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DHC8 initiates TCASII maneuver due to an overflying CL65 caused by tower issued go around when departing phx.
| Attributes | |
| ACN | 506577 |
| Time | |
| Date | 200103 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phx.airport |
| State Reference | AZ |
| Altitude | agl single value : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : phx.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : initial |
| Route In Use | departure sid : ns |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : phx.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 175 flight time total : 3600 flight time type : 250 |
| ASRS Report | 506577 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation non adherence : published procedure |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We departed phx to ase departing from runway 8. We were cleared into position and hold after an air carrier Y B737 touched down. There was also an air carrier Z CL65 on final and cleared to land. This is a common practice. The air carrier Y B737 rolled out long and spent more time on the runway than the tower controller anticipated. The tower then cleared us for takeoff and decided that it was too close and commanded the CL65 to go around. During our climb out, I glanced at the TCASII (we may have had a TA alert, though I don't recall one) and noticed that we had a target 400 ft directly above us. I did not notice if they were climbing or not. I then commanded my first officer to shallow our climb. Approximately 30 seconds after that command, we received a TCASII command to 'monitor vertical speed,' to which we were already complying. To my knowledge the crew of the CL65 was never directed to offset or turn, and could not see us and we could not see them. If it weren't for the TCASII, I'm sure that we would have come closer than 400 ft.
Original NASA ASRS Text
Title: DHC8 INITIATES TCASII MANEUVER DUE TO AN OVERFLYING CL65 CAUSED BY TWR ISSUED GAR WHEN DEPARTING PHX.
Narrative: WE DEPARTED PHX TO ASE DEPARTING FROM RWY 8. WE WERE CLRED INTO POS AND HOLD AFTER AN ACR Y B737 TOUCHED DOWN. THERE WAS ALSO AN ACR Z CL65 ON FINAL AND CLRED TO LAND. THIS IS A COMMON PRACTICE. THE ACR Y B737 ROLLED OUT LONG AND SPENT MORE TIME ON THE RWY THAN THE TWR CTLR ANTICIPATED. THE TWR THEN CLRED US FOR TKOF AND DECIDED THAT IT WAS TOO CLOSE AND COMMANDED THE CL65 TO GO AROUND. DURING OUR CLBOUT, I GLANCED AT THE TCASII (WE MAY HAVE HAD A TA ALERT, THOUGH I DON'T RECALL ONE) AND NOTICED THAT WE HAD A TARGET 400 FT DIRECTLY ABOVE US. I DID NOT NOTICE IF THEY WERE CLBING OR NOT. I THEN COMMANDED MY FO TO SHALLOW OUR CLB. APPROX 30 SECONDS AFTER THAT COMMAND, WE RECEIVED A TCASII COMMAND TO 'MONITOR VERT SPD,' TO WHICH WE WERE ALREADY COMPLYING. TO MY KNOWLEDGE THE CREW OF THE CL65 WAS NEVER DIRECTED TO OFFSET OR TURN, AND COULD NOT SEE US AND WE COULD NOT SEE THEM. IF IT WEREN'T FOR THE TCASII, I'M SURE THAT WE WOULD HAVE COME CLOSER THAN 400 FT.
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.