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B737 first officer claims bay and lax approach controls vector non heavy aircraft one to two miles behind heavy jet and B757 aircraft.
| Attributes | |
| ACN | 545359 |
| Time | |
| Date | 200204 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sfo.airport |
| State Reference | CA |
| Altitude | msl single value : 5000 |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : iad.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : o90.tracon |
| Make Model Name | B757 Undifferentiated or Other Model |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 6000 flight time type : 2584 |
| ASRS Report | 545359 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
On approach to sfo, ATC vectored us close in trail of a 757 (1-2 miles) for approach to runway 28L, the 757 was for runway 28R. Not having adequate wake turbulence separation we declined the approach and were vectored for another. This is at least the 4TH time in the last 2 weeks that ATC (2 sfo, 2 lax) had not given adequate separation behind 757 or bigger aircraft. They are always surprised we will not fly 1 mile in trail of a 747 etc. This is a serious safety concern for the 737. I write this to bring attention to the danger and prevent further wake turbulence accidents!
Original NASA ASRS Text
Title: B737 FO CLAIMS BAY AND LAX APCH CTLS VECTOR NON HEAVY ACFT ONE TO TWO MILES BEHIND HEAVY JET AND B757 ACFT.
Narrative: ON APCH TO SFO, ATC VECTORED US CLOSE IN TRAIL OF A 757 (1-2 MILES) FOR APCH TO RWY 28L, THE 757 WAS FOR RWY 28R. NOT HAVING ADEQUATE WAKE TURB SEPARATION WE DECLINED THE APCH AND WERE VECTORED FOR ANOTHER. THIS IS AT LEAST THE 4TH TIME IN THE LAST 2 WEEKS THAT ATC (2 SFO, 2 LAX) HAD NOT GIVEN ADEQUATE SEPARATION BEHIND 757 OR BIGGER ACFT. THEY ARE ALWAYS SURPRISED WE WILL NOT FLY 1 MILE IN TRAIL OF A 747 ETC. THIS IS A SERIOUS SAFETY CONCERN FOR THE 737. I WRITE THIS TO BRING ATTENTION TO THE DANGER AND PREVENT FURTHER WAKE TURB ACCIDENTS!
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.