Airbus Cowling Doors Opening and Closing - duplicate inspection to confirm latching

The number one reason why you need to open both fan cowl doors is to check the IDG oil level, which happens as frequently as once every transit check or perhaps daily. Often this is assigned to the same line engineer. On newer cowlings (2008-2009 era) this was fixed with the inclusion of an IDG access door.

Do NOT let the same mechanic work on all the engines of the plane.