Not an answer to the original question, but itīs topic related...and please excuse my bad english
(excerpt of a summary of the IFALPA conference in Tokyo, 7. 11. April 2000)
PROVISION OF MINIMUM VECTOR ALTITUDE CHARTS -
This Policy is currently subject of a working group under the lead of Frank Mueller-Nalbach (VC). It will be recommended that on airfields on which radar-vectored descents below MSA are common, flight crews will be provided with so-called "Minimum Radar Vector Altitude (MRVA) Charts". This way situation awareness can be enhanced by continous crosschecking your position.
Since it is the "worst case" of obstacles in the periphery of 20 NM around a navigation fix, radar controllers may disregard the MSA due to their exact knowledge of the location of any obstacles and the position of the approaching aircraft. However, it is important (e.g. in the event of a communication failure) that the flight crew knows the minimum altitudes in their approach path, so the MRVA charts are considered a necessity.
The working group will work on the policy to have it ready (including a proposed presentation of the MRVA charts) for the next IFALPA conference in the year 2001.
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You canīt make it foolproof.
Fools are too inventive.