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Sfo tower ground controller reported observing an aircraft taxi in front of another aircraft; when intended to taxi behind it.
| Attributes | |
| ACN | 1526017 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | SFO.Airport |
| State Reference | CA |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Flight Phase | Taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 129 |
| Flight Phase | Taxi |
| Route In Use | None |
| Flight Plan | IFR |
| Person 1 | |
| Function | Ground |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 18 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Ground Conflict Critical |
Narrative:
Aircraft Y was taxiing around the west end to the runway. They were stopped at B on B1. A position relief briefing had just taken place and I remained present for the overlap. There were two aircraft passing B; Q1 onto a to pass in front of aircraft X. Aircraft X was told to hold short of Q1. Then aircraft Y was told to join B1 onto a. They did; right in front of aircraft X. I was shocked; but considered the pilot took the clearance literally. They passed no less than 30 ft in front of aircraft X by my estimation; whose nose was just about at B1 and a taxiway lines. There is no way I would have expected aircraft X to hold where they were with a clearance to hold short of Q1; or aircraft Y to drive right in front of aircraft X holding where they were. The controller should have said to aircraft Y 'join B1 onto a behind the crj'.
Original NASA ASRS Text
Title: SFO Tower Ground Controller reported observing an aircraft taxi in front of another aircraft; when intended to taxi behind it.
Narrative: Aircraft Y was taxiing around the west end to the runway. They were stopped at B on B1. A position relief briefing had just taken place and I remained present for the overlap. There were two aircraft passing B; Q1 onto A to pass in front of Aircraft X. Aircraft X was told to hold short of Q1. Then Aircraft Y was told to join B1 onto A. They did; right in front of Aircraft X. I was shocked; but considered the pilot took the clearance literally. They passed no less than 30 ft in front of Aircraft X by my estimation; whose nose was just about at B1 and A taxiway lines. There is no way I would have expected Aircraft X to hold where they were with a clearance to hold short of Q1; OR Aircraft Y to drive right in front of Aircraft X holding where they were. The controller should have said to Aircraft Y 'join B1 onto A behind the CRJ'.
Data retrieved from NASA's ASRS site 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.