As an ex member of ECMSDF (Electronic Countermeasures Servicing and Development Flight) - a flight of the Bomber Command Development Unit - at Finningley in the mid 60s I well remember the reams and reams of print outs received from 112 SU. The trick was that a team of Clerk Statistics would pore over the print outs, confer with the AEOs and techies and then fix, or otherwise, the individual 'can' in the tail of the said aircraft.
One of the great dramas that we had in those days was Red Steer which kept busting the return springs. Every time it went back to industry for a fix they would supply new 'special' springs. They would be fitted, tested, flown and declared OK for the job. An order would then be placed for thousands of the new springs, all aircraft would be retrofitted and then the 'new' springs would keep busting again. Turns out that the trial springs were actually hand made jobs and the production runs were not up to the same spec. Kept us laughing for years that one!
Ooo er, I really get the heebie-jeebies talking about this stuff which was ever so highly classified in those days.