eeerrrhhh - maintenance records "back to birth"?
EASA requires the following:
M.A.614 Maintenance records
...
(c) The approved maintenance organisation shall retain a copy of all maintenance records and any associated maintenance data for three years from the date the aircraft or aircraft component to which the work relates was released from the approved maintenance organisation.
I wouldn´t want to see ALL maintenance records of a 40 years old DC-9...?!
Regards, J.V.