11.5 Instruments and Avionics Systems ATA 31
11.4 Air Conditioning and Cabin Pressure ATA 21
fuselage wings stabilizers flight control surfaces nacelles and pylons.airworthiness requirements and structural strength construction methods structural assembly techniques methods of surface protection surface cleaning airframe symmetry 11.3 Airframe Structures - Aeroplanes ATA 52-57.airplane aerodynamics and flight controls high speed flight.