The Terrible Odds

• If there is a wrong way to do something, that is the way it will be done

and

Murphy’s Law

Murphy’s Law

Note

Torque all nuts to 55 inch pounds + - 1 in. lb.

The Terrible Odds

Just how many ways can an error be made with just eight washers and eight nuts?

Murphy’s Law• There are 16 components (8 nuts

& 8 washers) on this gear leg• Each component can be installed

only one way correctly• Eight crews each change one nut

and one washer next to the nut

3) How many totaltotal ways can the job be done incorrectly?

2) How many different ways can eacheach crew make an error?

1) Would this be considered a Low, Medium or High risk job?