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teach repair of avionic boxes
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Keep in mind a few things...
As, I'm sure you know, those "avionics boxes" may perform a variety of functions, from simple audio amplifiers to very complicated computerized units. Only to name a few: audio panels, freq selectors, DME, ADF, Radio Altimeters, Selcal Decoders, Auto Pilots, FMC, radar, GPWS computers, ILS/VOR receivers, Transponders, HF transceivers,antenas, couplers, RF compensators, VHF transceivers, HUD systems, flight director computer,displays/indicators (of various kinds), elt's, CVR, FDR, gyroscopes, engine/fuel indicators, GPS and I'm sure I'm missing
a few more.... My point is, that depending on the age/type of equipment you work on, the possibilities are immense. My background is in older equipment, here your best tool is a solid understanding of electronics, (down to component level).I have a avionics technology diploma from George T Baker
-HERE- school in Miami and years on the field. In this program, the bulk of the training is in electronics (I believe it's 1440 hrs electronics and 720 avionics/aviation related). Now I've been to shops where the tech plugs the equipment to a multi-million computer, goes for coffee, and 15 minutes later comes back and swaps whatever board the computer tells him to change. In some other shops I've seen techs under X1000 magnifying glass, replacing tiny components as small as the ones you have on you wristwatch.
In conclusion, it will be very hard for a school to teach these very different skills, and I think that that is why there is no certification from the FAA specific for Avionics Tech..
You are dealing with electronics, computers, mechanic (and even cosmetic skills), all grouped together in that "Avionics Tech" title.
Depending on where you work you'll have a training log, and that will be the way of proving your experience to the FAA inspector...
From my experience, I think the greatest skill that an Avionics Tech should have is RESPONSIBILITY to do the job right (too many lives depend on this) and for that trust me, you will not find a school...