I'm reminded of the jet that made an emergency diversion into Cairo. The spares were held in customs until a wodge of moolahs greased the palm of the customs official in exchange for a signature. It was cheaper to do that than to continue to pay bills for the crew stuck there. The air attache's office advised payment, which was paid under a 'misc expenses' voucher heading. It would have made for an interesting reaction if the paperwork revealed that a 'bribe' had been paid.
When in Rome...