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• Testing, Acceptance and Qualification (Subsystem and its Components)

• Accident Risk Assessment Reports

• Schematics

• Manufacturers

• Flight Heritage

Please provide the Command & Telemetry System status prior to initialization of the pressurization sequence. Please provide the detailed commands executed out of the Command Systems Memory by scripts which were initiated by transmitted commands. Please provide a detailed list of all commands transmitted to the spacecraft (including time of transmission) after communications were not reestablished. Please provide the rationale for sending these commands. In particular, we would like a detailed presentation of the following:

• Command History

• State of Command Storage Memory

• Purpose of Each Command

• State of Spacecraft from Telemetry (On/Off, Temperature, Voltage, etc.)

• For each operation, include:

a. Number of times previously attempted (exactly or modified sequences)

b. Anomalies experienced

c. How simulated on ground (fidelity of simulation)

We postulate the following failure modes which could have caused loss of transmission or failure to recover communications:

• Electrical power system failure

• Transmission failure

• Loss of overall control

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