From todays SCMP on the mainland Cathay chartered aircraft:
Four of the chartered planes are from China Southwest. A China Southwest plane crashed into a field in February 1999 killing all 61 people on board.
Two of the others are from Air China, which has had two near-misses in the past three years. One near-miss, in 1999, involved a pilot pointing to the wrong place on a map, sending his jumbo jet into the path of a Korean Air plane, which had to change course to avoid it. The same year, an Air China cargo jet took a wrong turning after landing in Chicago, narrowly missing a packed passenger flight that was taking off.
A plane belonging to a third airline, China Eastern, which is lending one aircraft to Cathay, made an emergency landing in Shanghai on Monday when a cockpit window fragmented on the way from Shijiazhuang to Guangzhou.
The other airlines leasing planes to Cathay - China Northwest and China Northern, have a clear safety record over the past three years.