PEC
Preparing for my helicopter IR and reading The Air Pilot's manual Vol. 5 (Trevor Thom). near the end he talks about a position error correction of 50' to be added when calculating minima. Only for a precision approach.
Where does this come from? Is it a UK requirement?
Other schools I have flown with outside the UK do not have this and use 200' (ILS) straight off the Jeppesen plates even for light aircraft, like JAR-OPS.
What minima do private pilots and GA pilots in the UK use? JAR-OPS or must they always calcualte their own like it shows in this manual using OCH and procedure minima?