Loading…

Showerthought: Pushing back on a pressure call for a comms check | Avionics Technicians - Talk Freely

Showerthought: Pushing back on a pressure call for a comms check

I had a job last week where we were doing a post-mod test on a radio stack. The crew chief was breathing down my neck to sign off because the bird was due for a night flight. I found an intermittent fault in the antenna coupler, but it passed the quick test. In my experience, that kind of flicker can mean a bad ground under the panel. Your mileage may vary, but I told him we needed to pull the unit for a bench check. It's a moral gray area because the book says if it passes, it's good, but my gut said otherwise. Take this with a grain of salt, but I held firm and we found a cracked solder joint. Sometimes doing the job right means annoying people, but that's aviation for you.

3 comments

3 Comments

palmer.christopher7mo ago

Good on you for trusting your gut over the book. That flicker you described is exactly the kind of thing that turns into a full comms drop at the worst possible time. A lot of techs would have just signed the paper to avoid the heat, especially with a night flight hanging over them. Finding that cracked joint proves the real job isn't just following steps, it's knowing when the steps aren't catching everything. It's annoying in the moment, but you definitely saved someone a huge headache later.

lee4597mo ago

My buddy Jake who fixes vintage radios had a similar thing happen last month. He was following the service manual for a 1970s receiver, and all the tests passed. But he kept hearing a faint buzz that wasn't in the guide. He decided to pull the whole board and found a cold solder joint hiding under a capacitor. Manual didn't catch it, but that buzz would've driven the owner nuts. I mean, sometimes you just gotta listen to that little voice, you know?

jackson.wren7mo ago

But what if you're wrong and you just wasted everyone's time? I mean, the book exists for a reason, right? It's the tested way to know if something is broken. If we all just went by a gut feeling, you'd have planes grounded over every little hunch. That pressure from the crew chief is there because delays cost real money and mess up other people's plans. Sometimes a flicker is just a flicker, and you held up a night flight for a maybe.