Underwood Instrument Services Inc

U-ISi provides repair and overhaul for over 60 different manufacturers of aviation equipment composed of 3,000 different instrument items including pneumatic equipment, ADI’s, HSI’s, gyros, engine instruments, etc.

We provide a 24-hour A.O.G. service through an answering service and cellular phone service. Eight of our most experienced technicians are available to provide direct assistance to the end-user 24 hours a day, 7 days a week.