I wouldn't argue with you Moving, as I can see your frustrations. However, I can assure you that Dragonair and CX aircraft are both properly maintained. In fact, they are maintained by the very same MRO. Just a little info on how an aircraft is released to service. Every aircraft has an MEL (minimum equipment list). It states the "go" and "no go" items for a particular aircraft type. For example, the aircraft can be released to service and be certified as airworthy even with the APU inoperative but with penalty. It could be reduced load or any other which is clearly defined in the MEL. Bottomline is, the aircrft still flies. If it falls on the "no go" category, then either it gets fixed or the aircraft stays on ground. This is where the flight scheduler steps in. His duty is to minimize the delays. If a flight gets delayed, then the next flight leg will also be delayed. So he switches one aircraft to take the flight of the one that was delayed and find another one to take the other flight, and so on until every flight is again on time. What helps CX to be on time most of the time is the number of fleet that it has. Switching more than a hundred aircraft is easier than doing the same with a fleet of less than fifty.