My research has been finished on the Australia CASA
AIRWORTHINESS DIRECTIVE AD/B767/220.
Requirement: Unless previously accomplished, amend the aeroplane Flight Manual by including a statement to the following effect:This aeroplane should not be operated beyond the single engine cruise range of an
adequate aerodrome whilst on direct fuel feed, unless a satisfactory operational check of the fuel crossfeed valve has been carried out. This check should be performed during the last hour of the previous flight or prior to reaching the above critical phase of the extended range flight after adequate cold soak time at cruise altitude to include temperature effects on valve performance.
Last edited by Yury; 11th November 2009 at 08:52.