[bwr014]

Peter,

Please have a look at the PM site under docs.. you can find them all there...

here is the STD one:

5414 4 MCP/FCU Buttons B32-63 (Read/Write)

ASTI Bit18 (AB STD/QNH push)
ASTO Bit19 (AB STD/QNH pull -> STD BARO 29.92 in)

gr.

Frans M

PS remember that this QNH have 6 options in it. Push/pull,switch left/right and rotery left/right for setting... all in one