[Norbert Schuchbauer]

Hi Kari,

generally speaking repair is necessary when there is damage to an aircraft. It does not matter if it was inflicted by the enemy or a pilot just crashing the thing. Überhohlung is when an aircraft is to receive scheduled maintenance. This is based either on time flown or number of landings and so on. There are several levels of Überhohlung and it also applies to different equipment installed. An aircraft is still servicable when it goes to Überhohlung. This is not necessarily true for repair.

I do not have a source from WW II as to the definitions. My knowledge is from personal experience as a pilot.

I hope this helps,

Norbert