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    ISO 11

     

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    ISO 11:1987 Aircraft — Ground pressure testing connections for pressure cabins

    ISO 11 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, This second edition cancels and replaces the first edition (ISO 11: 1980)
    ISO 11:1987 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. Three sizes of connection are specified as follows :
    Connection bore Recommended cabin volume
    22,22 mm 1) (0.875 in)
    Not exceeding 10 m3 (300 ft3)
    46,04 mm (1.812 5 in) 10 to 45 m3 (300 to 1 500 ft3)
    72,39 mm (2.85 in) 45 to 170 m3 (1 500 to 6 000 ft3)

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