redtail, I sympathise with you about the sort of problem you see yourself facing. You mention two type of people, one is dangerous the other is lazy. If you don't take action against the former and an accident happens you will kick yourself, it is not professional to turn a blind-eye. Problem is, what do you do, especially as you have to work with this person? I have found in the past that it depends on the level of the person within the organisation that is causing you problems. If the person is above me I find the direct approach is the best pointing out that their license does not give them special priveleges over mine to allow them to sign-off work they have not done. Mention that you will not sign a final CRS for the aircraft concerned if this pactice takes place and that you are duty bound to report it if the practice continues. This has proved successful for me in the past. If the person is one whose work you certify then you simply refuse to do so untill it is of the required standard. This procedure rarely causes long term problems as the person gets used to your standards. Now comes the hard part, this is when the person concerned is a direct colleague at the same level as yourself. One method is to tell the person face to face that you are concerned, but I have rarely had success with this. Another method is to report your concerns to your department manager stating clearly your reasons. I feel that in doing this you have met your obligations and should be able to sleep well. If this causes problems for your colleague take comfort that it is far less than the problems which could be faced by relatives of dead passengers or crew. Hope this is of some help.Regards, trapper.