Originally Posted by
DaveReidUK
See my earlier post(s):
a) the altitude traces from the flight-trackers clearly aren't relative to a SL datum (i.e. uncorrected for QNH)
b) the GA started at around 1.6 nm from the THR (so presumably at around 500' AAL)
c) there was no runway contact (the THR was overflown at around 1700')
In other words the tracking data is consistent with the video, as one would expect.
There had to be a major difference between actual QNH and STD to get that 500 ft difference. What was the QNH at the time?
In my experience, FR24 gives poor altitude information close to airports. Track information is better.
When i follow a flight it often stops at a few hundred feet, flies over the runway and then drops straight down to the ground.
OMG, it nose dived into the ground! No, just FR24 acting up.