Just to second that it seems autopsies are being done, just not on every body. Which is understandable given the circumstances and in some cases pointless.
AirAsia flight QZ8501: Another 12 bodies sent to Surabaya hospital for identification - South-east Asia News & Top Stories - The Straits Times
Autopsy will be performed on some of the bodies to support an investigation into the crash, Xinhua news agency quoted head of the Disaster Victim Identification (DVI) center Budiono as saying.
"Some of them will be autopsied to find out the cause of the accident," he said at the Police Hospital Bhayangkara in Surabaya, the provincial capital of East Java.
"We will conduct autopsy at least on bodies of the pilot, co-pilot,'' he was quoted as saying.