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TCASII RA causes air carrier widebody transport PIC to execute evasive action climb in response to other aircraft.
| Attributes | |
| ACN | 200592 |
| Time | |
| Date | 199201 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lax |
| State Reference | CA |
| Altitude | msl bound lower : 16000 msl bound upper : 17700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax tower : alb |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | approach : straight in arrival other arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 112 flight time total : 16331 flight time type : 1695 |
| ASRS Report | 200592 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 800 vertical : 800 |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
With descent clearance to 16000 ft controller gave us traffic information a couple of times. First officer unable to acknowledge because of usual frequency congestion. I did not see traffic. I heard a clearance to level at 17000 ft but did not hear who clearance was for. First officer unable to clarify because of frequency congestion. I said I'd level at 17000 until we could sort it out. At 17300 ft TCASII gave a RA to climb. I added power and went from shallow descent to about 1500 FPM climb then RA went away and resumed descent towards 17000 ft. First officer told controller we had a TCASII event. Controller responded in a defensive, hostile manner, saying he'd issued TAS 2 or 3 times. First officer responded about the frequency congestion and unable to acknowledge.
Original NASA ASRS Text
Title: TCASII RA CAUSES ACR WDB PIC TO EXECUTE EVASIVE ACTION CLB IN RESPONSE TO OTHER ACFT.
Narrative: WITH DSCNT CLRNC TO 16000 FT CTLR GAVE US TFC INFO A COUPLE OF TIMES. FO UNABLE TO ACKNOWLEDGE BECAUSE OF USUAL FREQ CONGESTION. I DID NOT SEE TFC. I HEARD A CLRNC TO LEVEL AT 17000 FT BUT DID NOT HEAR WHO CLRNC WAS FOR. FO UNABLE TO CLARIFY BECAUSE OF FREQ CONGESTION. I SAID I'D LEVEL AT 17000 UNTIL WE COULD SORT IT OUT. AT 17300 FT TCASII GAVE A RA TO CLB. I ADDED PWR AND WENT FROM SHALLOW DSCNT TO ABOUT 1500 FPM CLB THEN RA WENT AWAY AND RESUMED DSCNT TOWARDS 17000 FT. FO TOLD CTLR WE HAD A TCASII EVENT. CTLR RESPONDED IN A DEFENSIVE, HOSTILE MANNER, SAYING HE'D ISSUED TAS 2 OR 3 TIMES. FO RESPONDED ABOUT THE FREQ CONGESTION AND UNABLE TO ACKNOWLEDGE.
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.