TO IDLE, ROLLED UP ON THE L WING (BASED ON MY PERCEPTION THAT THE TARGET WAS SLIGHTLY OFF TO OUR R), AND DUMPED THE NOSE. THE FO AND OUR JUMP SEAT RIDER BOTH SAW A WHITE AND RED MARKED, LIGHT TWIN ACFT PASS JUST OFF OUR R SIDE. WE QUERIED IND APCH CTL, BUT THEY HAD NO KNOWLEDGE OF THIS ACFT BEING IN OUR VICINITY. WE SURMISED IT MAY HAVE BEEN A SKYDIVER ACFT. THE TCASII LIKELY SAVED US FROM A MIDAIR.
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.