As a likely mug for these things - I'll have a stab at it...
Airworthiness - from design and manufacture to delivery (entry into service) to the customer - To ensure the aircraft is capable of sustaining the designed performance parameters without hazarding life property or the environment and to support the integrity of that product throughout its life cycle.
Continued Airworthiness - from entry into service to permanent withdrawal from service - all of the processes ensuring that, at any time in their operating life, all aircraft comply with the airworthiness requirements in force and are in a condition for safe operation.
Serviceable - a condition for safe operation of an aircraft that may include some loss of levels of redundancy from safety critical systems without seriously hazarding life property of the environment
Terms that cover civil aircraft...unless you can better them? (which I doubt!)
Last edited by Rigga; 17th May 2011 at 22:31.
Reason: changed to "..some loss..."