AvnFPS and CACAvnFPS and CAC

Avoid the Green Light syndrome!!!

Role of NWS TAFsRole of NWS TAFs

Used forUsed for planning purposesplanning purposes by by airline dispatchers, air traffic airline dispatchers, air traffic managers, and GA pilotsmanagers, and GA pilots Should define Should define operational impactsoperational impacts

Categorical values needed by customers Categorical values needed by customers to determine arrival and departure to determine arrival and departure proceduresprocedures

Should focus on the 2 to 6 hour Should focus on the 2 to 6 hour time frametime frame

Provides our customers with a more Provides our customers with a more responsiveresponsive product tailored to their product tailored to their regulatory needsregulatory needs

Allows forecasters to use AvnFPS as a Allows forecasters to use AvnFPS as a Decision ToolDecision Tool rather than an alert rather than an alert monitormonitor

Categorical Amendment Criteria

Categorical Amendment Categorical Amendment CriteriaCriteria

Employs the following important Employs the following important concepts:concepts: Tailors Ceiling and Visibility to meet Tailors Ceiling and Visibility to meet

specific specific airport requirementsairport requirements Groups Ceiling and Visibility together Groups Ceiling and Visibility together

into into categoriescategories to match FAA to match FAA RegulationsRegulations

TEMPO groups checked immediately TEMPO groups checked immediately against METARS to notify forecasters of against METARS to notify forecasters of resulting customer impactsresulting customer impacts

Categorical Amendment Categorical Amendment CriteriaCriteria

Categorical Amendment Criteria:Categorical Amendment Criteria: TheThe lowest element lowest element of ceiling or of ceiling or

visibility is considered “controlling” for visibility is considered “controlling” for AMD purposesAMD purposes

Standard Amendment Criteria:Standard Amendment Criteria: Prompts for an AMD based on ceiling Prompts for an AMD based on ceiling

OROR visibilityvisibility

Light GreenLight Green

PVD CAT B (Alternate Min): 800 ft and 2SM

YellowYellow

All CAT E (Fuel Alternate): 2000 ft and 3SM

PurplePurple

ORH CAT A (Airfield Min): 200 ft and 1/2SM