Standard of RT in USA

[beardy]

When a controller wishes a pilot to descend with the ILS glidepath from a level which is above the published level that intercepts the ILS/MLS glidepath at the Final Approach Fix, the controller may use the following alternative form of phraseology.

When established on localiser runway 28, descend on the glidepath QNH 1011, BIGJET 347

Or

or when the aircraft is already established on the localiser:

Descend on the glidepath, QNH 1011, BIGJET 347


BUT:

When a controller has issued a descent instruction to the level that coincides with the published level that intercepts the ILS/MLS glidepath at the Final Approach Fix, or to a lower level when allocated in accordance with the Surveillance Minimum Altitude Chart, the controller may clear the pilot for the ILS/MLS approach

Simple really. The change came in to useage last year. Source CAP 413