The Portable Maintenance Access Terminal/Large Display (PMAT/LD) is the latest version of the highly reliable, rugged computer platform designed for use in an aircraft environment. The PMAT/LD is designed to meet DO-160D environmental and EMI requirements, while maximizing the use of Commercial Off The Shelf (COTS) components/subsystems. The PMAT/LD runs the Microsoft Windows 2000 Operating system and has an integrated DVD/CDROM drive and a large 14.2" display.

The PMAT/LD was designed to support Boeing 777 aircraft by providing the operator interface to the Airplane Information Management System/Onboard Maintenance System (AIMS/OMS), which includes the Central Maintenance Computer Function (CMCF) and Airplane Condition Management System (ACMF). It also can copy the Loadable Software Airplane Parts between the Maintenance Access Terminal Hard Disk Drive PC Card and the PMAT/LD internal Mass Storage Device.