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Sjc local controller described near midair collision when small aircraft aircraft; assigned runway 29; but turned final for 30L behind air carrier; traffic was issued to both aircraft.
| Attributes | |
| ACN | 790315 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sjc.airport |
| State Reference | CA |
| Aircraft 1 | |
| Controlling Facilities | tower : sjc.tower tower : sjc.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : sjc.tower |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| ASRS Report | 790315 |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued advisory controller : issued new clearance controller : issued alert |
| Miss Distance | horizontal : 100 vertical : 0 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
B737 landing runway 30L and BE35 landing runway 29. Both aircraft were advised of each other and each aircraft acknowledged the correct runway assignment when cleared to land. The BE35 turned final right behind the B737 and lined up to land runway 30L. I immediately advised the BE35 he was lined up on the wrong runway and the BE35 corrected and landed runway 29. From the tower it looked as though these 2 aircraft were going to hit and I can only imagine the wake turbulence the BE35 encountered. This was as close as I have seen in a very long time.
Original NASA ASRS Text
Title: SJC LCL CTLR DESCRIBED NMAC WHEN SMA ACFT; ASSIGNED RWY 29; BUT TURNED FINAL FOR 30L BEHIND ACR; TFC WAS ISSUED TO BOTH ACFT.
Narrative: B737 LNDG RWY 30L AND BE35 LNDG RWY 29. BOTH ACFT WERE ADVISED OF EACH OTHER AND EACH ACFT ACKNOWLEDGED THE CORRECT RWY ASSIGNMENT WHEN CLRED TO LAND. THE BE35 TURNED FINAL RIGHT BEHIND THE B737 AND LINED UP TO LAND RWY 30L. I IMMEDIATELY ADVISED THE BE35 HE WAS LINED UP ON THE WRONG RWY AND THE BE35 CORRECTED AND LANDED RWY 29. FROM THE TWR IT LOOKED AS THOUGH THESE 2 ACFT WERE GOING TO HIT AND I CAN ONLY IMAGINE THE WAKE TURB THE BE35 ENCOUNTERED. THIS WAS AS CLOSE AS I HAVE SEEN IN A VERY LONG TIME.
Data retrieved from NASA's ASRS site as of May 2009 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.