How much of the problem is due to the fact that the gliders being of composite sandwich construction it is only possible to establish how well a repair has been done is by X-raying it? Even then you can't tell if the correct resin was used, and if it was in date at the time of use. A one off repair may be ok, but given the amount of use and perhaps abuse that these airframes have seen, a series of adjacent repairs may be an accident waiting to happen?
Rather than try and get to grips with 25+ years of inadequately recorded repairs, perhaps it is time to pension off the Grobs and go for new AS-K21s?
My understanding is the Air Cadets tried the K21 but they went for the Grob 103 as Schleicher were so busy building K21s for civil clubs that they could not accommodate the Air Cadet order and/or were unwilling to make requested modifications to their proven product.
Last edited by Mechta; 27th Jul 2014 at 11:25.
Reason: Grammar