Edward Sirait, president of the budget airline, told reporters that the plane had also encountered a technical problem on its previous flight that was subsequently resolved by engineers. NBC
Correct. From the AvHerald article:
"The airline reported the aircraft encountered a technical problem, the crew was about to return to Jakarta.
There had also been a technical problem on the previous flight, this problem however was fixed (editorial note: the aircraft remained on the ground in Jakarta over night for 8 hours prior to the accident flight, there is a write up circulating in the Internet only claiming the aircraft had experienced unreliable airspeed and altitude on the previous flight, the captain's instruments were identified faulty, control was handed to the first officer and the flight continued to destination below RVSM airspace - we removed this write up repeatedly from our reader comment board because of its
unverified nature and because it supposedly contains names of flight crew). The captain had accumulated 6,000 hours of total flight experience, the first officer 5,000 hours."