I've got the old Collins NAV/COMM as separate units as my secondary radios. The COMM small dial does not tune correctly and will skip numbers and I have to keep turning it until it eventually will get where I want it. I had no idea how expensive new Nav/Comm units were. I can find a cheap replacement on ebay for a few hundred bucks. What do I need to do to make it legal for my plane?
Collins COMM
- Thread starter teethdoc
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Clark1961
Touchdown! Greaser!
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Probably about the same price for a replacement as to get yours fixed. The plastic gear train for the tuning mechanism has to be replaced (as I understand). The 'kota used to have the Collins radios so I had looked into repair of the tuning mechanism.
Anyway, swapping radios for identical units is owner allowed. I've got a Collins 251 if you're interested. It's got bad tuning mech so it wouldn't do you much good except give you a spare to have on the shelf after it's repaired.
Anyway, swapping radios for identical units is owner allowed. I've got a Collins 251 if you're interested. It's got bad tuning mech so it wouldn't do you much good except give you a spare to have on the shelf after it's repaired.
GMascelli
En-Route
Do yourself a favor, give Stellar Avionics a call and at least get a quote. Stellar does very good work and it's a quick turn around. I have used them for my Collins 251, for receive problems.
Stellar Avionics Services LLC
59 Winthrop Road, Hangar 1
Chester, CT 06412
United States
Phone: 860-322-4244
Fax: 860-322-4071
Email: [email protected]
Stellar Avionics Services LLC
59 Winthrop Road, Hangar 1
Chester, CT 06412
United States
Phone: 860-322-4244
Fax: 860-322-4071
Email: [email protected]
Silvaire
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You'r not facing any legal or airworthiness issues but buying one off ebay is gonna be a crap shoot. I mean, non of these units are spring chickens. I bought one from Bennet Electronics for about $700 for my Champ because I needed something that would use a small footprint of panel space and I figured the segmented LED's would warm the cabin a bit for those rare occasions I go over 5,000 feet.
So far it's worked even if the display warmth is mostly psychological.
So far it's worked even if the display warmth is mostly psychological.
N747JB
Final Approach
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If you're gonna keep the same radio, have it repaired and buy another used one as a spare, cheap insurance! 
Years ago we had ARC 422 (?) nav/comms with the plastic gears, I replaced on with a Narco MK12D and kept the old one as a spare for the number 2 radio. Those old plastic gears just don't seem to do well after 20-30 years.
Years ago we had ARC 422 (?) nav/comms with the plastic gears, I replaced on with a Narco MK12D and kept the old one as a spare for the number 2 radio. Those old plastic gears just don't seem to do well after 20-30 years.