Question time # 113

Chocolate fish # 113 is up for grabs.

All we need to know this round is :-
1: What engine type lurks behind this propellor ?
2: How many engines would you find on this aircraft ?
4: How many passengers sit side by side across the back row ?

3: What aircraft do we have here then ?
5: A likely registration for this flying machine may help sift out the flood of correct answers.