DI,
Long time no speak! Hope all is well up there and I bet you're enjoying yourself in the darkness now the bangers have all but gone for the year.
I was thinking the same thing myself about a fuel flow of 14USG/hr. That equates to around 53L/hr which sounds about right.
The 206 (an F model, god bless her) I used to fly had a fuel flow gauge in USG, while all the 210s I have flown are in lbs/hr. Normal cruise rate around 80-90lbs/hr. Perhaps he was getting 14lbs/hr in a 210, in that case i'd be pretty worried too!!!
Anyway, good on him/her!
TL