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Near midair collision in arsa between an air carrier medium large transport and an small aircraft on a VFR flight plan. Small aircraft in proximity of approach route.
| Attributes | |
| ACN | 253220 |
| Time | |
| Date | 199310 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ont |
| State Reference | CA |
| Altitude | msl bound lower : 4500 msl bound upper : 4500 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors enroute : direct enroute airway : ont |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Route In Use | arrival other arrival star : star enroute : on vectors |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 17000 flight time type : 9000 |
| ASRS Report | 253220 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac inflight encounter : weather non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action none taken : unable |
| Consequence | Other |
| Miss Distance | vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
TCASII worked great. It may have saved the day. Got TA followed by RA while descending to petis NDB from hector VOR on approach to ont, ca. We notified approach control of TCASII traffic 1400 ft below. He said turn right to 270 degree heading which put traffic directly below us. TCASII advised reduce descent and then RA climb which we did (ATC was advised of climb). Small single engine aircraft passed directly below us approximately 300 ft below. Visibility was very poor for us looking directly into sun and heavy haze. At one point the small aircraft advised he had us in sight.
Original NASA ASRS Text
Title: NMAC IN ARSA BTWN AN ACR MLG AND AN SMA ON A VFR FLT PLAN. SMA IN PROX OF APCH RTE.
Narrative: TCASII WORKED GREAT. IT MAY HAVE SAVED THE DAY. GOT TA FOLLOWED BY RA WHILE DSNDING TO PETIS NDB FROM HECTOR VOR ON APCH TO ONT, CA. WE NOTIFIED APCH CTL OF TCASII TFC 1400 FT BELOW. HE SAID TURN R TO 270 DEG HDG WHICH PUT TFC DIRECTLY BELOW US. TCASII ADVISED REDUCE DSCNT AND THEN RA CLB WHICH WE DID (ATC WAS ADVISED OF CLB). SMALL SINGLE ENG ACFT PASSED DIRECTLY BELOW US APPROX 300 FT BELOW. VISIBILITY WAS VERY POOR FOR US LOOKING DIRECTLY INTO SUN AND HVY HAZE. AT ONE POINT THE SMALL ACFT ADVISED HE HAD US IN SIGHT.
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.