Baseline EFB data loading will use an ARINC 615A data loader. A terminal wireless LAN unit also can be used to load data via an IEEE 802.11b link to an airport access point. (Other applications also could use the link.) The wireless link is part of a data distribution and management (DDM) system, allowing airlines to move data to the EFB every time the aircraft is on the ground and the airplane is in contact with a compatible airport access point. Software in the DDM ground system and the EFB manages loads so that they can occur incrementally. "The airline can manage its own data loads with CD distributions, or can use DDM to control the EFB software configuration from its home offices, manage the data loads, and schedule the installation," Allen says