The document specifies the basic dimensional and access clearance requirements for pressure testing connections on pressurized aircraft for coupling with the hose unit or adaptor of ground pressurizing equipment.
DIN ISO 11:1997 history
1997DIN ISO 11:1997-10 Aircraft - Ground pressure testing connections for pressure cabins (ISO 11:1987)
1997DIN ISO 11:1997 Aircraft - Ground pressure testing connections for pressure cabins (ISO 11:1987)