A320 family - takeoff fuel flow FDR anomaly (to me)
Hi,
I am examining the flight data records of A319/320/321 and so often see that the fuel flow records of one engine maintain the exactly same FF value for a while: at takeoff and some initial parts of the climb and do not even change slightly (for instance during lift off FF1=2039 kg/h and exaclty same for a while and FF2 is something 3600 kg/h and it changes gradually). And is not this FF1 so low for takeoff moment? and what about the difference in FFs of both engines for the example above?
Could it be a FDR fault (but I have hundreds of the similiar cases) or something related to flat rate (which I didnot know flat rate can provide a reduction in fuel flow at this level). And are the V2500 engines and EEC's accurate that much? Or could it be something with the AP command on fuel flow control procedure?
I have not seen such cases in Boeing 737 or 738.
Thanks a lot in advance.