Department of the Air Force Report, 1996

This final report, dated September 10, 1996, was prepared by the Research Triangle Institute for the Department of the Air Force's 45th and 30th Space Wing safety offices. Titled Modeling Unlikely Space-Booster Failures in Risk Calculations, it shows how rare Mode-5 failures, in which a rocket veers well off its intended flight line, are modeled in the DAMP risk-analysis program. An appendix lists Atlas, Delta, Titan and Thor launch and failure histories through August 1996.

From the source:Release of 2026-05-08 Incident: 9/10/96, N/A. This report describes the Modeling of Unlikely Space-Booster Failures in Risk Calculations, documenting historical launch failure modes and recommending corrective actions to address them using novel modelling techniques.

228. Koreasat, 5 Aug 95, Response Mode NA, Flight Phase 1 and 5: One of three air-
ignited strap-on GEMs did not separate because of a malfunction in the separation
explosive transfer system. Failure to drop a GEM motor resulted in depletion of
second-stage propellants. Although perigee was close to nominal, the apogee was
3,450 nm below the planned value and far outside the 3-sigma limits.
9/10/96 145 RTI