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-C26- [[2 column table] FLT EFFECTIVITY [[Abort enhancement Chronology]] | FLT EFFECTIVITY 1. CONTINGENCY ABORT SOFTWARE | STS-1 - SOFTWARE SEQ - ET SEPARATION - PROPELLANT DUMPING - SE ROLL CONTROL 2. FAST SEP | STS-1 3. TAL | STS-3 4. FIRST STAGE ENGINE OUT | STS-8 5. ADAPTIVE GUIDANCE TARGETING | STS-8 6. EXPANDED ABORT PROPELLANT DUMPING - MPS RTLS/TAL POST MECO |STS 61-B - OMS TAL/OPS-3 (O1-7C) | STS 61-F - ARCS TAL/OPS (O1-6 PATCH) | STS 51-I - FRCS RTLS/TAL (O1-7C) | TBD* - CENTAUR PROP (O1-7C) | STS 61-F - OMS/RCS 1'CNECT MODS (O1-7) | STS 61-C 7. DIAL-A-RUNWAY (O1-6) | STS 51-G 8. DIAL-A-TARGET (O1-7) | STS 61-C 9. ABORT GUIDANCE IMPROVEMENTS (O1-7) | 61-C *REQUIRES EXECUTION OF FLIGHT TESTS PRIOR TO USE. Figure C8 Abort Enhancement Chronology