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Captain of a B737-800 stopped climb and descended in response to a TCASII RA after ARTCC controller advised to increase his climb rate to provide separation with a cessna citation.
| Attributes | |
| ACN | 485572 |
| Time | |
| Date | 200009 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : psp.airport |
| State Reference | CA |
| Altitude | msl bound lower : 14000 msl bound upper : 14500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Cessna Citation Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 16000 flight time type : 6000 |
| ASRS Report | 485572 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | controller : issued advisory flight crew : took precautionary avoidance action |
| Miss Distance | horizontal : 6000 vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
We were issued climb clearance to FL230. ZLA issued traffic at 1 O'clock, nwbound, 14000 ft, citation. First officer sighted traffic. Center suggested expedited climb through 16000 ft. I pulled the nose up and immediately received a descend RA. I responded to RA, lowering nose and descending. TCASII registered 500 ft separation, then conflict clear was announced and I continued climb. I feel an increased climb would have given better separation, but I feared the other aircraft might be following a climb RA. The other aircraft appeared not to change its flight path at all.
Original NASA ASRS Text
Title: CAPT OF A B737-800 STOPPED CLB AND DSNDED IN RESPONSE TO A TCASII RA AFTER ARTCC CTLR ADVISED TO INCREASE HIS CLB RATE TO PROVIDE SEPARATION WITH A CESSNA CITATION.
Narrative: WE WERE ISSUED CLB CLRNC TO FL230. ZLA ISSUED TFC AT 1 O'CLOCK, NWBOUND, 14000 FT, CITATION. FO SIGHTED TFC. CTR SUGGESTED EXPEDITED CLB THROUGH 16000 FT. I PULLED THE NOSE UP AND IMMEDIATELY RECEIVED A DSND RA. I RESPONDED TO RA, LOWERING NOSE AND DSNDING. TCASII REGISTERED 500 FT SEPARATION, THEN CONFLICT CLR WAS ANNOUNCED AND I CONTINUED CLB. I FEEL AN INCREASED CLB WOULD HAVE GIVEN BETTER SEPARATION, BUT I FEARED THE OTHER ACFT MIGHT BE FOLLOWING A CLB RA. THE OTHER ACFT APPEARED NOT TO CHANGE ITS FLT PATH AT ALL.
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.