- Install ' 48A Aux Power - APO Fs.ry Test - Improvement 413 APU Starter Drop-tut Light #49 Cockpit Display & Nose Compartment Fans - Replace 497 Air Cond. - Cockpit Temp. Sensor Replace/Relocate 4110 Elect. Display Controller fl & 42 Wiring Modification €119 APU Shut-down Modification 4122 Take off