I used to use MEWPs regularly when I was working in mobile telecoms. My mate was up at about 20m in a picker basket one day and the hydrolic pipe burst spraying fluid everywhere, my mate shouted "it's tipping over!" Soon as he said that it had (basket) almost hit the ground. Lucky for him he jumped out onto grass about 10 ft off the deck. Lucky for me I heard him shout as I was earthing some cables directly under the gantry it crashed into. I was OK but my mate was still shaking like a shitting dog. Picker driver said he'd fixed the hydrolic tubing and added new fluid. Asked my mate if he was OK to go back up, the daft twat. Was a near miss incident and no one was allowed to lift a tool after that nevermind go back up in a picker basket.