Definition
An air traffic control service that allows IFR aircraft to fly between two terminal areas using only approach control facilities, without entering the en route (Center) environment. Tower En Route Control (TEC) routes are published, typically used for relatively short flights at lower altitudes, and handled entirely by a sequence of TRACONs.
Plain English
A way to fly an instrument flight plan from one airport to another by being handed off between approach controllers the whole way, instead of being passed up to the higher-level controllers who normally handle longer cross-country flights.
Context Anchor
Seen during IFR route planning and in clearances for short flights between airports in busy metropolitan areas.
Derivation
The name describes the service literally: control during the en route portion of the flight is provided by towers (approach control facilities) rather than by Air Route Traffic Control Centers. 'En route' comes from French, meaning 'on the way.'
Why Pilots Care
Allows more direct and efficient routing for short flights, reducing workload and fuel use while maintaining safety.
Intuition Check
Do not read “tower” as only the controller in the airport tower handling takeoff and landing. In this term, it means a coordinated ATC system using tower and approach facilities to manage an IFR flight between airports.
Example Sentence 1
For the short hop from Long Beach to San Diego, she filed a TEC route and stayed with approach controllers the entire flight.
Example Sentence 2
Under Tower En Route Control, the aircraft received radar vectors directly from one airport's approach control to the next without a handoff to Center.