{
  "spacecraft_verification_checklist": {
    "generation_date": "2026-02-05T18:41:29.641416",
    "version": "1.0",
    "total_verification_time_minutes": 1410,
    "estimated_duration_days": 3,
    "critical_systems_count": 3,
    "systems": {
      "propulsion": {
        "system_name": "Propulsion System",
        "criticality_level": "Critical",
        "personnel_responsible": [
          "Propulsion Engineer",
          "Test Director",
          "Safety Officer"
        ],
        "total_duration_minutes": 255,
        "prerequisite_checks": [
          "Fuel loading complete",
          "Ground support equipment verified",
          "Safety zones established"
        ],
        "verification_steps": [
          {
            "step_id": "PROP-001",
            "description": "Verify main engine thrust output",
            "method": "Static fire test",
            "tools_required": [
              "Thrust stand",
              "Load cells",
              "Data acquisition system"
            ],
            "duration_minutes": 120,
            "pass_criteria": "Thrust within \u00b12% of rated value for 60 seconds",
            "fail_threshold": "Thrust deviation >2% or unstable burn",
            "verification_status": "PENDING"
          },
          {
            "step_id": "PROP-002",
            "description": "Check propellant leak detection",
            "method": "Pressure decay test",
            "tools_required": [
              "Pressure gauges",
              "Helium leak detector",
              "Soap solution"
            ],
            "duration_minutes": 45,
            "pass_criteria": "No detectable leaks >1x10^-6 atm-cc/sec",
            "fail_threshold": "Leak rate exceeds specification",
            "verification_status": "PENDING"
          },
          {
            "step_id": "PROP-003",
            "description": "Verify thruster valve response time",
            "method": "Actuation timing test",
            "tools_required": [
              "High-speed camera",
              "Valve controller",
              "Timing system"
            ],
            "duration_minutes": 30,
            "pass_criteria": "Valve response <100ms \u00b110ms",
            "fail_threshold": "Response time >110ms or inconsistent",
            "verification_status": "PENDING"
          },
          {
            "step_id": "PROP-004",
            "description": "Test propellant tank pressure regulation",
            "method": "Pressure regulation test",
            "tools_required": [
              "Pressure transducers",
              "Regulator test rig",
              "Data logger"
            ],
            "duration_minutes": 60,
            "pass_criteria": "Pressure stability \u00b10.5% of setpoint",
            "fail_threshold": "Pressure oscillations >1% or drift >2%",
            "verification_status": "PENDING"
          }
        ]
      },
      "life_support": {
        "system_name": "Life Support System",
        "criticality_level": "Critical",
        "personnel_responsible": [
          "Life Support Engineer",
          "Environmental Systems Tech",
          "Medical Officer"
        ],
        "total_duration_minutes": 450,
        "prerequisite_checks": [
          "System leak check complete",
          "Sensor calibration verified",
          "Emergency protocols reviewed"
        ],
        "verification_steps": [
          {
            "step_id": "LIFE-001",
            "description": "Verify oxygen generation system",
            "method": "Closed-loop test",
            "tools_required": [
              "O2 sensors",
              "Flow meters",
              "Pressure gauges",
              "Gas analyzer"
            ],
            "duration_minutes": 180,
            "pass_criteria": "O2 generation 0.84kg/day \u00b15%, purity >99.5%",
            "fail_threshold": "Generation rate <79% or purity <99%",
            "verification_status": "PENDING"
          },
          {
            "step_id": "LIFE-002",
            "description": "Test CO2 scrubbing efficiency",
            "method": "Contamination test",
            "tools_required": [
              "CO2 sensors",
              "Flow meters",
              "Timer",
              "Test gas mixture"
            ],
            "duration_minutes": 90,
            "pass_criteria": "CO2 removal >95% at 4% input concentration",
            "fail_threshold": "Removal efficiency <90% or saturation time <50% of spec",
            "verification_status": "PENDING"
          },
          {
            "step_id": "LIFE-003",
            "description": "Verify atmospheric pressure control",
            "method": "Pressure regulation test",
            "tools_required": [
