ASOS differs from a basic AWOS installation mainly in that ASOS

• A.replaces the need to check NOTAMs
• B.is a voice frequency for pilot reports only
• C.is operated by the National Weather Service and can provide a more complete official weather observation

Why

ASOS stations are operated as part of the national weather observing system and produce official, more complete observations than many AWOS units. Neither system replaces a NOTAM check before flight.

Source: FAA-G-8082-22 Ch. 7 · ACS knowledge area: Radio Communication Procedures · From the Airspace & Flight Restrictions practice bank (AIR-082).

Practice this category as a full test

More ASOS questions

• What are the vertical limits of Class A airspace?
• Under Part 107, how may a remote pilot operate a small unmanned aircraft in Class A airspace?
• Class B airspace generally extends from the surface up to what altitude?
• On a sectional chart, how is Class B airspace depicted?
• A remote pilot wants to fly within Class B airspace at an altitude shown on the UAS Facility Map. What is required before the flight?