Narrative:

Illegal passage on final. We were flying the FMS bridge runway 28R approach into sfo. Approach advised us of an aircraft being vectored behind us for the visual to runway 28L. At about 1100 ft AGL we got a TCASII RA to descend, we complied. I looked over my shoulder and saw air carrier Y slowly passing us. By then the RA had stopped because we were below 1000 ft. It says in the notes page that widebody transport's and B757's cannot overtake aircraft. Air carrier Y was either vectored too close in or he did not know about this rule. Supplemental information from acn 441404: on arrival in the sfo area we were cleared for the FMS bridge visual runway 28R approach. Air carrier Y was cleared for approach on runway 28L and intercepted the final just behind us. The commercial pages say that large aircraft and B757 aircraft are not to pass aircraft on adjacent finals but air carrier Y did. At about 1.5 mi on final they had closed the distance on us enough that the TCASII issued an RA and continued to issue RA until short final. We continued the approach in VFR conditions and maintaining visual on air carrier Y. After landing, tower was advised of the problem and then ground when we switched to their frequency. We requested a phone number for the tower so we could discuss it with them in person but they were unwilling to give us the number. We asked our operations to get the number but they never did. Finally, the captain was able to get a tower supervisor on the radio and he finally gave us a phone number to talk on. Over the phone, the captain explained the problem and we moved on.

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Original NASA ASRS Text

Title: B757 CREW HAD TCASII RA ON FINAL APCH AT SFO.

Narrative: ILLEGAL PASSAGE ON FINAL. WE WERE FLYING THE FMS BRIDGE RWY 28R APCH INTO SFO. APCH ADVISED US OF AN ACFT BEING VECTORED BEHIND US FOR THE VISUAL TO RWY 28L. AT ABOUT 1100 FT AGL WE GOT A TCASII RA TO DSND, WE COMPLIED. I LOOKED OVER MY SHOULDER AND SAW ACR Y SLOWLY PASSING US. BY THEN THE RA HAD STOPPED BECAUSE WE WERE BELOW 1000 FT. IT SAYS IN THE NOTES PAGE THAT WDB'S AND B757'S CANNOT OVERTAKE ACFT. ACR Y WAS EITHER VECTORED TOO CLOSE IN OR HE DID NOT KNOW ABOUT THIS RULE. SUPPLEMENTAL INFO FROM ACN 441404: ON ARR IN THE SFO AREA WE WERE CLRED FOR THE FMS BRIDGE VISUAL RWY 28R APCH. ACR Y WAS CLRED FOR APCH ON RWY 28L AND INTERCEPTED THE FINAL JUST BEHIND US. THE COMMERCIAL PAGES SAY THAT LARGE ACFT AND B757 ACFT ARE NOT TO PASS ACFT ON ADJACENT FINALS BUT ACR Y DID. AT ABOUT 1.5 MI ON FINAL THEY HAD CLOSED THE DISTANCE ON US ENOUGH THAT THE TCASII ISSUED AN RA AND CONTINUED TO ISSUE RA UNTIL SHORT FINAL. WE CONTINUED THE APCH IN VFR CONDITIONS AND MAINTAINING VISUAL ON ACR Y. AFTER LNDG, TWR WAS ADVISED OF THE PROB AND THEN GND WHEN WE SWITCHED TO THEIR FREQ. WE REQUESTED A PHONE NUMBER FOR THE TWR SO WE COULD DISCUSS IT WITH THEM IN PERSON BUT THEY WERE UNWILLING TO GIVE US THE NUMBER. WE ASKED OUR OPS TO GET THE NUMBER BUT THEY NEVER DID. FINALLY, THE CAPT WAS ABLE TO GET A TWR SUPVR ON THE RADIO AND HE FINALLY GAVE US A PHONE NUMBER TO TALK ON. OVER THE PHONE, THE CAPT EXPLAINED THE PROB AND WE MOVED ON.

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.