The incident occurred on Wednesday at the airport in the city of Anqing in eastern China's Anhui province, according to authorities, and was at least the second such report this year of a safety scare caused by a coin-tossing elderly Chinese.
Fellow passengers reported that coins were tossed at the engine of a Lucky Air jet during boarding, and ground crew later found coins lying on the tarmac next to the plane, according to various statements by the airline, airport authorities, and transport police.
The flight, which was to depart Anqing for the city of Kunming in southwestern China, was grounded overnight as a safety precaution. The passengers were subsequently flown to Kunming the following morning, authorities said.
In June, a superstitious 80-year-old woman delayed a China Southern Airlines flight at Shanghai's Pudong International Airport for nearly six hours after she tossed nine coins at the engine from the tarmac while boarding, with one nestling inside.