              "Barometric sensors",
              "Control system interface",
              "Data logger"
            ],
            "duration_minutes": 60,
            "pass_criteria": "Pressure maintained at 101.3kPa \u00b11kPa",
            "fail_threshold": "Pressure excursions >2kPa or control oscillations",
            "verification_status": "PENDING"
          },
          {
            "step_id": "LIFE-004",
            "description": "Test water reclamation system",
            "method": "Water quality analysis",
            "tools_required": [
              "Water quality tester",
              "Flow meters",
              "Contamination sensors"
            ],
            "duration_minutes": 120,
            "pass_criteria": "Water recovery >90%, potable quality per NASA standards",
            "fail_threshold": "Recovery <85% or quality exceeds contamination limits",
            "verification_status": "PENDING"
          }
        ]
      },
      "navigation": {
        "system_name": "Navigation System",
        "criticality_level": "High",
        "personnel_responsible": [
          "Navigation Engineer",
          "GNC Specialist",
          "Flight Dynamics Analyst"
        ],
        "total_duration_minutes": 315,
        "prerequisite_checks": [
          "Alignment procedures complete",
          "Reference systems calibrated",
          "Ephemeris data loaded"
        ],
        "verification_steps": [
          {
            "step_id": "NAV-001",
            "description": "Verify star tracker accuracy",
            "method": "Celestial observation test",
            "tools_required": [
              "Star tracker simulator",
              "Known star catalog",
              "Position reference"
            ],
            "duration_minutes": 90,
            "pass_criteria": "Position accuracy <0.001\u00b0, identification rate >99%",
            "fail_threshold": "Position error >0.002\u00b0 or ID rate <95%",
            "verification_status": "PENDING"
          },
          {
            "step_id": "NAV-002",
            "description": "Test inertial measurement unit (IMU) drift",
            "method": "Static drift test",
            "tools_required": [
              "IMU test rig",
              "Temperature chamber",
              "Vibration isolation table"
            ],
            "duration_minutes": 120,
            "pass_criteria": "Gyro drift <0.1\u00b0/hr, accelerometer bias <100\u03bcg",
            "fail_threshold": "Gyro drift >0.2\u00b0/hr or accelerometer bias >200\u03bcg",
            "verification_status": "PENDING"
          },
          {
            "step_id": "NAV-003",
            "description": "Verify GPS receiver functionality",
            "method": "Signal simulation test",
            "tools_required": [
              "GPS simulator",
              "Attenuator setup",
              "Time reference"
            ],
            "duration_minutes": 60,
            "pass_criteria": "TTFF <60s, position accuracy <10m, tracking >8 satellites",
            "fail_threshold": "TTFF >120s or accuracy >20m",
            "verification_status": "PENDING"
          },
          {
            "step_id": "NAV-004",
            "description": "Test navigation filter convergence",
            "method": "Trajectory reconstruction test",
            "tools_required": [
              "Navigation processor",
              "Test trajectory data",
              "Truth reference"
            ],
            "duration_minutes": 45,
            "pass_criteria": "Convergence time <5min, steady-state error <100m",
            "fail_threshold": "Convergence >10min or steady-state error >500m",
            "verification_status": "PENDING"
          }
        ]
      },
      "communication": {
        "system_name": "Communication System",
        "criticality_level": "High",
        "personnel_responsible": [
          "Communications Engineer",
          "RF Specialist",
          "Ground Station Operator"
        ],
        "total_duration_minutes": 225,
        "prerequisite_checks": [
          "Antenna deployment verified",
          "Frequency coordination complete",
          "Link budget analysis approved"
        ],
        "verification_steps": [
          {
            "step_id": "COM-001",
            "description": "Verify transmitter power output",
            "method": "RF power measurement",
            "tools_required": [
              "Power meter",
              "Spectrum analyzer",
              "Directional coupler",
              "Load"
            ],
            "duration_minutes": 45,
            "pass_criteria": "Power output within \u00b11dB of specification",
            "fail_threshold": "Power deviation >2dB or spurious emissions >-40dBc",
