Regardless if leased or owned, no owner in it's right mind is going to let an expensive, modern asset like a 777 sit on the ground doing nothing for a simple technical fault.
If it helps think of this 777 as capital, say 100 million US dollars. If the cash is yours you can earn interest or dividends on it if you invest it. If you have to borrow it you'll pay interest on it. Either way it doesn't make sense to leave the cash in your mattress, or in the case of 777 in the storage yard.
If there is something technically wrong with the aircraft that requires say 1 million US dollars to fix, you invest that 1 mill, to get your 100 mill asset earning dollars again. If you figure that your typical 777 flight is going to bring in say 300000 US dollars in revenue, you can see that it doesn't take long, a day or two, to make your 1 million back.
Here's a site where you can look up the N-number...
You're right United owns it....
[Edited 2004-12-18 16:59:54]
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