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Near midair collision due to proximity to VFR traffic while responding to 3 descend climb TCASII RA's. No traffic had been issued by the controller prior to frequency change to another controller. Second controller asked whether previous controller had issued the traffic.
| Attributes | |
| ACN | 351217 |
| Time | |
| Date | 199610 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : vny |
| State Reference | CA |
| Altitude | msl bound lower : 7000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax tracon : ont |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors enroute airway : lax enroute airway : ont |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 5675 flight time type : 530 |
| ASRS Report | 351217 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 9200 flight time type : 120 |
| ASRS Report | 351380 |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 300 vertical : 300 |
Narrative:
My aircraft was cleared out of bur on the elmo 5 departure to join v- 186 (southeast) and to expect rv to join V-23 sli direct lgb. While on V-186 approximately 6 NM past elmo intersection, ATC (socal) stated, 'the follow-on ATC facility is not ready to accept your handoff, turn left immediately to heading 270 degrees.' after passing 350 degrees, ATC came back and stated, 'socal is now ready for you, make a right turn and proceed own navigation to rejoin V-186, contact socal on X frequency.' as we made the right turn, we received a TCASII RA with a descend/descend command. We complied only to receive a subsequent RA with climb commands. Before I could contact socal we received our third RA. After the 3 maneuvering events I made contact with socal. The new controller asked, 'didn't the previous controller issue TA's?' my answer was no. We probably didn't deviate more than plus or minus 600 ft from our assigned 7000 ft altitude. Basically, a lot took place during the vector off v- 186. Unfortunately, most of the maneuvering (TCASII RA) happened during a frequency change and without any TA's from ATC.
Original NASA ASRS Text
Title: NMAC DUE TO PROX TO VFR TFC WHILE RESPONDING TO 3 DSND CLB TCASII RA'S. NO TFC HAD BEEN ISSUED BY THE CTLR PRIOR TO FREQ CHANGE TO ANOTHER CTLR. SECOND CTLR ASKED WHETHER PREVIOUS CTLR HAD ISSUED THE TFC.
Narrative: MY ACFT WAS CLRED OUT OF BUR ON THE ELMO 5 DEP TO JOIN V- 186 (SE) AND TO EXPECT RV TO JOIN V-23 SLI DIRECT LGB. WHILE ON V-186 APPROX 6 NM PAST ELMO INTXN, ATC (SOCAL) STATED, 'THE FOLLOW-ON ATC FACILITY IS NOT READY TO ACCEPT YOUR HDOF, TURN L IMMEDIATELY TO HDG 270 DEGS.' AFTER PASSING 350 DEGS, ATC CAME BACK AND STATED, 'SOCAL IS NOW READY FOR YOU, MAKE A R TURN AND PROCEED OWN NAV TO REJOIN V-186, CONTACT SOCAL ON X FREQ.' AS WE MADE THE R TURN, WE RECEIVED A TCASII RA WITH A DSND/DSND COMMAND. WE COMPLIED ONLY TO RECEIVE A SUBSEQUENT RA WITH CLB COMMANDS. BEFORE I COULD CONTACT SOCAL WE RECEIVED OUR THIRD RA. AFTER THE 3 MANEUVERING EVENTS I MADE CONTACT WITH SOCAL. THE NEW CTLR ASKED, 'DIDN'T THE PREVIOUS CTLR ISSUE TA'S?' MY ANSWER WAS NO. WE PROBABLY DIDN'T DEVIATE MORE THAN PLUS OR MINUS 600 FT FROM OUR ASSIGNED 7000 FT ALT. BASICALLY, A LOT TOOK PLACE DURING THE VECTOR OFF V- 186. UNFORTUNATELY, MOST OF THE MANEUVERING (TCASII RA) HAPPENED DURING A FREQ CHANGE AND WITHOUT ANY TA'S FROM ATC.
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.