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An air carrier B757 flight crew complained that their TCASII gave them an RA when an air carrier B737 on a parallel approach passes them. The reporter does not think that night parallel approachs are very safe at sfo.
| Attributes | |
| ACN | 384532 |
| Time | |
| Date | 199710 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | msl bound lower : 1500 msl bound upper : 1500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sfo |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach landing : go around |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp pilot : commercial |
| Experience | flight time total : 10000 |
| ASRS Report | 384532 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : nmac other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 0 |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
We were on approach to runway 28R at sfo. My first officer was flying. At approximately 1500 ft AGL we got a TCASII RA. I told my first officer to comply and go around. We did and began a slight drift to the left, my first officer may have thought that he saw movement out the right side of the aircraft. Simultaneously I picked up movement out of the corner of my eye on the left side. I saw an air carrier B737 passing us on approach to runway 28L. He was very close. I told my first officer that I had visual contact with the conflict and told him to resume approach. Remainder of flight was normal. Our commercial approach books used to have a page that directed visual approach aircraft on runway 28L to not overtake approach aircraft to runway 28R. That page has been taken out. Wingtip to wingtip approachs to runway 28R/left at sfo are inherently unsafe -- especially at night.
Original NASA ASRS Text
Title: AN ACR B757 FLC COMPLAINED THAT THEIR TCASII GAVE THEM AN RA WHEN AN ACR B737 ON A PARALLEL APCH PASSES THEM. THE RPTR DOES NOT THINK THAT NIGHT PARALLEL APCHS ARE VERY SAFE AT SFO.
Narrative: WE WERE ON APCH TO RWY 28R AT SFO. MY FO WAS FLYING. AT APPROX 1500 FT AGL WE GOT A TCASII RA. I TOLD MY FO TO COMPLY AND GAR. WE DID AND BEGAN A SLIGHT DRIFT TO THE L, MY FO MAY HAVE THOUGHT THAT HE SAW MOVEMENT OUT THE R SIDE OF THE ACFT. SIMULTANEOUSLY I PICKED UP MOVEMENT OUT OF THE CORNER OF MY EYE ON THE L SIDE. I SAW AN ACR B737 PASSING US ON APCH TO RWY 28L. HE WAS VERY CLOSE. I TOLD MY FO THAT I HAD VISUAL CONTACT WITH THE CONFLICT AND TOLD HIM TO RESUME APCH. REMAINDER OF FLT WAS NORMAL. OUR COMMERCIAL APCH BOOKS USED TO HAVE A PAGE THAT DIRECTED VISUAL APCH ACFT ON RWY 28L TO NOT OVERTAKE APCH ACFT TO RWY 28R. THAT PAGE HAS BEEN TAKEN OUT. WINGTIP TO WINGTIP APCHS TO RWY 28R/L AT SFO ARE INHERENTLY UNSAFE -- ESPECIALLY AT NIGHT.
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.