Spacing of runway lights
Someone asked me this question the other day and i have to admit I had no idea what the answer is!
Is edge lighting spacing dependant on runway width (in order to maintain correct visual "perspective" on approach)? if so what is the formula for calculating this.. If not, what is the spacing exactly? Is it variable? I'm usually too busy (T.O/landing) to notice or try and work it out!! Can't seem to find it in any reference either. Any input appreciated.