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5. Loss of approximately 30 000 pounds of payload capability
6. Two independent cues of impending catastrophic failure are required, and
7. The Orbiter is always lost.

VI. PROGRAM ACTIONS

A. Premise

The program actions proposed are based on the premise that the Space Shuttle Program must continue its previous first stage design philosophy and be successful. The Space Shuttle Program's philosophy is to assure first stage reliability through design and certification to preclude failures, since none of the possible options for improvements provides protection for all the failure cases. This is the only philosophy that maximizes the recovery of the Orbiter while minimizing crew risks and maximizing system performance.

B. Program Actions

1. Evaluate the options and utility of providing entry bail out in the current Orbiter design. (This enhances crew survivability for the contingency cases that result in a water ditching.)

2. Evaluate the options and utility of augmenting aborts within the current Space Shuttle design and operating envelopes for failures such as loss of two SMME's.

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