CS 25.1167 Accessory gearboxes

• ED Decision 2003/2/RM found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

CS 25.1167 Accessory gearboxes ED Decision 2003/2/RM For aeroplanes equipped with an accessory gearbox that is not certificated as part of an engine – (a) The engine with gearbox and connecting transmissions and shafts attached must be subjected to the test specified in CS-E 160 and CS-E 740, as applicable. (b) The accessory gearbox must meet the requirements of CS-E 80 and CS-E 590, as applicable; and (c) Possible misalignments and torsional loadings of the gearbox, transmission, and shaft system, expected to result under normal operating conditions must be evaluated.