Communication Systems is a series of standards and endorsements developed for the AET Certification. Currently there are two areas that have been defined, Radio Communication Systems and Onboard communication & Safety Systems.
In order to challenge the endorsement exams for the AET the candidate must have already been awarded the AET Certification and submit a Pre-Authorization request. The candidate must present their NCATT AET card at the time of testing.
AET Standards & Endorsements