oversight category from a 1 to a 2 because of "serious concerns" over safety. This means it views Indonesia's civil aviation authority as failing to oversee air carriers in accordance with minimum international standards. As a direct result, the US Embassy in Jakarta issued a warning to all American citizens flying in or out of Indonesia to avoid using Indonesian airlines, and instead use international carriers with better safety reputations. This was followed on 28 June 2007 by the addition of all Indonesia's airlines, none of which flew to Europe at the time, to the List of air carriers banned in the EU; the ban was lifted for flag carrier Garuda Indonesia and three smaller airlines in 2009, and by 2018 all Indonesian airlines were once again permitted to fly to the EU. Budhi Mulyawan Suyitno, Director-general of civil aviation at the Indonesian transport ministry, responded by saying that he felt Indonesia had made the improvements required by the EU. A blanket ban on all Indonesian airlines flying to the United States was imposed in 2007, and lifted in 2018. On 18 March 2008, shortly after a further accident in Batam, the airline's Air Operator's Certificate was suspended by the Indonesian government. Three months later, the air certificate was revoked, and the airline ceased operations and filed for bankruptcy. Flight 172 On 21 February 2007, just 51 days after the loss of Flight 574, Flight 172, an Adam Air Boeing 737-300 aircraft (registration PK-KKV) flying from Jakarta to Surabaya had a hard landing at Juanda International Airport. The incident caused the fuselage of the plane to crack and bend in the middle, with the tail of the plane drooping towards the ground. There were no reports of serious injuries from the incident. As a result, six Adam Air 737s were grounded awaiting safety checks. Adam Air described this as "harsh punishment" for an accident it blamed on poor weather conditions, but Vice-president Kalla had said that all Boeing 737-300s should be checked. Alleged cockpit voice recording leakage In early August 2008, a five-minute-38-second digital recording allegedly retrieved from the plane's cockpit voice recorder was widely circulated on the Internet and transcribed by the media. The recording, which had been publicly distributed through chain e-mails, begins with what is believed by some to be a conversation between pilot Refi Agustian Widodo and co-pilot Yoga Susanto before the crash. Approximately two minutes