I suspect there is a discrepency with the MEL. There is no reason why it should affect the aircraft autoland status as all ATS modes are available with PMC inoperative. The only operational limitation is the requirement to set engine power manually on T/O, however ATS can be re-engaged after gear retraction. The engines are also susceptible to throttle stagger with ENG TRIM selected off and some minor 'tweaking' of the thrust levers may be necessary to adjust N1 to their respective targets.
tubby/EGKK - you are welcome to contact the engineering line office if you ever have a technical query, we'll be more than happy to help.....
