Engine Inspection Select the Airworthiness Directive applicability statement which applies to an IVO-355 engine, serial number T8164, with 2,100 hours’ total time and 300 hours since rebuilding. a. Applies to all IVO-355 engines, serial numbers T8000 through T8300, having less than 2,400 hours’ total time. b. Applies to all IVO-355 engines, serial numbers T8000 through T8900 with 2,400 hours or more total time. c. Applies to all I.O. and TV10-355 engines, all serial numbers regardless of total time or since overhaul.