Narco HSI-100 Servicing

Occasionally a customer will bring us some “vintage” avionics equipment with troubles.  Narco Avionics has quite a few units still flying around that have not been serviced or supported by the factory for years, even decades.  

The Narco HSI-100 is such a product.  It is a pretty nice, self contained Horizontal Situation Indicator.  It is, however, a handmade item, and servicing is difficult.  It has been out of production for decades and parts are hard to find. 

I was, luckily, able to find two shops who still work on them!  When I inquired for tech assist, both shops responded rapidly with the needed data to help determine if it was an aircraft or unit problem.  IF you ever need help with one of these old HSI’s..these are the folks to talk to.  Thanks for the help, guys!

Peterborough Municipal Airport

925 Airport Rd.
Peterborough, Ontario K9J 6X6

7169 SW Santa Fe Lake Road

Augusta, KS 67010


35 years component-level Aviation/Electronics repair/Avionics retrofit experience. FCC General Radiotelephone with Ship Radar. Navcom-Audio, Transponder-Pulse-Radar, Autopilot expertise. IT Administration since 1983. Private Pilot since 1986. CAD designer since 1990. FAA Certified Repair Station Chief Inspector since 1994. Started 3 Avionics Shops. College: Business Administration/Marketing. Motorcycle enthusiast. 6 year USAF Veteran, Ground Radio Equipment Technician (30474, E-5). WordPress novice.

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