The first is for an avionics repair package for 4,000 line replaceable multi-mode weather radars on the service's fleet of 417 KC-135s.
The contract is for one year with three one-year options.
"This historic contract extends our successful relationship with the Air Force for upgrading and maintaining the KC-135," said Scott Gunnufson, vice president and general manager of Service Solutions for Rockwell Collins.
"We are absolutely committed to continuing our track record of on-time, on-budget performance with this program."
The second contract, worth $4.8 million, was issued by the Air Force's Air National Guard and is for service and support of its KC-135 Pacer CRAG avionics equipment.
Under the award, Rockwell Collins will upgrade the PACER CRAG avionics on KC-135s in a commercial, off-the-shelf modification program that eliminates the need for a navigator on most missions.