The Beechcraft King Air 90 Component Maintenance Manual (P/N 90-590012-33) and the King Air 90 Overhaul Manual for Beechcraft Manufactured Components (P/N -90-590012-39) are prepared in accordance with the ATA (Air Transport Association) Specification No. 100 format. additional airframe manuals, which supplement this overhaul manual are the BEECHCRAFT King Air 90 Wiring Diagram Manual. P/N 90-590012-15. and the BEECHCRAFT King Air 90 Maintenance Manual, P/N 90-590012-13. Further overhaul instructions will be incorporated into this manual as the additional information becomes available.