We do get some nuisance alerts from time to time, and part of my job is to investigate them and determine the cause. I did investigate one recently, however, where the cause was a runway that was "one-way". Most runways have two ends and the pilot/ATC determines which one to take off. EDDF (Frankfurt) RWY18 is only used for takeoffs and was causing nuisance alerts due to the way we search for the runway in front of the aircraft.
There's another runway (I don't remember where) where the direction in our database does not match what satellite imagery shows. I don't work in the database group but I was told that this can only be fixed by asking the airport manager to re-survey the runway. Short of that, we can't fix it even if we know it's wrong.
However, It's quite rare for them to be due to a database that's out of date -- most of the time it's due to an incorrect determination that the aircraft is taking off or landing.
There's another runway (I don't remember where) where the direction in our database does not match what satellite imagery shows. I don't work in the database group but I was told that this can only be fixed by asking the airport manager to re-survey the runway. Short of that, we can't fix it even if we know it's wrong.
However, It's quite rare for them to be due to a database that's out of date -- most of the time it's due to an incorrect determination that the aircraft is taking off or landing.