Wasn’t sure where to put this question. Is there a device, I can put in my plane, to locate it, if it accidentally goes down somewhere, i.e. the woods or a corn field ? I’m not talking about Holy Stone, I don’t care about tracking and data and all that stuff. I’m looking for simplicity. Just something to show me where my plane is.
Thanks

How simple? Google would be your friend here. Try variations of searching for "lost radio control plane finder", "gps radio control plane finder", etc., etc.

Basic would be something that emits a loud sound - some do it when power or radio signal is lost to the system, some by command from the radio, some with both options.

There are a variety of gps units that send "where" information to the TX (if capable), your phone (usually via Bluetooth), or a separate hand held device.

Many radios have a signal strength reading that tell you what strength the receiver is getting (if it is still working) - so can be used to home in on the area - I've done that a few times in a cornfield- walk in the direction of increasing strength, until you find the area with max, and look around. It has gotten me close - the hard one was that I couldn't find it until I looked up, and there it was suspended in the corn above my head and not on the ground.

Unplanned landings have various levels of problems. Some can result in "unscheduled rapid disassembly" of even very basic components - wires ripped loose, batteries disconnected, etc. So one has to take durability into account.
Those that emit sound may or may not be able to be heard from a longer distance. They may have their own power, but it is kept small for weight/cost/size savings - but then don't make the sound for very long.
So one has to make choices as to the cost, ability of the item to withstand damage either to itself or the larger system, resolution as to exactly where the model is, complexity of use, whether you have a general idea of where the crash site is, distance, etc., etc.

Apple Air Tag

On another forum it was stated that Air Tags don't work that well. The free flight community have small radio transmitter that they put in their models. They use "direction finder" technology.

Yeah, they don’t work. An AirTag looks for any Apple device (owned by anyone) to to learn its location. So if it’s out in the middle of a cornfield, with nothing around, your out of luck. Thanks

Thanks for the excellent response! Lots to think about. For now I decided to try an on-board “beeper” that plugs between the Rx and a servo.
BTW, LMAO with “Unplanned Landings “ and Unscheduled rapid disassembly” !

That last I borrowed from SpaceX, as it is how they described the results of some of their rockets at/after launch....

Yes, there are several audible locator devices that simply plug into a spare receiver channel port. They have been around for a long time. I have a couple from 40 years ago. Amazon has them for $7. Look here: