There was the VC 10 at Brize, tech for a week or so with various spurious snags listed that sat out on a distant apron with the doors all open.....
They had a frozen blue ice problem on one of the aft bogs and the decided remedy was a palouse air start trolley blowing a miniscule amount of hot air into the valve to melt the blockage, a suitable piece of timber was wedged on the said bog seat and up against a firm bit of trim and warming began..... a loud bang was heard as the said timber departed and a fountain erupted in the aft cabin... seats were changed on the quiet, trim was replaced with other sourced items and everything eventually looked as before...... except the smell, that took a skip load of air freshener and a couple of weeks of circulating air to disperse...