Originally Posted by
flite idol
interesting report. Obviously still vivid in your memory. False G/S capture from above us a very real and present danger. Cross check of fix altitudes is vital once established to mitigate.
Except that this was bad equipment. There should be no flyable glideslope at 5.5 degrees. A reversed glideslope is preset at 6 degrees normally but that is not flyable because it will show low when you are actually above that false glide slope.
The 9 degree false glideslope is flyable again as down and up will indicate "correctly".
The need to cross check altitude with DME remains of course no matter what the problem with the ILS.
Just saying that this is was not what a typical false G/S capture from above looks like.