NAC Charter (NTN, Johannesburg Lanseria) is set to operate one of its three E145s, ZS-DFA (cn 145165), on behalf of the United Nations Humanitarian Air Service (UNO, Brindisi). According to the ch-aviation aircraft database, the twinjet had previously seen action with Equatoguinean regional operator, Punto Azul (Malabo).

The United Nations Humanitarian Air Services (UNHAS) is a UN common service managed by the World Food Programme (WFP) used in support of aid delivery and development programmes of the humanitarian community during and after emergencies.

Founded in 1946, NAC Charter has provided air support missions on behalf of Shell, BHP Billiton, and Hart Aviation Services with an E120, ZS-POE (cn 120137), also in use for the United Nations.