On Monday, February 13, 2017 at 2:45:27 PM UTC-5, Jonathan St. Cloud wrote:
Came across a blast from the past on youtube. There was a video of teaching s-turns for glide path control. Looked to be from the 40's. Not sure why they would teach this when a slip would be safer and more effective.

If the pilot has the skills and judgement to use S turns on final without reducing safety margins, he or she most likely would have the skills and judgement to not need them.
UH