In my oppinion computerising the manuals can be a great help.
I have a small company doing all sorts of stuff about aviation safety and training, including manuals.
I have written all sorts of manuals, mainly operations manuals, for 28 different commercial air transport operators and some of them have wanted the manuals on computer media as well as on paper.
For use on computers I usually deliver in Adobe Acrobat or in HTML so they can be viewed in an internet browser. Both these methods have the advantage that you can include powerful search engines.
Those of my customers that use computer media have their manuals on their intranets and distribute them to crews on CD-ROM.