I don't know Noggin, read the AIC and get the
real answer? That's a pretty radical idea!
http://www.ais.org.uk/Uk_aip/pdf/aic/4P007.pdf
Paragraph 3 makes it clear that equipment which does not comply with AN 84 must be placarded as such and can be used
on VFR flights only. So, not only no approaches of any kind in IMC, no flying at all under IFR.