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Medium large transport aircraft on approach to ont told to level account VFR traffic. TCASII information showed aircraft 400 ft below. Flight crew made missed approach.
| Attributes | |
| ACN | 194830 |
| Time | |
| Date | 199111 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ont |
| State Reference | CA |
| Altitude | msl bound lower : 2500 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other descent : approach landing : missed approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 230 flight time total : 17000 flight time type : 2000 |
| ASRS Report | 194830 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Events | |
| Anomaly | conflict : nmac inflight encounter : weather |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Couldn't accept a visual approach to 8L because of haze and sun angle prevented us from seeing the airport. Approach vectored us for an ILS 8L. At approximately the OM as we were doing the final check, he told us to level at 2500 ft, aircraft at 12 O'clock. As I leveled off we received a TCASII RA to climb. We made the missed approach and were vectored for another approach to a landing. The TCASII gave us good information because I spotted a light aircraft to the left of the nose approximately 400 ft below us going through the final approach course from south to north. The tower and approach controller both thought that the target was a banner tow aircraft that was told to remain south of the airport. I couldn't see a banner on this aircraft.
Original NASA ASRS Text
Title: MLG ACFT ON APCH TO ONT TOLD TO LEVEL ACCOUNT VFR TFC. TCASII INFO SHOWED ACFT 400 FT BELOW. FLC MADE MISSED APCH.
Narrative: COULDN'T ACCEPT A VISUAL APCH TO 8L BECAUSE OF HAZE AND SUN ANGLE PREVENTED US FROM SEEING THE ARPT. APCH VECTORED US FOR AN ILS 8L. AT APPROX THE OM AS WE WERE DOING THE FINAL CHK, HE TOLD US TO LEVEL AT 2500 FT, ACFT AT 12 O'CLOCK. AS I LEVELED OFF WE RECEIVED A TCASII RA TO CLB. WE MADE THE MISSED APCH AND WERE VECTORED FOR ANOTHER APCH TO A LNDG. THE TCASII GAVE US GOOD INFO BECAUSE I SPOTTED A LIGHT ACFT TO THE L OF THE NOSE APPROX 400 FT BELOW US GOING THROUGH THE FINAL APCH COURSE FROM S TO N. THE TWR AND APCH CTLR BOTH THOUGHT THAT THE TARGET WAS A BANNER TOW ACFT THAT WAS TOLD TO REMAIN S OF THE ARPT. I COULDN'T SEE A BANNER ON THIS 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.