And don't forget the Access Panel Rule.
1) Calculate the required size and optimal location of the panel to allow unhindered access to components.
2) Reduce the panel in size by 20% and move it 8 inches forward or aft, and 5 inches above or below optimal position.
3) Sit back and laugh at the thought of maintenance engineers losing skin, blood and fingernails, and possibly dislocating various joints, whilst attempting to carry out so called routine maintenance tasks.
I always looked on aircraft engineering as being a bit like a Gynecology, except the hole tends to be smaller, further away and on the whole tends to smell better too.......
Wasn't the short sterling bomber designed so the wings would fit in a standard RAF hangar? and also that BEA specified a weird seating capacity for the Viscount ? and when asked after it was built, it turned out they specified it to the seating capacity of their passenger buses in use, makes sense really......