We went to Venezuela a few years ago, flew out to a jungle airstrip, canoed to Angel Falls, flew back.
We flew in a C47 (civilian Dak), with a plate inside saying built in 1947.
Some of the party were nervous of flying in it, but to me it was far more exciting than yet another 737 Dumbo.
The airline was the domestic arm of the Venezuelan national carrier, not some tatty old airline, and the reason they were flying it was because it worked.
The pilots were a knarled old veteran and a young guy only in his 20's. I asked him in my dodgy Spanish if he'd rather not be flying jets, he smiled and said no, this was a real aeroplane.
They had one pair of cycling gloves between them, one on his left hand and the other on his right, and it became obvious why - the throttle levers vibrated-about so much that you needed a glove on that hand.
We took off and flew into a wall of cloud, up through it and along for 3/4 hour or so, then the pilot found a hole in the cloud, dived the plane into it and spiralled down really steeply and tightly until we popped-out under the clouds.
Down below was miles of jungle, looking like broccoli, and rivers, and broccoli, and rivers, and more brocccoli and nothing else - no towns, roads, railways, anything to navigate by.
Also there were tepui's, the steep-sided flat-topped mountains (think Conan Doyle 'The Lost World', but without dinosaurs) and that's why we'd spiralled-down so steeply - he could see jungle through the hole in the cloud, so dived down the hole rather than running into one of these tepui's.
We flew about for half an hour or so, didn't find the jungle airstrip, so back up through the cloud and back to the airfield.
Had lunch, tried-again in the afternoon, much the same as before, another spiral dive through the cloud, but this time navigation was better and we found the airstrip, disturbed the kids who were playing football on it and landed.
Got bitten to bits canoeing up to Angel Falls, but the flight was bl**dy excellent !