It’s too bad it will take something like the Malaysian airliner incident to get airlines and airplane manufacturers off their duffs. We’ve put men on the moon and ventured beyond, but we can’t seem to develop locator devices for planes that will work.

Why aren’t there nearly impervious transmitters, tamper-proof even by crew members, that can produce signals for weeks after a disaster or hijacking? What is the problem, and don’t say it’s cost?

— Greg Beaumont, West Des Moines

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