Quote :-
.............. Data, downloaded from the Electronic Engine Controllers
(EECs) and the QAR, revealed no anomalies with the
control system operation. At the point when the right
engine began to lose thrust the data indicated that the
right engine EEC responded correctly to a reduction
in fuel flow to the right engine, followed by a similar
response from the left EEC when fuel flow to the left
engine diminished. Data also revealed that the fuel
metering valves on both engines correctly moved to the
fully open position to schedule an increase in fuel flow.
Both fuel metering units were tested and examined, and
revealed no pre-existing defects. ..........
unquote
A question - IF, repeat IF, the fuel is o.k., the EEC commands were correct, the pumps, filters, etc... worked o.k. - then what is left ?
One thing I don't think is properly mentioned (?) is the ACTUAL operational records of the fuel pumps. Yes, they were tested afterwards and considered capable of working at full capacity, however, I PRESUME that they are variable speed, so would the speed that they were ordered to work at and that they actually worked at be recorded anywhere ?
.