E4
Approval
This
approval gives the organisation the authority to make an application
to the CAA for an aircraft's initial permit-to-fly. For a
new type this can be a very long process as it involves researching
the aircraft's safety record, fatigue records, overhaul processes
etc.
The
result of the process is a design report to the CAA that
describes the findings. This may take up to 2 years for
a type that has never been on the British register previously.
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