[Star Traveler]

When that other airliner disappeared about ten years ago (and was never seen again) - did Israel prepare the same way they are now?

[ought-six]

“When that other airliner disappeared about ten years ago (and was never seen again) - did Israel prepare the same way they are now?”

What airliner was that?

[publius911]

When that other airliner disappeared about ten years ago (and was never seen again) - did Israel prepare the same way they are now?

Things have improved somewhat in the last 80 years. In the art of aircraft design, communications and other useful technology.
Still, the "without a trace" modifier is overused; Those are a meaningful handful, in the "airliner" category, remarkable when considering the millions of airliner flights worldwide since 1945.

Here is one list :

Aircraft which have disappeared

[wtd]

"When that other airliner disappeared about ten years ago (and was never seen again) - did Israel prepare the same way they are now?"-Star Traveler

Don't know. But this certainly adds the possibility of there being multiple planes masquerading to confuse defenses.