The US State Department’s spokesperson, Tom Casey, told journalists on Wednesday 3 August that President Yoweri Museveni and the new Sudan Peoples Liberation Army/Movement leader and defacto new Sudan’s first vice-president, Salva Kiir, requested the USA to beef up the investigation with technical assistance.

Casey was responding to a question, which doubted bad weather as the cause of the accident. Casey said, "I reiterate what we said yesterday, which is we have no reason to believe that anything other than bad weather may have contributed to this crash. Museveni has decided to create a panel of three experts to investigate it.

The NTSB is an independent Federal agency charged by the Congress with investigating every civil aviation accident in the US and significant accidents in the other modes of transportation. Since its inception 1967, the NTSB has investigated more than 124,000 aviation accidents and over 10,000 surface transportation accidents.