Electromechanical Indicators

Customers seeking information regarding production, repairs, or spares for any of the listed electromechanical products should contact Extant Aerospace directly.

For over 50 years, Astronautics was the largest producer of electromechanical Attitude Director Indicators (ADI), Horizontal Situation Indicators (HSI) and Bearing Distance Heading Indicators (BDHI) for fighters, trainers, helicopters, military transports, and special mission aircraft. In May of 2022, Astronautics announced the sale of its legacy electromechanical product line to Extant Aerospace. The agreement included production, repairs, and spares activities associated with the company’s electromechanical HSI, ADI, and BDHI products.