Worst case of selected aircraft not reachable (as per samples) can be:

a) occurred in an accident and is not assumed to be put back into efficiency with timeframes compatible with the ACAM plan;

b) due to unforeseen operational needs, the subject of a rescheduling of the relevant operational deployment plan (e.g. case of ramp survey) or slots of the related scheduled maintenance intervention (e.g. in-depth case);

c) subjected to the hypothetical maintenance work due to unexpected reprogramming of the maintenance slots by the originally planned maintenance company;

d) is removed from fleet due to deletion of activity by the owner/operator;

e) be transferred to another register.

In such cases, the Inspector ENAC in charge may assess in conjunction with the owner/operator of the aircraft whether to reschedule the intervention by keeping the selected registration mark or replace with another aircraft falling within the same characteristics (same operator, same type, same operating environment), notifying (internal) the ACAM Committee.