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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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During an event, tower local controller concerned with multiple media event small aircraft blimp in close proximity to aircraft conducting visual approachs to sfo airport runways 19. ARTS data tags overlapped with aircraft crossing over sports stadium and others established on final approach course. Reporter wants all flts restr to one final approach course during these events or limits to aircraft circling stadium.
| Attributes | |
| ACN | 389842 |
| Time | |
| Date | 199801 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sfo airport : oak |
| State Reference | CA |
| Altitude | agl bound lower : 2000 agl bound upper : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sfo |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Other |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Route In Use | approach : visual |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller non radar : 3 controller radar : 7 |
| ASRS Report | 389842 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
An event was in progress at 3 communication park. A blimp was orbiting 3 communication at or below 2000 ft. Several banner tows were also orbiting 3 communication park as well as transiting to/from oak and hwd airports (up to 6 banner tows at a time). Sfo was landing runways 19. ILS runway 19L and simultaneous visual approachs runway 19R. The problem was aircraft transiting to/from 3 communication to/from oak or hwd passed under finals and the data blocks blocked my vision of the arrival's data blocks until arrs were inside FAF. Aircraft orbiting 3 communication were consistently in conflict alert so data blocks could not be minimized to allow clear view of arrival's data blocks. Visual approachs to runway 19R were often vectored directly over 3 communication. Data blocks were then unreadable since they all overlapped. Solution: restr arrs to ILS runway 19L approach when heavy traffic is present orbiting 3 communication, or, if simultaneous approachs to runways 19L and 19R are in use, restr traffic at 3 communication to 1 blimp only.
Original NASA ASRS Text
Title: DURING AN EVENT, TWR LCL CTLR CONCERNED WITH MULTIPLE MEDIA EVENT SMA BLIMP IN CLOSE PROX TO ACFT CONDUCTING VISUAL APCHS TO SFO ARPT RWYS 19. ARTS DATA TAGS OVERLAPPED WITH ACFT XING OVER SPORTS STADIUM AND OTHERS ESTABLISHED ON FINAL APCH COURSE. RPTR WANTS ALL FLTS RESTR TO ONE FINAL APCH COURSE DURING THESE EVENTS OR LIMITS TO ACFT CIRCLING STADIUM.
Narrative: AN EVENT WAS IN PROGRESS AT 3 COM PARK. A BLIMP WAS ORBITING 3 COM AT OR BELOW 2000 FT. SEVERAL BANNER TOWS WERE ALSO ORBITING 3 COM PARK AS WELL AS TRANSITING TO/FROM OAK AND HWD ARPTS (UP TO 6 BANNER TOWS AT A TIME). SFO WAS LNDG RWYS 19. ILS RWY 19L AND SIMULTANEOUS VISUAL APCHS RWY 19R. THE PROB WAS ACFT TRANSITING TO/FROM 3 COM TO/FROM OAK OR HWD PASSED UNDER FINALS AND THE DATA BLOCKS BLOCKED MY VISION OF THE ARR'S DATA BLOCKS UNTIL ARRS WERE INSIDE FAF. ACFT ORBITING 3 COM WERE CONSISTENTLY IN CONFLICT ALERT SO DATA BLOCKS COULD NOT BE MINIMIZED TO ALLOW CLR VIEW OF ARR'S DATA BLOCKS. VISUAL APCHS TO RWY 19R WERE OFTEN VECTORED DIRECTLY OVER 3 COM. DATA BLOCKS WERE THEN UNREADABLE SINCE THEY ALL OVERLAPPED. SOLUTION: RESTR ARRS TO ILS RWY 19L APCH WHEN HVY TFC IS PRESENT ORBITING 3 COM, OR, IF SIMULTANEOUS APCHS TO RWYS 19L AND 19R ARE IN USE, RESTR TFC AT 3 COM TO 1 BLIMP ONLY.
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.