STU Bigzorst - if only phraseology was all this was about!
AMF says
In Class B airspace, the Cherokee was under positive control with a verified VFR assigned altitude 500' above your mate who in turn was established on an ILS, then what's the problem except for his nervousness?
He seems unable or unwilling to grasp the danger in a system that allows a light-single to be vectored directly onto the same point in space as a wide-body heavy, with only a 500' vertical separation. This was at night - and with thousands of city lights cluttering the picture, no clear visual contact was possible. It didn't matter anyhow because (as we both know) this crazy situation is perfectly LEGAL in the US.
The problem is, even if a visual contact is made, it will not prevent the inevitable
RA (not TA, AMF -
RA!) which will occur in this situation. So this is a 100% guarenteed 'evasive action mandated' scenario that is 100% legal and therefore will continue to happen again and again and again.
All it would take is a mis-set altimeter to put these a/c together.
Any RA executed to avoid collision is also likely to require climb or descent - an 'altitude bust' which might lead to another more serious conflict, not to mention injuries to crew or pax.
AMF prefers to reduce the issue to another 'battle of the balls' - a case of mere disgruntlement by the heavy driver who had to share his airspace with a Cherokee.
Thats pretty feeble.