Hey d_b,
When I need to consult the "Oracle", I now know where to come.
Perhaps you ought to change your nom de plume to
"Fountain of All Knowledge"!
But alas

Night rating invalid ..?? Aaah not possible to maintain over summer daylight saving at provincial airfield I guess

Lucky I can drive acroos field and climb into cockpit H24.
The more I think about it, I have a great employer
If this JAR business gets any more complex, I am going to vote for an independent G.B.
Now what would Spock say to that