Originally Posted by
madlandrover
That's perhaps the most important bit. MATZ "clearances" aren't mandatory but ...
That's rather the point - for a civil pilot, a MATZ Penetration Service can only ever issue an "approval" - the controlling ATSU has no authority to issue a "clearance" to a civil pilot. It follows therefore that entry to the non-ATZ part of a MATZ cannot be denied to a civil aircraft, unlike military aircraft to whom MATZ instructions are mandatory.
Rather a dog's breakfast ...
For civil pilots,
UK AIP ENR 2.2 pages 2-2-3-1 to 2-2-3-3 contain all the details.
In particular, altimeter settings normally used within a MATZ are described in para 2.6 on page ENR 2-2-3-2.
JD
