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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