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Sna ground controller observed what he or she viewed as questionable procedures when the local controller utilized anticipated separation between landing and departure aircraft.
| Attributes | |
| ACN | 633752 |
| Time | |
| Date | 200410 |
| Day | Tue |
| Place | |
| Locale Reference | airport : sna.airport |
| State Reference | CA |
| Altitude | agl single value : 0 |
| Environment | |
| Weather Elements | Fog |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : roll |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : sna.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : ground |
| Experience | controller non radar : 16 |
| ASRS Report | 633752 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Events | |
| Anomaly | conflict : ground less severe non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Miss Distance | horizontal : 5400 |
| Supplementary | |
| Problem Areas | ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
Narrative:
I was working ground control on the evening shift. Air carrier X had just landed on runway 19R and turned left at taxiway east to exit the runway. Anticipating air carrier X would clear the runway, the local controller cleared the next aircraft, air carrier Y for takeoff on the same runway. However, the air carrier X jet stated to the local controller that the were still on the runway. The local controller then cancelled the air carrier Y jet's takeoff. The local controller stated that she anticipated the runway would be clear and stated that it was dark and she could not clearly see. To prevent this situation in the future, the local controller needs to be sure separation exists. Take the extra few seconds to visually scan the runway and movement areas, especially at night with restr visibility. Use the tools available. The binoculars could have been very helpful in this situation.
Original NASA ASRS Text
Title: SNA GND CTLR OBSERVED WHAT HE OR SHE VIEWED AS QUESTIONABLE PROCS WHEN THE LCL CTLR UTILIZED ANTICIPATED SEPARATION BTWN LNDG AND DEP ACFT.
Narrative: I WAS WORKING GND CTL ON THE EVENING SHIFT. ACR X HAD JUST LANDED ON RWY 19R AND TURNED L AT TXWY E TO EXIT THE RWY. ANTICIPATING ACR X WOULD CLR THE RWY, THE LCL CTLR CLRED THE NEXT ACFT, ACR Y FOR TKOF ON THE SAME RWY. HOWEVER, THE ACR X JET STATED TO THE LCL CTLR THAT THE WERE STILL ON THE RWY. THE LCL CTLR THEN CANCELLED THE ACR Y JET'S TKOF. THE LCL CTLR STATED THAT SHE ANTICIPATED THE RWY WOULD BE CLR AND STATED THAT IT WAS DARK AND SHE COULD NOT CLRLY SEE. TO PREVENT THIS SIT IN THE FUTURE, THE LCL CTLR NEEDS TO BE SURE SEPARATION EXISTS. TAKE THE EXTRA FEW SECONDS TO VISUALLY SCAN THE RWY AND MOVEMENT AREAS, ESPECIALLY AT NIGHT WITH RESTR VISIBILITY. USE THE TOOLS AVAILABLE. THE BINOCULARS COULD HAVE BEEN VERY HELPFUL IN THIS SIT.
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.