Alas, it appears all the aviation-related questions have been ... well ... there's no other word for it .... censored.
One only needs to read the many questions 'approved' for publication that have been asked by the likes of "Pedro" to see that the criteria for non-'approval' can't have much to do with the merits or validity of the question.
Either that, or the work experience kid who does the 'approval' had an appointment with the orthodontist and detention today.