            "verification_status": "PENDING"
          },
          {
            "step_id": "COM-002",
            "description": "Test receiver sensitivity",
            "method": "Signal-to-noise ratio test",
            "tools_required": [
              "Signal generator",
              "Noise source",
              "BER tester",
              "Attenuators"
            ],
            "duration_minutes": 60,
            "pass_criteria": "Sensitivity meets spec at BER <10^-5",
            "fail_threshold": "Sensitivity degradation >3dB or BER >10^-4",
            "verification_status": "PENDING"
          },
          {
            "step_id": "COM-003",
            "description": "Verify antenna pointing accuracy",
            "method": "Antenna pattern measurement",
            "tools_required": [
              "Antenna range",
              "Positioner",
              "Field probe",
              "Test transmitter"
            ],
            "duration_minutes": 90,
            "pass_criteria": "Pointing accuracy <0.5\u00b0, beamwidth within spec",
            "fail_threshold": "Pointing error >1\u00b0 or pattern distortion >3dB",
            "verification_status": "PENDING"
          },
          {
            "step_id": "COM-004",
            "description": "Test data link throughput",
            "method": "End-to-end data test",
            "tools_required": [
              "Data generator",
              "Protocol analyzer",
              "Error counter",
              "Timing equipment"
            ],
            "duration_minutes": 30,
            "pass_criteria": "Throughput >95% of rated capacity, error rate <10^-6",
            "fail_threshold": "Throughput <90% or error rate >10^-5",
            "verification_status": "PENDING"
          }
        ]
      },
      "safety_mechanisms": {
        "system_name": "Safety Mechanisms",
        "criticality_level": "Critical",
        "personnel_responsible": [
          "Safety Engineer",
          "Emergency Systems Tech",
          "Mission Safety Officer"
        ],
        "total_duration_minutes": 165,
        "prerequisite_checks": [
          "Safety systems powered",
          "Emergency procedures reviewed",
          "Crew evacuation plans verified"
        ],
        "verification_steps": [
          {
            "step_id": "SAFE-001",
            "description": "Test emergency power shutdown",
            "method": "Emergency shutdown simulation",
            "tools_required": [
              "Emergency button",
              "Power monitoring system",
              "Timer",
              "Current probes"
            ],
            "duration_minutes": 30,
            "pass_criteria": "Shutdown completes <5s, isolation confirmed",
            "fail_threshold": "Shutdown time >10s or partial isolation",
            "verification_status": "PENDING"
          },
          {
            "step_id": "SAFE-002",
            "description": "Verify fire suppression system",
            "method": "Fire simulation test",
            "tools_required": [
              "Fire test rig",
              "Temperature sensors",
              "Gas detectors",
              "Control system"
            ],
            "duration_minutes": 45,
            "pass_criteria": "Suppression activation <10s, temperature control achieved",
            "fail_threshold": "Activation delay >20s or suppression ineffective",
            "verification_status": "PENDING"
          },
          {
            "step_id": "SAFE-003",
            "description": "Test cabin pressure relief system",
            "method": "Overpressure test",
            "tools_required": [
              "Pressure relief valves",
              "Pressure gauges",
              "Flow meters",
              "Safety barriers"
            ],
            "duration_minutes": 60,
            "pass_criteria": "Relief activation at specified pressure, flow rate adequate",
            "fail_threshold": "Activation pressure out of tolerance or flow insufficient",
            "verification_status": "PENDING"
          },
          {
            "step_id": "SAFE-004",
            "description": "Verify emergency beacon activation",
            "method": "Beacon transmission test",
            "tools_required": [
              "Beacon tester",
              "RF analyzer",
              "GPS simulator",
              "Power supply"
            ],
            "duration_minutes": 30,
            "pass_criteria": "Beacon activates automatically, transmits correct ID and position",
            "fail_threshold": "Activation failure or incorrect transmitted data",
            "verification_status": "PENDING"
          }
        ]
      }
    }
  }
}