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B757 flight crew approaching las runway 25L 5 miles in trail of a preceding B757 reports encountering wake turbulence and going around.
| Attributes | |
| ACN | 927865 |
| Time | |
| Date | 201101 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | LAS.Airport |
| State Reference | NV |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 65 Flight Crew Total 8100 Flight Crew Type 2400 |
| Person 2 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 22000 Flight Crew Type 5000 |
| Events | |
| Anomaly | Inflight Event / Encounter Wake Vortex Encounter |
Narrative:
In night; VFR conditions at 7;000 MSL on approach to las runway 25L; ATC asked if we had preceding B757 in sight. We advised that we did and were cleared for the visual to 25L. Slowing and descending from 7;000 to 5;500 and despite adequate separation; we encountered strong wake turbulence that caused the airplane to roll to between 10-20 degrees of bank. The captain quickly disengaged the autoflight system and regained control of the airplane by climbing us out of the preceding airplane's flight path which resulted in now being high on glidepath. After bringing my eyes inside to help confirm and coordinate airspeeds and systems; I subsequently lost visual contact with the other B757 in the lights of the city. Approach was advised that we required maneuvering space behind and that we lost the plane in the city lights. Approach control canceled our visual clearance; then climbed us to 7;000 and vectored us for an uneventful visual landing on runway 1L.
Original NASA ASRS Text
Title: B757 flight crew approaching LAS Runway 25L 5 miles in trail of a preceding B757 reports encountering wake turbulence and going around.
Narrative: In night; VFR conditions at 7;000 MSL on approach to LAS Runway 25L; ATC asked if we had preceding B757 in sight. We advised that we did and were cleared for the visual to 25L. Slowing and descending from 7;000 to 5;500 and despite adequate separation; we encountered strong wake turbulence that caused the airplane to roll to between 10-20 degrees of bank. The Captain quickly disengaged the autoflight system and regained control of the airplane by climbing us out of the preceding airplane's flight path which resulted in now being high on glidepath. After bringing my eyes inside to help confirm and coordinate airspeeds and systems; I subsequently lost visual contact with the other B757 in the lights of the city. Approach was advised that we required maneuvering space behind and that we lost the plane in the city lights. Approach Control canceled our visual clearance; then climbed us to 7;000 and vectored us for an uneventful visual landing on Runway 1L.
Data retrieved from NASA's ASRS site as of April 2012 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.