Again the 516 from LVA, but now renewed to Fokker CIa. That happened from 1929 on.
The CI's engines were replaced by the 200 hp air-cooled Armstrong-Siddeley Lynx.
The ailerons were built into the wings.
The ordinary, somewhat larger tires are replaced by smaller low-pressure tires.
Also pay attention to the more modern LVA flying overalls and the somewhat more informal quarter hats or kepis.
The current Royal Air Force still uses them.