BS C 21-1-1997 飞机前起落架与牵引杆的附属装置配件接口要求规范.运输机舷梯质量最大为50000kg(110000 1b)以上.
Specification for interface requirements for aircraft noseleg to towbar attachment fittings - Transport aircraft with a maximum ramp mass over 50000 kg (110000 lb)
This International Standard specifies the interface requirements for tow bar attachment fittings on the nose gear (when towing operations are normally done from the nose gear) in conventional tricycle type landing gears of civil transport aircraft as defined by FAR Part 25 or equivalent national airworthiness regulations. It covers tow bar attachment fittings for aircraft with a maximum ramp mass greater than 50 000 kg (110 000 Ib). This International Standard does not cover tow bar attachment fittings for aircraft with a ramp mass between 13 600 kg and 50 000 kg.