Working practices re-think
Following the comments from Smarthawk I have had a look at the way I do the maintenance on my fleet, the aircraft do spend about 3.5 days in the hangar to compleat the LAMS annual but as I don't have to allocate the time to a customer I had not been looking at the items already prepaired to enable the minimum of time out of service.
I have a number of parts such as spark plugs, airfliters, brake pads and mainwheels that are ready serviced and so these are just a "part swop" at the time of the check. this cuts the aircraft down time but of course the work on the removed parts is being carried out while the aircraft are in service, the bottom line is that these parts along with the paperwork take about another 1.5 man days to re-work.
I don't think that my manhour estimate is to far adrift from that of smarthawk but one advantage that I have is that I dont have to work around other people in the hangar.