Avionics-List Digest Archive

Sun 07/08/07


Total Messages Posted: 1



Today's Message Index:
----------------------
 
     1. 02:32 PM - PMA'd relays? (Doug McNutt)
 
 
 


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    Time: 02:32:40 PM PST US
    From: Doug McNutt <douglist@macnauchtan.com>
    Subject: PMA'd relays?
    I'm looking for a source of approved relays for a project I'm working on that will need a field approval. The airplane is a Cessna 207 with a 12 volt system and it's getting a 200 amp alternator and a 60 Hz 2.5 kW 60 Hz inverter. What I need are a DPDT 14 volt relay and a DPDT 120 VAC relay that I can use to get the switching logic I need to switch between ground and flight operations. Actually I have space-qualified relays from Potter & Brumfield and Filtors Inc. but they are no longer made and never had any kind of FAA certification - only NASA and perhaps the USAF. They'll work fine but I can't document them for the feds. The transmit/receive relay from an old Narco COM11 is one option but they come from the likes of Digi-Key and don't carry a PMA sticker unless you're Narco or King. Any ideas? -- --> Evolution made it possible for mankind to invent religion. <--




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