Definition
The operations office at a military airfield that coordinates flight activity, handles arriving and departing aircraft, processes flight plans, and provides services and information to pilots using the base. Civilian pilots landing at a joint-use or military field with prior permission typically check in with BASOP on arrival and before departure.
Plain English
The main office at a military airport that runs the day-to-day flying activity and helps pilots coming and going.
Context Anchor
Seen in FAA acronym and notice listings, especially when information involves a military airfield or military aviation facility.
Derivation
A shortened combination of 'base' (the military installation) and 'operations' (the flight activity office). The contraction BASOP is used to keep NOTAMs and charts compact.
Why Pilots Care
If you fly into a military or joint-use field, BASOP is usually your point of contact for permission, parking, fuel, and departure procedures. Skipping that contact can result in denied entry, security issues, or violations.
Intuition Check
Do not read BASOP as the name of a route, runway, or procedure. It refers to the military base operations function at an airfield.
Example Sentence 1
After landing at the joint-use field, the pilot taxied to transient parking and walked over to BASOP to close the flight plan and arrange fuel.
Example Sentence 2
BASOP arranged refueling and parking for the civilian aircraft on a cross-country stop.