Outer marker substitute
Question on AUTOLAND Fail passive and outermarker. My SOPs that i follow mention - Call: “OM___FEET, FLAGS/NO FLAGS.” For a Dual Autoland, Fail passive for the 737 NG.
In the UK there is hardly no OM and maybe a few in the Euro land. So what would be the substitute for the OM? 1000ft AAL? 4DME?