Definition
An FAA Advisory Circular titled 'Pilots' Role in Collision Avoidance' that provides guidance on visual scanning techniques, see-and-avoid responsibilities, and procedures for reducing the risk of mid-air collisions. It is a non-regulatory document, but it represents the FAA's recommended best practices on the subject.
Plain English
An FAA guidance document that explains how pilots should look out for other aircraft and avoid running into them. It is advice, not a rule, but it reflects the way the FAA expects pilots to handle the job of seeing and avoiding traffic.
Context Anchor
You will see Advisory Circular 90-48 referenced in training material about see-and-avoid practices, traffic awareness, and collision prevention.
Derivation
An 'Advisory Circular' is exactly what it sounds like — a circulated document offering advice. The number 90-48 is simply the FAA's filing reference: the '90' series covers air traffic and general operating rules, and '48' is the specific document number within that series.
Why Pilots Care
It clarifies a pilot's legal and practical duty to scan for traffic, directly supporting safe operations in visual conditions.
Intuition Check
Do not assume “advisory” means “not important.” Here it means the document is guidance rather than a regulation by itself, but the safety practices it describes are still important for real flying.
Example Sentence 1
The instructor based the lesson on visual scanning techniques directly on the procedures described in Advisory Circular 90-48.
Example Sentence 2
Instructors often cite Advisory Circular 90-48 when explaining right-of-way rules during cross-country training.