STBYRUD,
Doc 4444 - PANS ATM § 8.6.5.2 When vectoring an IFR flight and when giving an IFR flight a direct routing which takes the aircraft off an ATS route , the controller shall issue clearances such that the prescribed obstacle clearance will exist at all times until the aircraft reaches the point where the pilot will resume own navigation. When necessary , the relevant minimum vectoring altitude shall include a correction for low temperature effect.
Note 2.- It is the responsibility of the ATS authority to provide the controller with minimum altitudes corrected for temperature effect.
Let's stick to the facts, shall we? Merry Xmas.
