by the Airlines Electronic Engineering Committee (AEEC) where aviation suppliers such as Collins Aerospace and GE Aviation serve as contributors in support of their airline customer base. An abbreviated list follows. 400 Series The 400 Series describes guidelines for installation, wiring, data buses, and databases. ARINC 404 defines Air Transport Rack (ATR) form factors for avionics equipment installed in many types of aircraft. It defines air transport equipment cases and racking. ARINC 407 is a manual for Synchro uses in aerospace systems ARINC 424 is an international standard file format for aircraft navigation data. ARINC 429 is the most widely used data bus standard for aviation. Electrical and data format characteristics are defined for a two-wire serial bus with one transmitter and up to 20 receivers. The bus is capable of operating at a speed of 100 kbit/s. 500 Series The 500 Series describes older analog avionics equipment used on early jet aircraft such as the Boeing 727, Douglas DC-9, DC-10, Boeing 737 and 747, and Airbus A300. 600 Series The 600 Series are reference standards for avionics equipment specified by the ARINC 700 Series ARINC 600 is the predominant avionics packaging standard introducing the avionics Modular Concept Unit (MCU) ARINC 604 is a standard and guidance for the purpose of designing and implementing Built-In Test Equipment. The standard also describes the Centralized Fault Display System. ARINC 610B provides guidance for use of avionics equipment and software in simulators. ARINC 608 Design Guidance for Avionics Test Equipment: describes a standard avionics test system concept that will reduce the cost of test and repair of avionic systems. ARINC 615 is a family of standards covering "data loading", commonly used for transferring software and data to or from avionics devices. The ARINC 615 standard covers "data loading" over ARINC 429. ARINC 615A is a standard that covers a "data loading" protocol which can be used over various bus types such as Ethernet, CAN, and ARINC 664. ARINC 618 is a standard that covers a data transmission protocol called "Character Oriented Protocol". ARINC 619 is a standard that covers a data transmission protocol over ARINC 429 called "Bit Oriented Protocol". ARINC 620 is a standard that covers a data transmission protocol called "Datalink Ground System". ARINC 624 is a standard for aircraft onboard maintenance system (OMS). It uses ARINC 429 for data transmission between embedded equipments. ARINC 625 is an Industry Guide For