Differences in record-keeping might affect general stats like that. If airline A makes a tech log entry every time a computer is reset and Airline B just resets it and makes no record then one looks as of it had computer maintenance problems while the other has none.
An engineering culture that says "We've done it this way on every other Scruggs Aerospace jet we've ever owned so we'll do the same with this one" is going to turn up different stats to the company that says, "lets see if there's a new/partiular way of doing it on this plane".
Just a couple of ideas that might bring up differences. There will be many other perfectly good ones too. Not sure you can read anything into such a fuzzy statement anyway.
Last edited by Agaricus bisporus; 23rd May 2013 at 12:13.