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A crj on climb out receives a TCASII RA alert on a MU2 cruising at 17000 ft and quickly descends to 16000 ft preventing a separation loss. The 2 aircraft were being handled by ZBW ARTCC.
| Attributes | |
| ACN | 628363 |
| Time | |
| Date | 200408 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : hto.vortac |
| State Reference | NY |
| Altitude | msl single value : 17000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | general aviation : personal |
| Make Model Name | MU-2 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : vacating altitude cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 21 controller time certified in position1 : 11 |
| ASRS Report | 628363 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : radar/mode c aircraft equipment : tcas other controllera other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 33000 vertical : 1000 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
Narrative:
MU2 eastbound at 17000 ft. CRJ2 climbing swbound. I misjudged crj's climb rate. Crj's TCASII told him to descend to 16000 ft. Ended up with 5.5 mi, 1000 ft head to head and closing fast. I now love TCASII!
Original NASA ASRS Text
Title: A CRJ ON CLBOUT RECEIVES A TCASII RA ALERT ON A MU2 CRUISING AT 17000 FT AND QUICKLY DSNDS TO 16000 FT PREVENTING A SEPARATION LOSS. THE 2 ACFT WERE BEING HANDLED BY ZBW ARTCC.
Narrative: MU2 EBOUND AT 17000 FT. CRJ2 CLBING SWBOUND. I MISJUDGED CRJ'S CLB RATE. CRJ'S TCASII TOLD HIM TO DSND TO 16000 FT. ENDED UP WITH 5.5 MI, 1000 FT HEAD TO HEAD AND CLOSING FAST. I NOW LOVE TCASII!
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.