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Near midair collision between a descending B767-400 and a crossing C172 at 11500 ft 2 NM northwest of kaddy intersection, nv.
| Attributes | |
| ACN | 621045 |
| Time | |
| Date | 200406 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : kaddy |
| State Reference | NV |
| Altitude | msl bound lower : 11500 msl bound upper : 11850 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : l30.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B767-400 and 400 ER |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Route In Use | arrival star : tyssn |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : l30.tracon |
| Make Model Name | Cessna Aircraft Undifferentiated or Other Model |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 21200 flight time type : 3600 |
| ASRS Report | 621045 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : nmac non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to original clearance |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 350 |
| Supplementary | |
| Problem Areas | Aircraft ATC Human Performance Airspace Structure Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On approach to las flying the tyssn arrival, we were cleared after kaddy 250 KTS/12000 ft direct to prino, cross at 8000 ft. Shortly after leaving kaddy and departing 12000 ft, first officer announced 'there is a cessna.' I looked and directly in front of us moving right to left in a southerly direction at approximately 11500 ft was a C172. I estimated the range at 1/2 mi with rapid closure rate at a perpendicular angle. He was not on TCASII and there was no TA or RA. As a collision appeared eminent, I immediately initiated a climb and passed directly overhead the aircraft at approximately 200-500 ft. The first officer observed the pilots below us as they looked up. I queried approach control if they were working this aircraft and they said no, but were now picking up an intermittent primary target. After landing, I phoned TRACON and spoke with controller who said they were trying to track the aircraft.
Original NASA ASRS Text
Title: NMAC BTWN A DSNDING B767-400 AND A XING C172 AT 11500 FT 2 NM NW OF KADDY INTXN, NV.
Narrative: ON APCH TO LAS FLYING THE TYSSN ARR, WE WERE CLRED AFTER KADDY 250 KTS/12000 FT DIRECT TO PRINO, CROSS AT 8000 FT. SHORTLY AFTER LEAVING KADDY AND DEPARTING 12000 FT, FO ANNOUNCED 'THERE IS A CESSNA.' I LOOKED AND DIRECTLY IN FRONT OF US MOVING R TO L IN A SOUTHERLY DIRECTION AT APPROX 11500 FT WAS A C172. I ESTIMATED THE RANGE AT 1/2 MI WITH RAPID CLOSURE RATE AT A PERPENDICULAR ANGLE. HE WAS NOT ON TCASII AND THERE WAS NO TA OR RA. AS A COLLISION APPEARED EMINENT, I IMMEDIATELY INITIATED A CLB AND PASSED DIRECTLY OVERHEAD THE ACFT AT APPROX 200-500 FT. THE FO OBSERVED THE PLTS BELOW US AS THEY LOOKED UP. I QUERIED APCH CTL IF THEY WERE WORKING THIS ACFT AND THEY SAID NO, BUT WERE NOW PICKING UP AN INTERMITTENT PRIMARY TARGET. AFTER LNDG, I PHONED TRACON AND SPOKE WITH CTLR WHO SAID THEY WERE TRYING TO TRACK 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.