 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier widebody transport alleges poor ATC by sfo tower when running multiple runway operation and visual approachs to runways 28R and left.
| Attributes | |
| ACN | 93189 |
| Time | |
| Date | 198808 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 1000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach landing other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | descent : approach landing other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 17000 flight time type : 1300 |
| ASRS Report | 93189 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
On approach to sfo via tipp toe/quiet bridge approach. While south of the san mateo bridge was slowed by approach to 160 KTS in order to allow an small transport to get in front of us. The small transport to land runway 28L and our widebody transport X to land runway 28R. The small transport was in front of us (approximately 11:30 position). We slowed to 143 KTS to maintain spacing and lose altitude. We were high on G/south xchking small transport, ILS and visual runway references about 1000' AGL when tower cleared a widebody transport Y for takeoff on runway 28L. The small transport slowed and we went to 50 degree flaps, 138 KTS, and managed to keep small transport in front of us by a much narrower margin as we crossed runway threshold (approximately 9-9:30 position). When 2 aircraft are flying visual parallel approachs the tower should treat the situation as a formation flight, the reason being whatever the tower does to the lead aircraft impacts the following aircraft. Had we made a published missed approach it would have subjected the small transport to our widebody transport X wake turbulence. The company and association is in contact with the tower chief. The tower chief is to pull tower tapes and brief the individual who cleared the widebody transport Y in front of the small transport.
Original NASA ASRS Text
Title: ACR WDB ALLEGES POOR ATC BY SFO TWR WHEN RUNNING MULTIPLE RWY OPERATION AND VISUAL APCHS TO RWYS 28R AND L.
Narrative: ON APCH TO SFO VIA TIPP TOE/QUIET BRIDGE APCH. WHILE S OF THE SAN MATEO BRIDGE WAS SLOWED BY APCH TO 160 KTS IN ORDER TO ALLOW AN SMT TO GET IN FRONT OF US. THE SMT TO LAND RWY 28L AND OUR WDB X TO LAND RWY 28R. THE SMT WAS IN FRONT OF US (APPROX 11:30 POS). WE SLOWED TO 143 KTS TO MAINTAIN SPACING AND LOSE ALT. WE WERE HIGH ON G/S XCHKING SMT, ILS AND VISUAL RWY REFERENCES ABOUT 1000' AGL WHEN TWR CLRED A WDB Y FOR TKOF ON RWY 28L. THE SMT SLOWED AND WE WENT TO 50 DEG FLAPS, 138 KTS, AND MANAGED TO KEEP SMT IN FRONT OF US BY A MUCH NARROWER MARGIN AS WE CROSSED RWY THRESHOLD (APPROX 9-9:30 POS). WHEN 2 ACFT ARE FLYING VISUAL PARALLEL APCHS THE TWR SHOULD TREAT THE SITUATION AS A FORMATION FLT, THE REASON BEING WHATEVER THE TWR DOES TO THE LEAD ACFT IMPACTS THE FOLLOWING ACFT. HAD WE MADE A PUBLISHED MISSED APCH IT WOULD HAVE SUBJECTED THE SMT TO OUR WDB X WAKE TURB. THE COMPANY AND ASSOCIATION IS IN CONTACT WITH THE TWR CHIEF. THE TWR CHIEF IS TO PULL TWR TAPES AND BRIEF THE INDIVIDUAL WHO CLRED THE WDB Y IN FRONT OF THE SMT.
Data retrieved from NASA's ASRS site as of August 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.