<< >> NASA ASRS Report 1062192, January 2013

Md-11 captain reported that ATC procedures on mem arrivals are causing avoidable wake vortex encounters.

Attributes
ACN	1062192
Time
Date	201301
Local Time Of Day	0001-0600
Place
Locale Reference	MEM.Airport
State Reference	TN
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	Initial Approach
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter Wake Vortex Encounter Inflight Event / Encounter Weather / Turbulence

Narrative:

The recat wake turbulence spacing caused us to encounter the wake turbulence from the previous aircraft. Further tower was telling every aircraft to use minimum time on the runway because of other aircraft on very close approaches. This is eroding safety both in flight during approach and while decelerating and vacating the runway. Don't space us so close when we have tailwinds on final. The tailwind is holding the vortices of the previous aircraft right on the glide path causing a greater opportunity to cause encounters when aircraft are slow and close to the ground.

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Original NASA ASRS Text

Title: MD-11 Captain reported that ATC procedures on MEM arrivals are causing avoidable wake vortex encounters.

Narrative: The RECAT wake turbulence spacing caused us to encounter the wake turbulence from the previous aircraft. Further Tower was telling every aircraft to use minimum time on the runway because of other aircraft on very close approaches. This is eroding safety both in flight during approach and while decelerating and vacating the runway. Don't space us so close when we have tailwinds on final. The tailwind is holding the vortices of the previous aircraft right on the glide path causing a greater opportunity to cause encounters when aircraft are slow and close to the ground.

Data retrieved from NASA's ASRS site as of July 2013 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.