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While on a visual approach base leg, ATC tower intervened and instructed the flight crew to make an immediate turn for traffic separation with another aircraft making an approach to a parallel runway.
| Attributes | |
| ACN | 332702 |
| Time | |
| Date | 199604 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ont |
| State Reference | CA |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont tower : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent other other |
| Route In Use | approach : visual arrival other arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 6000 flight time type : 2500 |
| ASRS Report | 332702 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 5000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
On the ziggy arrival from las to ont in the general vicinity of garey intersection and in a descent from 12000 ft, socal approach cleared us for a visual approach to runway 8R at ont. We were told to turn base at 3000 ft or above. I was the PF. The captain queried if we were following traffic and we were informed we were 15 mi behind air carrier Y, to continue and that we wouldn't catch him. We slowed on downwind and configured abeam the airport for a high left base to runway 8R. As we turned base the socal controller also was busy with traffic to other airports, didn't hand us over to tower so we changed to tower at about 3000 ft MSL. Ont tower gave us an immediate right turn to 270 degrees and a climb to 4000 ft. As we started our turn we saw air carrier Y outside us on final. We made our turn, climbed to 4000 ft, and after passing air carrier Y, we were given a 180 degree turn back to the airport for a visual and uneventful landing on runway 8R. After being given our initial clearance for the visual approach we were never again notified of the position of the aircraft.
Original NASA ASRS Text
Title: WHILE ON A VISUAL APCH BASE LEG, ATC TWR INTERVENED AND INSTRUCTED THE FLC TO MAKE AN IMMEDIATE TURN FOR TFC SEPARATION WITH ANOTHER ACFT MAKING AN APCH TO A PARALLEL RWY.
Narrative: ON THE ZIGGY ARR FROM LAS TO ONT IN THE GENERAL VICINITY OF GAREY INTXN AND IN A DSCNT FROM 12000 FT, SOCAL APCH CLRED US FOR A VISUAL APCH TO RWY 8R AT ONT. WE WERE TOLD TO TURN BASE AT 3000 FT OR ABOVE. I WAS THE PF. THE CAPT QUERIED IF WE WERE FOLLOWING TFC AND WE WERE INFORMED WE WERE 15 MI BEHIND ACR Y, TO CONTINUE AND THAT WE WOULDN'T CATCH HIM. WE SLOWED ON DOWNWIND AND CONFIGURED ABEAM THE ARPT FOR A HIGH L BASE TO RWY 8R. AS WE TURNED BASE THE SOCAL CTLR ALSO WAS BUSY WITH TFC TO OTHER ARPTS, DIDN'T HAND US OVER TO TWR SO WE CHANGED TO TWR AT ABOUT 3000 FT MSL. ONT TWR GAVE US AN IMMEDIATE R TURN TO 270 DEGS AND A CLB TO 4000 FT. AS WE STARTED OUR TURN WE SAW ACR Y OUTSIDE US ON FINAL. WE MADE OUR TURN, CLBED TO 4000 FT, AND AFTER PASSING ACR Y, WE WERE GIVEN A 180 DEG TURN BACK TO THE ARPT FOR A VISUAL AND UNEVENTFUL LNDG ON RWY 8R. AFTER BEING GIVEN OUR INITIAL CLRNC FOR THE VISUAL APCH WE WERE NEVER AGAIN NOTIFIED OF THE POS OF THE ACFT.
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.