Indeed, the Autoland system was PFM. Nonetheless, during my time at Boscombe Down, we were tasked with assessing the Autoland by flying a series of Autolands at Bedford to assess the landing scatter (typical that the RAF had to assess something which already worked)! It was "spot on" each and every time... flawless (50 landings I recall).
AAR Trials were "interesting". I recall being behind the TriStar in a C130K to explore the limits of the in-contact AAR cone. The C130K fin strayed into the periphery of the centre engine exhaust of the TriStar and all hell let loose! All 16 wing O/H lights illuminated (on the C130K) and we took an instant diversion to LYE (after swiftly isolating the engine bleeds). When the LEs were removed almost ALL of the bleed couplings had pulled apart!!
That was 25 years ago... Happy Days.
TCF