I have received a number of requests to collect my downtime system posts in a single document, so I have put one together, which collates the main information. It summarises the content from the following posts, with some modifications:
The main changes from the original posts are the omission of some of the background discussion, a minor revision of the General Events Table and expansion of the downtime example I gave.
You can download the document from here. As usual, I have made PDF and Word versions available. The tables are also available in Excel, including a functioning Downtime Record Sheet.
I have some further thoughts to share on downtime, so I may return to this subject in future, if there is interest.