I think Gibas's 4 points should be essential reading for post holders. In between the 'ideal world' of JT "A prudent operator will do something along the following lines" and the rose-tinted Rainboe's "knowing that someone has done the paperwork beforehand to ensure you will meet climb requirements!" lie a raft of companies with less than perfect performance assessments. We all know that some companies do not follow EUOPS requirements in fully surveying OEI take-off routes. The chances of a thorough look at OEI g/rounds are slimmer. I know of one OEI g/a in a large British airline that had not been thought about. As gibas says, it is encumbent on crew to 'close the gap' and to be aware of any possible obstacle/s which may have been overlooked by others. Obviously the lower the g/a altitude the closer one gets to the OEI take-off problems until the 'baulked landing' g/a mentioned by gibas becomes a significant consideration, as in SZG or MRS.