Intermittent . . .?
Or it was something of an intermittent nature that was not recorded.
Either because something migrated but was restored before reaching a recording parameter. Or it was not on the list of recording parameters at all?
The AAIB states: "The spar valves and the aircraft fuel boost pumps were serviceable and operated correctly during the flight."
This would imply for the spar valves, to make the AAIB reach that conclusion, that both open and closed positions are continuously recorded and any migration from the open to the closed position but not reaching the closed position is also sensed and continuously, accurately recorded.
If so, then the spar valves are ruled out as suspect.
Green-dot
Last edited by Green-dot; 13th May 2008 at 20:12.
Reason: Typo