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A B757 captain reported that A80 vectored him too close in trail behind an MD11, causing him to encounter wake turbulence on the approach to atl.
| Attributes | |
| ACN | 629844 |
| Time | |
| Date | 200409 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : atl.airport |
| State Reference | GA |
| Altitude | msl bound lower : 3000 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | Mixed |
| Weather Elements | other |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : a80.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 9r other |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : a80.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 9r |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 80 flight time total : 14000 flight time type : 2000 |
| ASRS Report | 629844 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | inflight encounter : wake turbulence non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Situations | |
| Airport | procedure or policy : atl.airport |
Narrative:
Atl approach descended us down to 3000 ft from 3500 ft MSL to try to pick up preceding traffic visually, to probably close up spacing (from 5 NM). With winds on the nose at 11 KTS, this put us in the MD11's wake turbulence. First encounter required disengagement of autoplt. Reported same to ATC. Encountered more wake turbulence requiring aileron input to overcome uncommanded rolls 2-3 more times. Plane was also jostled, prompting comments from 1-2 passenger and flight attendants. Atl's cavalier attitude about wake turbulence, to cram as many arrs into atl as they can, will result in an incident, if not an accident, as traffic increases.
Original NASA ASRS Text
Title: A B757 CAPT RPTED THAT A80 VECTORED HIM TOO CLOSE IN TRAIL BEHIND AN MD11, CAUSING HIM TO ENCOUNTER WAKE TURB ON THE APCH TO ATL.
Narrative: ATL APCH DSNDED US DOWN TO 3000 FT FROM 3500 FT MSL TO TRY TO PICK UP PRECEDING TFC VISUALLY, TO PROBABLY CLOSE UP SPACING (FROM 5 NM). WITH WINDS ON THE NOSE AT 11 KTS, THIS PUT US IN THE MD11'S WAKE TURB. FIRST ENCOUNTER REQUIRED DISENGAGEMENT OF AUTOPLT. RPTED SAME TO ATC. ENCOUNTERED MORE WAKE TURB REQUIRING AILERON INPUT TO OVERCOME UNCOMMANDED ROLLS 2-3 MORE TIMES. PLANE WAS ALSO JOSTLED, PROMPTING COMMENTS FROM 1-2 PAX AND FLT ATTENDANTS. ATL'S CAVALIER ATTITUDE ABOUT WAKE TURB, TO CRAM AS MANY ARRS INTO ATL AS THEY CAN, WILL RESULT IN AN INCIDENT, IF NOT AN ACCIDENT, AS TFC INCREASES.
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.