Definition
RMLT (RML terminal) is the equipment at a navigation or communication facility that connects to the FAA's Remote Maintenance Logging (RML) system. It collects status, performance, and fault data from the facility and transmits that information back to a central monitoring location so technicians can track the health of the equipment without having to be physically on site.
Plain English
It's the on-site box at a navaid or radio site that automatically reports how the equipment is doing back to FAA maintenance staff somewhere else.
Context Anchor
Seen in FAA acronym and NOTAM contraction lists, and sometimes in notices about ground equipment or facility status.
Derivation
RML stands for Remote Maintenance Logging — 'remote' meaning operated from a distance, and 'logging' meaning automatically recording data over time. The 'terminal' is the local end-point device that does the recording and reporting at the facility itself.
Why Pilots Care
Pilots don't interact with RMLTs directly, but they're part of why navaids and ground equipment can be monitored continuously. If a VOR or other facility starts behaving oddly, the RMLT helps maintenance crews know quickly, which supports the reliability of the navigation services pilots depend on.
Intuition Check
Do not read “terminal” here as the passenger building at an airport. In this term, it means an equipment access point or workstation tied to a ground system.
Example Sentence 1
The technician reviewed the data sent from the RMLT to confirm the navaid had been operating within tolerance overnight.
Example Sentence 2
Pilots reviewed the RMLT status before planning the flight.