Definition
A standardized telecommunications code used to identify a specific type of telephone or data service line, including its electrical characteristics and the type of jack or wiring required. In the FAA context, USOCs appear in documentation related to ordering and maintaining communications circuits that connect facilities such as flight service stations, control towers, and weather data sources.
Plain English
A short code that tells a phone or data company exactly what kind of line, jack, and wiring to install. The FAA uses these codes when ordering the communication lines that link its facilities.
Context Anchor
Seen in FAA acronym lists and occasionally in airport or facility communications paperwork; it is not normally used in cockpit procedures.
Derivation
Uniform means standardized across providers, Service refers to the telecom service being ordered, and Order Code is the catalog identifier used when placing the order. Together it means a standardized catalog code for ordering a telecom service.
Why Pilots Care
A pilot usually does not act on a USOC in flight, but recognizing it helps prevent mistaking an administrative communications code for an aviation procedure or instruction.
Analogy
Like a part number on a hardware order form: the code itself tells the supplier exactly which item, fitting, and connection type to provide.
Intuition Check
USOC does not describe airspace, weather, or a clearance. It identifies a communications-service item on an order or record.
Example Sentence 1
When the technician ordered the new circuit for the flight service station, he referenced the correct USOC so the phone company would install the right type of line.
Example Sentence 2
Each USOC entry helps the FAA route service requests to the correct regional office without delay.