ISO 9667 pdf download

ISO 9667 pdf download.Aircraft ground support equipment — Tow bars 1 Scope This International Standard specifies dimensional and physical requirements of tow bar connections to tractor and aircraft (see figure 1 ). It is applicable to any new type of commercial transport category aircraft tow bar designed or built after publication of this standard. The purpose of this International Standard is to standardize tow bar attachments to airplane and tractor according to the mass category of the towed aircraft, so that one tow bar head with different shear levels can be used for all aircraft that are within the same mass category and are manufactured in compliance with ISO 8267. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 8267:1 997, Tow bar attachment fittings for transport aircraft with a maximum ramp mass over 50 000 kg (1 1 0 1 00 lb) — Interface requirements . 3 Aircraft mass categories The aircraft mass categories shall be in accordance with ISO 8267. 4 Aircraft connection 4.1 Dimension of tow bar connection to aircraft The standard configuration of the tow bar connection to the aircraft shall be compatible with the horizontal pin of the aircraft tow bar attachment fitting as specified in ISO 8267. 4.2 Aircraft interface requirements The design of the tow bar aircraft connection device that clamps to the horizontal cylindrical pin of the aircraft: – shall grip the pin uniformly over 96 % to 98 % of its length; – shall be designed to eliminate inadvertent disengagement of the tow bar during towing or pushing operations; – shall be designed to provide adequate clearance during engagement and disengagement of the tow bar from the aircraft connection (allowable space envelope for clearance is specified in ISO 8267); – should be adjustable to provide pressure on the pin when locked. 4.3 Aircraft protective provisions 4.3.1 General requirements The tow bar should be so constructed to prevent any item from becoming a Foreign Object Damage (FOD) hazard, e.g. broken parts of the shear pin and...