On the 9 February 2015 deadline for submissions, the KAI/Lockheed Martin team submitted their bid but Korean Air and Airbus Defense failed to, the reason likely being more time needed for preparation.
Pada tenggat waktu pengiriman proposal 9 Februari 2015, tim KAI / Lockheed Martin telah mengajukan penawaran mereka namun Korean Air and Airbus Defense gagal, alasannya kemungkinan akan lebih banyak membutuhkan persiapan.