Function Flight After all Engines Replaced
Can anyone point me in he direction of any EASA requirement to perform a Function / Handling Flight when 50% or more of the engines are replaced.
I know a lot of Companies have this as a SOP after a C/D check essential crew only etc.
This is on a large aircraft, on a twin if both are replaced or a 4 if 3 are replaced.
I know it was UK requirement prior to EASA.