"An Air Traffic Oversight Service investigation has
determined that the Air Traffic Organization (ATO) is not in
compliance with FAA Order 7110.65, Paragraph 3-10-4, at Memphis Air
Traffic Control Tower (MEM). MEM was also unable to provide
required documentation to demonstrate that the current practice of
conducting simultaneous independent approaches to runways 18L, 18C
and 27 was properly authorized."
Source: From an internal FAA memo, published on
a blog run by past NATCA president John Carr, on safety concerns at
Memphis International Airport.