Originally Posted by
oggers
Despite suggestions it may be kosha in other countries, nobody has come up with a single reference to back that opinion. So the answer is still no.
Here's one. Transport Canada AIM RAC 9.3.
A clearance for an approach may not include any intermediate altitude restrictions. The pilot may receive this clearance while the aircraft is still a considerable distance from the airport, in either a radar or non-radar environment. In these cases, the pilot may descend, at his/her convenience, to whichever is the lowest of the following IFR altitudes applicable to the position of the aircraft:
(a) minimum en route altitude (MEA);
(b) published transition or feeder route altitude;
(c) minimum sector altitude (MSA) specified on the appropriate instrument approach chart;
(d) safe altitude 100 NM specified on the appropriate instrument approach chart;
or
(e) when in airspace for which the Minister has not specified a higher minimum, an altitude of at least 1 000 ft above the highest obstacle within a horizontal radius of 5 NM (1 500 ft or 2 000 ft within designated mountainous regions, depending on the zone) from the established position of the aircraft.
Doesn't get much clearer than that.