1987 Event 4th full-duration test firing of redesigned SRB motor 1985 Event STS-61-C scrubbed at T -13s because of SRB auxiliary power problem 1983 Event STS-9 vehicle moves to Vandenberg AFB due to SRB nozzle problem 1979 Event 1st space shuttle SRB qualification test firing; 122 seconds 1978 Event Thiokol conducts 2nd test firing of space shuttle's SRB 1976 Event Thiokol conducts 2-minute firing of space shuttle's SRB at Brigham, Utah
