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B757 flight crew responded to TCASII RA during descent approach phase. Controller queried the flight crew's non-communication.
| Attributes | |
| ACN | 313613 |
| Time | |
| Date | 199508 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sna |
| State Reference | CA |
| Altitude | msl bound lower : 3600 msl bound upper : 3900 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sna |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 313613 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 16000 flight time type : 1000 |
| ASRS Report | 313622 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On the eastside 1 arrival at sna just prior to snake intersection we got an RA on the TCASII with a command to climb. I immediately started to climb at the commanded rate of about 2000 FPM. As we were in the climb of about 300 ft at 2000 FPM, looking for the traffic and trying to get a break in radio traffic to notify approach control, the controller told us that if we had an RA, we needed to tell them. By that time (approximately 10 seconds from initial RA) we were clear of conflict. We returned to the approach path and landed uneventfully. Supplemental information from acn 313622: approaching vicinity of snake intersection on FMS eastside arrival got TA for traffic. ATC advised traffic position. TA became RA. We climbed from approximately 3600 ft MSL to 3900 ft MSL. Problem arose by having VFR traffic in air carrier approach airspace. Recommend this airspace to be positively controled.
Original NASA ASRS Text
Title: B757 FLC RESPONDED TO TCASII RA DURING DSCNT APCH PHASE. CTLR QUERIED THE FLC'S NON-COM.
Narrative: ON THE EASTSIDE 1 ARR AT SNA JUST PRIOR TO SNAKE INTXN WE GOT AN RA ON THE TCASII WITH A COMMAND TO CLB. I IMMEDIATELY STARTED TO CLB AT THE COMMANDED RATE OF ABOUT 2000 FPM. AS WE WERE IN THE CLB OF ABOUT 300 FT AT 2000 FPM, LOOKING FOR THE TFC AND TRYING TO GET A BREAK IN RADIO TFC TO NOTIFY APCH CTL, THE CTLR TOLD US THAT IF WE HAD AN RA, WE NEEDED TO TELL THEM. BY THAT TIME (APPROX 10 SECONDS FROM INITIAL RA) WE WERE CLR OF CONFLICT. WE RETURNED TO THE APCH PATH AND LANDED UNEVENTFULLY. SUPPLEMENTAL INFO FROM ACN 313622: APCHING VICINITY OF SNAKE INTXN ON FMS EASTSIDE ARR GOT TA FOR TFC. ATC ADVISED TFC POS. TA BECAME RA. WE CLBED FROM APPROX 3600 FT MSL TO 3900 FT MSL. PROB AROSE BY HAVING VFR TFC IN ACR APCH AIRSPACE. RECOMMEND THIS AIRSPACE TO BE POSITIVELY CTLED.
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.