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-   -   MODE S for Candada (https://vansairforce.net/community/showthread.php?t=141688)

Canadian_JOY 09-09-2016 07:47 AM

"Just to add to that. The 24-bit code is entered by the installer (or airplane builder in this case) and not Van's. See 10.4 here (https://www.tc.gc.ca/eng/civilaviati...-497.htm#s10-0)"

Another point of clarification. The original post here was about 406MHz ELT programming. This programming, including the 24 bit ICAO code, is done by an Approved Maintenance Organization or a maintenance organization holding similar foreign (e.g. FAA) approval. Fleet operators will use a programming dongle to accomplish this task so as to ensure the ICAO code programmed into the ELT matches the airplane in which the ELT is installed. (On a side note, there has been one well documented 406MHz ELT failure resulting from an aircraft being dispatched with the programming dongle still in place, inhibiting the ELT's transmission. A terrible mistake on the part of the aircraft maintainers.)

When it comes to Mode S transponders, the guidance provided in the referenced Advisory Circular is absolutely spot-on. Some transponders require the ICAO code to be entered through front-panel controls, while some require the address to be hard-wired via discrete wires in the connector. Either way, the ICAO code goes with the airplane, so if you happen to have just installed a Mode S transponder, or if you've just received one back from the repair shop, double-check to ensure you've got the right 24-bit ICAO code programmed.

sbal0906 09-09-2016 08:06 AM

D'oh! Thanks for clarifying. I had it in my head we were talking about transponders. ... haven't had coffee yet.... :o

Cheers,

Canadian_JOY 09-09-2016 08:26 AM

Quote:

Originally Posted by sbal0906 (Post 1110229)
D'oh! Thanks for clarifying. I had it in my head we were talking about transponders. ... haven't had coffee yet.... :o

Cheers,

Hey no worries, Shamit. We've grown from building NORDO airplanes to building airplanes with capabilities that rival modern airliners. I think most of us have experienced confusion at least a few times in our build as we try to figure out which wire goes where, and why! Coffee sometimes helps. Sometimes walking away and not thinking about it for a day helps. Whatever works. Build on! :D


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