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TWG: Santana departures split into day/night; day likely ATC work-plan, night may fit Fly Quiet
Summary
Members concluded Santana departures should be treated separately for day and night: daytime operations are driven by high traffic volumes (ATC control) and not a Fly Quiet element, while nighttime Santana activity may be suitable for noise-abatement or Fly Quiet scoring subject to monitoring.
The group separated the Santana departure into daytime and nighttime elements because traffic volumes and ATC behavior differ by time of day. A technical member said daytime Santana "is ATC" and that there is "no noise abatement during the day, really," while nighttime operations include an established noise-abatement procedure that the group should examine for drift and compliance.
TWG members agreed daytime Santana likely does not belong to the Fly Quiet program because ATC control and high volumes limit pilot/airline influence. Nighttime Santana, however, may be included as a Fly Quiet or NAP element with monitoring and possible ATC coordination to reduce drift and earlier turns.
The group recommended documenting the distinction and including a night-specific NAP/fly-quiet element in the package for Roundtable consideration.
