Quote:
Flight tracking data, if correct, indicates A/C platformed at 3100', Jep chart states 3400'.
FR24 will be showing uncorrected Mode C data. (encoded alt based on 1013)
QNH was 1023/1024 according to the METARs.
30 ft/HPa
So 300 ft sounds about right.
Very often FR24 lands you on a parallel non existent runway or hundreds of meters after or before