Fuel quantity measurement, 738
Hello guys
I have a tech-question here that bothers me, so I hope that there is a knowledgeable 737-800 technician here that can offer some insight into the problem.
On all flights on the 738 until now and on different specific planes I have noticed the same thing. During inflight fuel checks the FMS indicates that we will have a larger amount of fuel at our destination when we still have fuel in the centre tanks, than when we do during the same fuel checks after the centre tank fuel is used.
On a typical sector of 4 hrs. the difference will be around 300 kgs.
It would seem that the measurement equipment in the centre fuel tank is less accurate than the main fuel tanks, causing a correction when the centre tank is empty.
Would you know the reason for this?