AN AIR DATA TEST SET, A PIECE OF AVIATION TEST EQUIPMENT FOR USE IN TESTING AIRCRAFT FLIGHT INSTRUMENTS WHILST THE AIRCRAFT IS ON THE GROUND. A PNUEMATIC PRESSURE CONTROLLER IS USED TO TEST AND CALIBRATE AIRCRAFT AERONAUTICAL INSTRUMENTS SUCH AS: ALTIMETERS, AIRSPEED AND RATE OF CLIMB METERS. THE THREE CHANNEL PRESSURE REGULATOR AND CONTROLLER USES A PRECISION SENSOR TO DELIVER KNOWN PRESSURES TO AN AIRCRAFT'S PITOT AND STATIC TUBES, SIMULATING THE CONDITIONS OF FLIGHT SO THAT COCKPIT INSTRUMENT READINGS CAN BE MONITORED AND EVALUATED FOR ACCURACY.

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 3B HAS BEEN USED AS THE REGULATING AND CONTROLLING ELEMENT IS CONSIDERED TO BE THE ESSENTIAL CHARACTER GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 903220 MANOSTATS TARIC CODE 9032200090 OTHER THAN FOR USE IN CIVIL AIRCRAFT ALSO CLASSIFIED IN ACCORDANCE WITH: HSEN NOTE (1) (A) TO HEADING 9032