The aircraft returned to the airport with serious structural damage and one flight attendant slightly injured. On May 3, 2013, a McConnell AFB, KS (USAF) KC-135R, 63-8877, flown by a Fairchild AFB, Washington aircrew, broke up in flight about eleven minutes after taking off from Manas Air base in Kyrgyzstan, killing all three crew members.[6][7] After investigation, it was determined that a rudder power control unit malfunction led to a Dutch roll oscillatory instability. Not recognizing the Dutch roll, the crew used the rudder to stay on course, which exacerbated the instability, leading to an unrecoverable flight condition.