Sch./P.A.R.10 Nr.148

[F10_Chainsaw]

Just bumped into this one in the KG55 losses pdf. What does it stand for?
Sch./P.A.R.10 Nr.148

9 April 1941 He111 P-2 5./KG55
Gl+DN Wk Nr 1423 (P) Uffz. Alfred Müller
(Sch./P.A.R.10 Nr.148) killed,(O) Gfr. Rudolf
Langhans (3.(E).A.R.109 mit Nr.100) killed, (W)
Gfr. Heinrich Berg (13./Lg.Nachr.Rgt.l/ Nr.702)
PoW and (FE) Uffz. Gerhard Neumann (67020/
113) killed. Shot down by F/Sgt. E.R. Thorn
DFM and Sgt. F.J. Barker DFM in a Defiant from
No. 264 Squadron during a mission to Birmingham.
Crashed at Lodge Bottom, Busbridge,
Surrey.

Googled but found nothing...

cheers!
Thomas