My experience fixed wing has shown that Instructors rarely put a candidate forward that’s not fully ready for test. As a result it’s pretty rare rare to have to fail a candidate on an LST . I get around 15% partial where the candidate puts themselves under so much self induced pressure they lose the plot on one or two particular elements. At TR level they are usually well versed in the system and know what to expect. For OPC and LPC for pilots who are active on line I can’t remeber the last time I had to partial or fail one. They are professionals and the company tends not to recruit “tools”so they are up to standard. I certainly do not feel any operational pressure to pass anyone. They either make the grade or they don’t. If they did fail then it’s down to the company to decide on a course of action but I know for a fact they would not attempt to over ride me.