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Near midair collision between a learjet LR60 on a 4 mi final just breaking out of the undercast and a C172 crossing through the final approach course. The cessna was instructed to remain clear of the approach course, but did not turn away as requested by ATC controller.
| Attributes | |
| ACN | 419666 |
| Time | |
| Date | 199811 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sjc airport : sjc |
| State Reference | CA |
| Altitude | msl bound lower : 1200 msl bound upper : 1700 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sjc |
| Operator | general aviation : corporate |
| Make Model Name | Learjet 60 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar controller : radar |
| Experience | controller non radar : 2 controller radar : 3 |
| ASRS Report | 419666 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 3650 flight time type : 400 |
| ASRS Report | 419900 |
| Events | |
| Anomaly | conflict : nmac non adherence : far non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 100 vertical : 100 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Small aircraft Y, the cessna, was told about the learjet on final and to remain away from the finals. Small aircraft Y was about 1 mi north of the finals on a converging course with the learjet. Again, small aircraft Y was instructed to turn right. Small aircraft Y did not comply and continued south towards the learjet. Again, small aircraft Y was told to turn right 180 degrees to make a 180 degree turn to the right. Small aircraft Y continued on course and did not turn, crossing in front of the learjet on final. The clouds to the north and east were about 1200-1500 ft and I believe the cessna small aircraft Y was in the clouds and was not maintaining VFR flight. The pilot of small aircraft Y continually refused to follow instructions.
Original NASA ASRS Text
Title: NMAC BTWN A LEARJET LR60 ON A 4 MI FINAL JUST BREAKING OUT OF THE UNDERCAST AND A C172 XING THROUGH THE FINAL APCH COURSE. THE CESSNA WAS INSTRUCTED TO REMAIN CLR OF THE APCH COURSE, BUT DID NOT TURN AWAY AS REQUESTED BY ATC CTLR.
Narrative: SMA Y, THE CESSNA, WAS TOLD ABOUT THE LEARJET ON FINAL AND TO REMAIN AWAY FROM THE FINALS. SMA Y WAS ABOUT 1 MI N OF THE FINALS ON A CONVERGING COURSE WITH THE LEARJET. AGAIN, SMA Y WAS INSTRUCTED TO TURN R. SMA Y DID NOT COMPLY AND CONTINUED S TOWARDS THE LEARJET. AGAIN, SMA Y WAS TOLD TO TURN R 180 DEGS TO MAKE A 180 DEG TURN TO THE R. SMA Y CONTINUED ON COURSE AND DID NOT TURN, XING IN FRONT OF THE LEARJET ON FINAL. THE CLOUDS TO THE N AND E WERE ABOUT 1200-1500 FT AND I BELIEVE THE CESSNA SMA Y WAS IN THE CLOUDS AND WAS NOT MAINTAINING VFR FLT. THE PLT OF SMA Y CONTINUALLY REFUSED TO FOLLOW INSTRUCTIONS.
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.