P.1 u/s hours ( i.e. as co-pilot doing the landing) and so he didn't have the required P.1.
In a single pilot aeroplane, which I think we're definitely talking about, you're either P1, P/UT, or a passenger. Landing the aeroplane, he's a passenger handling the controls, or if the captain was an instructor, a student.
The airline was quite right in my opinion, and he was lucky not to be reported to some authority or other for attempted fraud.
G