In my opinion, this is not Aleucourt but Alincourt.
N31 was based at Lhéry, west of Rheims, Alincourt is east, about 50km.
I was interested in Nieuport #1930 because there is lot of pictures of it in german markings. This aircraft sported N48 cockerel head insignia and was flown by Robert Bajac and Jacques Roques before being captured.
I was not able to find its pilot because no N48 loss would match the date of the plane capture, until I found in FASWC
that the pilot belonged to N31.
At that time , GC11 (N12, N31, N48, N57) was transitioning to Spad 7 and maybe they didn't care to repaint the last Nieuports with new squadron insignia. Or maybe Chautard "borrowed" the aircraft (see this tread
). According to german source, he landed on a german aerodrome so Alincourt is very probable.
If you have more infos I would be very interested.