DS EN 4639-001:2008 Aerospace Series - Connectors, Optical, Rectangular, Modular, Multicontact, 1,25 Diameter Ferrule, With Removable Alignment Sleeve Holder - Part 001: Technical Specification Defines the general characteristics, the conditions for qualification, acceptance and quality assurance, as well as the test programs and groups for rectangular multipin fibre optic connectors.