If this was the big end of town, e.g. an airline suffering premature engine failures, the authorities would impose a reduced overhaul time limit and give the operator x number of hours or y months or even years to get it sorted. Maybe impose additional inspections meantime. But they would hardly dare totally grounding the fleet on the basis of a few failures. Even when Boeing suffered the fatal B737 rudder hardover problems some years back, and the later centre fuel tank explosions in both the 747 and 737, fleets did not get grounded. Procedures and inspections were put in place to mitigate the risk.
Halving a Jabiru engine TBO would have the effect of adding about 15 bucks an hour to the cost spread over the life of the engine. Most owners could absorb that or schools could pass it on to their students without too much pain. Provided reasonable notice to comply was given, of course.
This would be far preferable to the kneejerk reaction of virtually grounding the things without notice.
Last edited by Mach E Avelli; 23rd Nov 2014 at 10:08.