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Pilot/Controller Glossary 

12/2/21 

loitering in the vicinity of sensitive locations, (e.g., 
national security, law enforcement facilities, and 
critical infrastructure), or disrupting normal air traffic 
operations resulting in runway changes, ground 
stops, pilot evasive action, etc. The report of a UAS 
operation alone does not constitute suspicious 
activity. Development of a comprehensive list of 
suspicious activities is not possible due to the vast 
number of situations that could be considered 
suspicious. ATC must exercise sound judgment when 
identifying situations that could constitute or indicate 
a suspicious activity. 

SWAP

 

(See SEVERE WEATHER AVOIDANCE PLAN.) 

SWSL

 

(See SUPPLEMENTAL WEATHER SERVICE 

LOCATION.) 

SYSTEM STRATEGIC NAVIGATION

 Military 

activity accomplished by navigating along a 
preplanned route using internal aircraft systems to 
maintain a desired track. This activity normally 
requires a lateral route width of 10 NM and altitude 
range of 1,000 feet to 6,000 feet AGL with some route 
segments that permit terrain following. 

PCG S

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