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B757 crew called sfo tower on the phone to complain about being overtaken by a B747 while on short final.
| Attributes | |
| ACN | 563820 |
| Time | |
| Date | 200210 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sfo.airport |
| State Reference | CA |
| Altitude | agl single value : 300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : sfo.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 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 |
| Aircraft 2 | |
| Controlling Facilities | tower : sfo.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller limited radar : 7 controller time certified in position1 : 2.25 |
| ASRS Report | 563820 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 15000 flight time type : 8000 |
| ASRS Report | 564214 |
| Events | |
| Anomaly | non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : twr radar other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
B757 on visual approach to runway 28R. When checked on frequency, I asked him to slow so I could get a departure out between him and the previous arrs. B747 on visual approach to runway 28L with about a 30 KT overtake and 1 1/2 - 2 mi behind the B757. When he checked on, I slowed the B747 so as to not overtake the B757. The situation was normal, and I did not observe the B747 overtake the B757 on final. When 2 aircraft are so close together (750 ft centerline to centerline), it is very difficult to tell which aircraft is ahead or behind. They appeared to be side-by-side when I last checked the situation at the threshold of the runway. The pilot of the B757 called to complain of an overtake on final at 300 ft AGL by the B747. Supplemental information from acn 564214: while flying the FMS bridge visual to runway 28R at sfo, a B747 violated local procedures and overtook my aircraft while flying a visual approach to runway 28L. B757 was not spaced properly by approach/sfo tower. B747's final approach speed was 20-40 KTS faster than ours (125 KTS). Our commercial chart pages state in part that a heavy/B757 will not be authority/authorized to overtake another aircraft landing on a parallel runway. Bay approach and sfo tower need to be better coordinated when directing aircraft of dissimilar airspds during parallel approachs.
Original NASA ASRS Text
Title: B757 CREW CALLED SFO TWR ON THE PHONE TO COMPLAIN ABOUT BEING OVERTAKEN BY A B747 WHILE ON SHORT FINAL.
Narrative: B757 ON VISUAL APCH TO RWY 28R. WHEN CHKED ON FREQ, I ASKED HIM TO SLOW SO I COULD GET A DEP OUT BTWN HIM AND THE PREVIOUS ARRS. B747 ON VISUAL APCH TO RWY 28L WITH ABOUT A 30 KT OVERTAKE AND 1 1/2 - 2 MI BEHIND THE B757. WHEN HE CHKED ON, I SLOWED THE B747 SO AS TO NOT OVERTAKE THE B757. THE SIT WAS NORMAL, AND I DID NOT OBSERVE THE B747 OVERTAKE THE B757 ON FINAL. WHEN 2 ACFT ARE SO CLOSE TOGETHER (750 FT CTRLINE TO CTRLINE), IT IS VERY DIFFICULT TO TELL WHICH ACFT IS AHEAD OR BEHIND. THEY APPEARED TO BE SIDE-BY-SIDE WHEN I LAST CHKED THE SIT AT THE THRESHOLD OF THE RWY. THE PLT OF THE B757 CALLED TO COMPLAIN OF AN OVERTAKE ON FINAL AT 300 FT AGL BY THE B747. SUPPLEMENTAL INFO FROM ACN 564214: WHILE FLYING THE FMS BRIDGE VISUAL TO RWY 28R AT SFO, A B747 VIOLATED LCL PROCS AND OVERTOOK MY ACFT WHILE FLYING A VISUAL APCH TO RWY 28L. B757 WAS NOT SPACED PROPERLY BY APCH/SFO TWR. B747'S FINAL APCH SPD WAS 20-40 KTS FASTER THAN OURS (125 KTS). OUR COMMERCIAL CHART PAGES STATE IN PART THAT A HVY/B757 WILL NOT BE AUTH TO OVERTAKE ANOTHER ACFT LNDG ON A PARALLEL RWY. BAY APCH AND SFO TWR NEED TO BE BETTER COORDINATED WHEN DIRECTING ACFT OF DISSIMILAR AIRSPDS DURING PARALLEL APCHS.
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.