It is not my understanding that the GR24 has been withdrawn but it has been re-written within the updated CAP 747 published during March 2020. The rewrite includes as follows:
3.1.1 Under the provisions of this Generic Requirement (GR), engines that have reached the operating time or calendar time limitation of a recommended overhaul period may continue in service for a further period of operation not exceeding 20% of the recommended operating time or calendar time, whichever occurs first, subject to compliance with a), b), c), d) e) and f).
Note: the 20% extension applies to both the engine hours and also the calendar time. A CAMO ensures that all maintenance has been complied with but will not accept liability. The CAMO will require overhaul and maintenance reports on the engine condition from the aircraft maintenance engineers. The CAMO never decides and does not give permission ever. They only advise the owner whether all is in compliance and remains in line with the current regulations. As with your tax accountant you remain responsible. The CAMO will not of course issue any certificates such as the ARC or any paperwork required of them if things are not correct, again similar to your accountant.
If you are importing an aircraft the new GR24 gives clear advice with regards to what is required of the engine so worth a read.
Last edited by Fl1ingfrog; 3rd Aug 2020 at 18:43.