Actually, the (JAA) regulations are not quite that straightforward or even logical. It is possible to be checked/trained for landings & take offs for recurency training on a device as low as Level B. This is why DLH and Ryanair have both ordered specific Level B 737NG simulators recently.
Conversion take off & landings require Level C/D
The following is from JAR-STD1A.030
Level A - Suitable for: – Crew procedures training. – Instrument flight training. – Transition/conversion training, testing and checking except for take off and landing manoeuvres. – Recurrent training, checking and testing (type and instrument rating renewal/revalidation)
Level B - As for Level A plus: – Recency of experience (three take-offs and landings in 90 days). – Transition/conversion training for take-off and landing manoeuvres – Transition/conversion testing and checking except for take-offs and landings.
Level C - As for Level B plus: – Transition/conversion testing and checking of take- offs and landings for flight crewmembers whose minimum experience level is defined by the Authority.
Level D - As for Level C plus: – Transition/conversion testing and checking of take-off and landings for flight crews, who may be required to meet a minimum experience level defined by the Authority.
Additionally the DGAC in isolation from the JAA/EASA have recently approved an FTD for full type ratings including all manual control handling skills including take off and landings.
At a time when experience levels (especially within the developing world) are not what the used to be, an ‘interesting’ and potentially far reaching development.
At a time when the regulators should be striving for tougher regulations it appears that at least one will now accept an easier solution.