Famous words from a very British mouth dripping with sarcasm....."GPS....that Yank DOD Thing? We might have to buy it (the Nigerian CAA had mandated all aircraft be fitted with it to operate in Nigeria.) but when it goes U/S we will not repair it.".
A few trips with it and nothing more was heard about the Yank DOD and it did get repaired....but they never bought the Nav Data update while I was there.