A GENERATOR CONTROL UNIT (GCU), USED TO MONITOR AND CONTROL THE INTEGRATED DRIVE GENERATORS WHEN THEY ARE POWERING AIRCRAFT LOAD BUSES. IT HAS TWO MAIN AIRCRAFT TASKS: CONTROL AND PROTECTION; TO MONITOR AND CONTROL THE QUALITY OF ELECTRIC POWER SUPPLIED TO THE AIRCRAFT AND BUILT-IN TEST EQUIPMENT (BITE); TO COLLECT AND ANALYSE FAULT DATA AND SAVE THIS FOR LATER RETRIEVAL BY MAINTENANCE PERSONNEL.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 9032 - AUTOMATIC REGULATING OR CONTROLLING INSTRUMENTS AND APPARATUS GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 9032 89 - OTHER INSTRUMENTS AND APPARATUS: OTHER THAN HYDRAULIC OR PNEUMATIC TARIC 90328900 10 FOR USE IN CIVIL AIRCRAFT ALSO CLASSIFIED IN ACCORDANCE WITH:- NOTE 7(B) TO CHAPTER 90 HARMONIZED SYSTEM EXPLANATORY NOTES (HSEN) (II) TO HEADING 9032