Requirements:

•  Hold at least a current PPL in the Category of aircraft appropriate to the rating sought.
•  Be proficient in the English Language
•  Receive and log ground training from an authorized instructor or accomplish a home
     study or an course of training on the in FAR part 61.65(b) described areas of aeronautical knowledge.
•  Receive a logbook or training record endorsement from an authorized instructor,
     certifying that the person is prepared to take the required knowledge test.
• Receive and log training on the areas of operation described in FAR part 61.65 (c) in a
     flight training device, a flight simulator or an aircraft that represents the aircraft of the
     category on which this rating is sought.
• Receive a logbook or training record endorsement from an authorized instructor
     certifying that the person is prepared to take the required practical test.
• Pass the required knowledge test (LaserGrade or CATS exam), unless the candidate
     already holds an instrument rating for another Category of aircraft then actually sought.
• Pass the practical test (checkride), on the airplane or helicopter or powered-lift
     appropriate to the rating. This test can be conducted on a flight simulator under certain
     conditions. See FAR part 61.65(a)(8)(ii)

Aeronautical experience requirements:

• 50 hrs of cross county time as PIC, of which at least 10 hrs in an instrument flight equipped airplane.
• 40 hrs of actual or simulated instrument time, of which at least 15 hrs of instruction from an authorized instructor and 3 hrs of instrument rating training from such instructor within the last 60 days preceding the practical test, in preparation for the practical test.
• At least one cross country flight of 250 miles along airways or ATC directed routes under IFR with an instrument approach at each airport and a total of 3 different kind of instrument approaches with the use of navigation systems.

* See FAR part 61.65(d)(1) and (2)(i), (ii) and(iii) for the detailed explanation.

Practical training in Antwerp Belgium:

•  20 hours of ground instruction,
•  30 hours Simulator
• 15 hours of airborne instruction in a TAA

Practical training in the US:

• 15 hours of airborne instruction in a TAA
• the checkride (1-1.5 hours)

TAA is the term for Technical Advanced Aircraft. It means basically that the aircraft is glass cockpit equipped, in our case G1000.