On 10 Mar 2016, AirAsia X Flight 233 (Sydney to Malaysia) ended up in Melbourne after navigational error (incorrect by 11,000 km). Investigations revealed a litany of failures by the airline and crew, resulting in a nightmare from hell for travellers.
On 5 May 2017, 5 people were injured after an AirAsia X Flight D7 237 (Taipei to KL) encountered severe turbulence mid-flight from Taipei to Kuala Lumpur. Cabin crew were panicking as seen in leaked video.
On 25 Jun 2017, AirAsia X Flight D7 237 (Perth to KL) had technical issues, resulting in the entire aircraft to shake violently (see videos), and had to turn back to make an emergency landing at Perth.
Not forgetting the major tragedy on 28 Dec 2014, when Indonesia AirAsia Flight 8501 (QZ8501/AWQ8501) plunged into the Java sea killing all 155 passengers and 7 crew on board.
I’ll only recommend flying AirAsia if you have high tolerance levels.