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Multiple runway operation parallel runways. Air carrier X had possible less than standard separation from widebody transport wake turbulence. Possible system error.
| Attributes | |
| ACN | 245267 |
| Time | |
| Date | 199306 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : sfo |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oak tower : las |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 800 |
| ASRS Report | 245267 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 24000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X was vectored to 4 mi behind a widebody transport on runway 28R. The controller then tried to give us the visual approach to runway 28L. I told her we could not accept wake turbulence separation responsibility. She stated 'he's for runway 28R, you're for runway 28L.' it was obvious that the controller was unaware of the separation requirements in 7110.65 5-72(B). She then suggested that we 'speed up and pass' the heavy. I told her no. We slowed the aircraft and we flew above the glide path landing outside of the touchdown area to avoid the widebody transport wake. This occurs frequently at sfo and den.
Original NASA ASRS Text
Title: MULTIPLE RWY OP PARALLEL RWYS. ACR X HAD POSSIBLE LTSS FROM WDB WAKE TURB. POSSIBLE SYS ERROR.
Narrative: ACR X WAS VECTORED TO 4 MI BEHIND A WDB ON RWY 28R. THE CTLR THEN TRIED TO GIVE US THE VISUAL APCH TO RWY 28L. I TOLD HER WE COULD NOT ACCEPT WAKE TURB SEPARATION RESPONSIBILITY. SHE STATED 'HE'S FOR RWY 28R, YOU'RE FOR RWY 28L.' IT WAS OBVIOUS THAT THE CTLR WAS UNAWARE OF THE SEPARATION REQUIREMENTS IN 7110.65 5-72(B). SHE THEN SUGGESTED THAT WE 'SPD UP AND PASS' THE HVY. I TOLD HER NO. WE SLOWED THE ACFT AND WE FLEW ABOVE THE GLIDE PATH LNDG OUTSIDE OF THE TOUCHDOWN AREA TO AVOID THE WDB WAKE. THIS OCCURS FREQUENTLY AT SFO AND DEN.
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.