This definition appears very rarely
See other definitions of LAAS
Samples in periodicals archive:
Low-altitude airway structure | Article about low-altitude airway structure by The Free Dictionary
Low altitude airway structure - Topic:Aviation - Online Encyclopedia - What is what? Everything you always wanted to know
Low Altitude Airway Structure according to the free Transportation Dictionary. The network of airways serving aircraft operations up to but not including 18,000 feet...
Alameda, CA - The Low Altitude Airway Structure Threatens My Satellite Dish