I finally got the old Collins VHF-422A in that Cessna 172 to stop squawking 1200

Spent a whole Tuesday chasing a ghost signal that turned out to be a corroded coax connector behind the panel. Has anyone else had a nav/com unit act up from just a bad ground strap?

4 comments

4 Comments

evan_grant701mo ago

Tell me about it, those old birds love to throw a fit over the smallest things.

williams.luna1mo ago

Chasing a ghost signal for a whole Tuesday sounds about right. Those old Collins units can be real drama queens over a bad ground.

nathan_kim1mo ago

My old Archer’s nav died from a single frayed ground wire under the seat.

perry.jesse1d ago

That ground wire was probably doing you a favor, those older radios needed an excuse to retire.

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