Ding Shilu (L) tests the engine of his home-made aircraft before conducting a test flight on the outskirts of Shenyang, Liaoning province, August 6. 2013. Ding, a 65-year-old migrant worker, spent around 2,000 yuan ($327) to build this 5-metre-long, 4.5-metre-high plane using components from motorcycles and electric bicycles. Ding failed his fourth test flight on Tuesday since he started his project four years ago, local media reported.