6610-01-423-5889 (829 550829)
NSN 6610-01-423-5889 (NIIN 01-423-5889) is a gyroscopic heading indicator in Federal Supply Class 6610, Flight Instruments — an instrument designed to display the degree of variation, or the angular value between true or magnetic north and the longitudinal axis of the aircraft. Manufacturer part number 829 550829; also referenced as 550 829 (Piper Industrial Manufacturing).
NIIN assigned January 1996; DEMIL A (none required); ESD/EMI-sensitive; export Schedule B 9014.90.0000.