"About a year later, '947 was lined up for departure from runway 07 at Farnborough when the crew reported they had a 'problem' and were evacuating the aircraft; as they did so, the port undercarriage collapsed allowing the still turning port prop to strike the ground and break off and the wingtip to contact the ground which produced 'wrinkling' in the skin of the port wing."
One of the Faireys Dakotas was landing at Birmingham - luckily he choose the grass strip that was available. The undercarriage failed but the pilot puled her off and got back into the circuit with one wheel dangling and an almighty vibration and noise. The Tower informed him that they'd dragged the runway for 100 yards and it looked as it it was the prop that had hit the ground. After 10 minutes of circling they found it flew OK and the engine seemed fine so they headed back to White Waltham where they were able to land safely. Somewhere I have a picture of the prop - the blades are bent back by about 6 inches from the end (!!) . "better fuel consumption but too much noise" was the conclusion.