ISO 2026:1974 PDF

Specifies the dimensions which are necessary to ensure international interchangeability of connectors with adaptors. Also gives the minimum clearances required on the aircraft to provide adequate access for the ground adaptor. The basic dimensions and tolerances for connections on aircraft and the minimum clearances around the connector, on the aircraft, are given in figure 1 and table 1 and figure 2 and table 2, respectively.