Aircraft Ground pressure testing connections for pressure cabins Ahronefs Raccords pour essais de pressurisation au sol de la cabine des akronefs INTERNATIONAL STANDARD t ;; IS0 11 Second edition 1987[.]
INTERNATIONAL t ;; STANDARD IS0 11 Second edition 1987-02-01 INTERNATIONAL ORGANIZATION ORGANISATION INTERNATIONALE MEXJJYHAPOAHAR OPfAHHM~HR FOR STANDARDIZATION DE NORMALISATION l-IO CTAHJjAPTMJA~MH Aircraft - Ground pressure testing connections for pressure cabins Ahronefs - Raccords pour essais de pressurisation au sol de la cabine des akronefs Reference number IS0 11: 1987 (E) Foreword IS0 (the international Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies) The work of preparing International Standards is normally carried out through IS0 technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting International Standard IS0 11 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles This second edition cancels and replaces the first edition (IS0 11 : 19801, of which it constitutes a minor revision Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated International Organization for Standardization, 1987 Printed in Switzerland INTERNATIONAL IS0 STANDARD Aircraft - Ground pressure cabins Scope and field This International specifies requirements on pressurized aircraft tor of ground pressurizing tion are specified of application Standard access clearance pressure testing for coupling as follows the basic dimensional for pressure testing and bore Reference IS0 725, IS0 inch screw threads - 1) (0.875 in) Three sizes of connec- Requirements Recommended Basic dimensions cabin volume Not exceeding 10 ma (300 fta) 46,04 mm (I 812 in) 10 to 45 m3 (300 to 500 ft3) 72.39 mm (2.85 in) 45 to 170 ms (I 500 to 000 ft3) The 22,22 Basic dimensions with the hose unit or adap- equipment The basic dimensions 22,22 mml) for connections 3.1 Connection connections 11 : 1987 (E) requirements 3.2 Access The clearance accordance of the connections shall conform to the of the figure with clearance allowed around the connections shall be in the figure mm (0 875 in) bore connection should be used as the fitting for ducting pressure testing IS0 11 : 1987 (El h : Chamfer for 875 and 812 nominal bore size -t I ?z e :’ s k a, I I \ A-A \ \, \\\\ y Permissible limit of permanent structure Undercut to thread minor diameter Detail of start of first thread for 85 nominal bore size 1) Recommended 2) Full thread 3) Radius 4) Threads bore in accordance with IS0 725 Figure - Basic dimensions and clearance requirements IS0 11 : 1667(E) UDC 626.7.026: 621.643.414 Descriptors : aircraft, aircraft cabins, pressurized cabins, pressure tests, aircraft equipment, Price based on pages pipe fittings, inlet connections, dimensions