PJ2,
Interesting flightpath profile information, which program are you using? Are you just plotting the .kml file from FR?
I thought that the ADSB showed 0 altitude when the ac was on final (per earlier posts)
What is the lowest altitude that you are showing,is this the 150' add that you used?
Note that there is a 50' TCH on the flightpath, not a direct line to TCH 0.
So you know, ADSB data reports altitude in 25 foot increments, and has latency factors in the system, to which there is about an 8 second delay.
It is notoriously inaccurate in reporting altitude on final approach due to the descent rate and kalman reporting latencies, especially if there is rapid descent, a turn or crosswinds.
Last edited by underfire; 30th Mar 2017 at 05:25.