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Sfo local controller issued go around to landing traffic on runway 28L as aircraft was unable to remain behind parallel traffic on runway 28R.
| Attributes | |
| ACN | 631772 |
| Time | |
| Date | 200409 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sfo.airport |
| State Reference | CA |
| Altitude | msl single value : 800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sfo.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | landing : go around |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : sfo.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar pilot : instrument |
| Experience | controller radar : 2 controller supervisory : 12 controller time certified in position1 : 4.75 flight time total : 191 |
| ASRS Report | 631772 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : supervisor |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action flight crew : executed go around |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 200 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Aircraft #1 on approach runway 28L high and fast. Aircraft #2 on approach runway 28R. I advised aircraft #1 not to overtake aircraft #2. 'That's going to be difficult.' I advised aircraft #1 to make s-turns south of final. I told aircraft #2, aircraft #1 was 'behind to your left, 700 ft above you, making s-turns to stay behind you.' aircraft #1 made 1 s-turn and was unable to stay behind. Around 1000-900 ft on final aircraft #1 was sent around. A subsequent phone call to my supervisor, pilot of aircraft #2 was very upset getting a descent RA below 800 ft. Also, the pilot stated he was unaware of what aircraft #1 was doing. I checked with my coordinator, and he agreed with my perception that I clearly communicated what was happening around aircraft #2.
Original NASA ASRS Text
Title: SFO LCL CTLR ISSUED GAR TO LNDG TFC ON RWY 28L AS ACFT WAS UNABLE TO REMAIN BEHIND PARALLEL TFC ON RWY 28R.
Narrative: ACFT #1 ON APCH RWY 28L HIGH AND FAST. ACFT #2 ON APCH RWY 28R. I ADVISED ACFT #1 NOT TO OVERTAKE ACFT #2. 'THAT'S GOING TO BE DIFFICULT.' I ADVISED ACFT #1 TO MAKE S-TURNS S OF FINAL. I TOLD ACFT #2, ACFT #1 WAS 'BEHIND TO YOUR L, 700 FT ABOVE YOU, MAKING S-TURNS TO STAY BEHIND YOU.' ACFT #1 MADE 1 S-TURN AND WAS UNABLE TO STAY BEHIND. AROUND 1000-900 FT ON FINAL ACFT #1 WAS SENT AROUND. A SUBSEQUENT PHONE CALL TO MY SUPVR, PLT OF ACFT #2 WAS VERY UPSET GETTING A DSCNT RA BELOW 800 FT. ALSO, THE PLT STATED HE WAS UNAWARE OF WHAT ACFT #1 WAS DOING. I CHKED WITH MY COORDINATOR, AND HE AGREED WITH MY PERCEPTION THAT I CLRLY COMMUNICATED WHAT WAS HAPPENING AROUND ACFT #2.
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.