Downwind left   We left Jersey early Thursday morning, just a few days before Christmas with just the owner in the back of the Cessna 421, but as the trip was not the run of the mill trip for me, Mike one of the club instructors came along with me upfront. First stop was Montpellier to pick up two other passengers then airborne again for Monastir Tunisia. Looking out my side window I noticed the familiar oil leaking out from the top cooling grill of the port engine. It had been there for several weeks and engineers had looked several times but had been unable to pin down the source. The long transit of the Mediterranean at FL190 passed quickly and both Mike and I look forward to an evening at the Royal Hotel Monastir. Soon the north African coast came in view ad we started a slow descent. ATC handed us over to the local Tunis approach control for control passing Tunis and onward to Monastir, not that their instructio...