In 1999, Shadin was approached by a customer who operated multiple 747 aircraft with old spinning mass gyro technology that needed to be upgraded. The requirement was to replace the old gyro technology with a new Attitude Heading Reference System (AHRS). Due to the replacement AHRS no longer supporting analog outputs, a converter was needed to make a connection between the old technology and the new. Shadin’s engineering team developed a data converter, in the AIS family, which received ARINC data: True Heading label 314, Magnetic Heading label 320. Pitch label 324, and Roll label 325 and send the data over synchro outputs. Shadin was able to have the final unit DO-178 DAL A certified and DO-160 qualified, as well as obtain TSOs in categories C4c, C5d, and C6e.
When designing their Strut Data Collection System (SDCS), Avix Aero discovered a need for a Data Acquisition Unit. The requirements for the DAU were to collect analog aircraft data related to weight and balance of the aircraft. Created by combining the Shadin AIS-100 Memory with the AIS-380 Analog, the AIS-100 Cellular Link stores and transmits data over a wireless mobile network. With Shadin’s DAU, Avix Aero holds the Supplemental Type Certificate for the SDCS on the Boeing 737NG family of aircraft, the Boeing 777-200, 777-300 and 777-300ER with additional STCs under development.
ADS-B transponder upgrades required an ARINC Manchester Converter (AMC) installed in some regional aircraft such as Hawker, Beechcraft, Cessna, Dornier, Embraer, and Bombardier Learjet. Shadin designed a reasonably priced converter to interface with legacy avionics equipment related to the Manchester Communication Bus. Post development, multiple STC options were developed based on this platform such as Elliott Aviation with the Garmin GTX3000 and Peregrine with the Becker ADS-B transponder solution.