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Potential conflict bordering on an near midair collision between a climbing B737 and another aircraft at 15500 ft during a SID departure.
| Attributes | |
| ACN | 622280 |
| Time | |
| Date | 200305 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zhu.artcc |
| State Reference | TX |
| Altitude | msl bound lower : 15200 msl bound upper : 15500 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu.artcc tower : phx.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zhu.artcc |
| Make Model Name | Commercial Fixed Wing |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain |
| Experience | flight time last 90 days : 240 flight time total : 18600 flight time type : 12000 |
| ASRS Report | 622280 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took evasive action other |
| Miss Distance | horizontal : 6000 vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
While climbing to FL230, passing 15200 ft, a TCASII alert sounded immediately followed by an RA commanding a descent. First officer was flying on autoplt and looking outside for traffic. I took control of the aircraft, disconnected the autoplt, announced to the first officer that 'I have the aircraft,' and responded immediately to the RA descent command. At the same time I announced to ATC that I was responding to an RA. The controller said 'he should pass off to your right' and I repeated to him that I was responding to an RA. The controller finally said 'roger.' at 14700 ft the TCASII announced 'clear of conflict' and I told ATC we were continuing our climb to FL230. I printed out the TCASII event from the FMC and it is available, if required.
Original NASA ASRS Text
Title: POTENTIAL CONFLICT BORDERING ON AN NMAC BTWN A CLBING B737 AND ANOTHER ACFT AT 15500 FT DURING A SID DEP.
Narrative: WHILE CLBING TO FL230, PASSING 15200 FT, A TCASII ALERT SOUNDED IMMEDIATELY FOLLOWED BY AN RA COMMANDING A DSCNT. FO WAS FLYING ON AUTOPLT AND LOOKING OUTSIDE FOR TFC. I TOOK CTL OF THE ACFT, DISCONNECTED THE AUTOPLT, ANNOUNCED TO THE FO THAT 'I HAVE THE ACFT,' AND RESPONDED IMMEDIATELY TO THE RA DSCNT COMMAND. AT THE SAME TIME I ANNOUNCED TO ATC THAT I WAS RESPONDING TO AN RA. THE CTLR SAID 'HE SHOULD PASS OFF TO YOUR R' AND I REPEATED TO HIM THAT I WAS RESPONDING TO AN RA. THE CTLR FINALLY SAID 'ROGER.' AT 14700 FT THE TCASII ANNOUNCED 'CLR OF CONFLICT' AND I TOLD ATC WE WERE CONTINUING OUR CLB TO FL230. I PRINTED OUT THE TCASII EVENT FROM THE FMC AND IT IS AVAILABLE, IF REQUIRED.
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.