{
  "schema_version": "1.1.0",
  "checkpoint_id": "MH370_PUBLIC_CURRENT_STATE_2026-09-07_G1F",
  "updated_utc": "2026-09-07",
  "public_status": "NO_PREDICTIVE_EXECUTION_AUTHORIZED",
  "project": {
    "aircraft": "Boeing 777-2H6ER",
    "registration": "9M-MRO",
    "msn": 28420,
    "boeing_configuration": "WB175",
    "engines": "2 × RB211 Trent 892B-17",
    "trajectory_epoch_utc": "2014-03-07T18:22:12Z"
  },
  "clean_target": {
    "id": "SATCOM_POST_ANCHOR_TARGET_V1",
    "sha256": "f023fa0e0de6c5819ef95876c1277145762b7c0ac1a1006cd294b306479db8e5",
    "status": "CLEAN_TARGET_SCIENTIFICALLY_VALID",
    "finite_coarse_evaluations": 26952,
    "pre_anchor_path_contributions_active": false,
    "representative_north_minus_south_log_target_units": -179.8536203597335,
    "maximum_absolute_post_anchor_bto_difference_log_target_units": 2.3283064365386963e-10,
    "evidence_class": "ESTABLISHED_WORKSPACE"
  },
  "satcom_policy": {
    "residual_sign": "observed_minus_predicted",
    "fixed_bto_bias": {
      "sample_count": 17,
      "sum_us": -8426548,
      "exact_mean_us": -495679.29411764705,
      "source_display_rounded_us": -495679
    },
    "r600_request_timing_reference_correction_us": -4600,
    "events": [
      {
        "utc": "2014-03-07T18:25:27Z",
        "message": "R600 Log-on Request",
        "raw_bto_us": 17120,
        "corrected_bto_us": 12520,
        "ordinary_route_use": true
      },
      {
        "utc": "2014-03-08T00:19:29.416Z",
        "message": "R600 Log-on Request",
        "raw_bto_us": 23000,
        "corrected_bto_us": 18400,
        "bfo_hz": 182,
        "frequency_state": "TERMINAL_TRANSIENT"
      },
      {
        "utc": "2014-03-08T00:19:37.443Z",
        "message": "R1200 Log-on Acknowledge",
        "raw_bto_us": 49660,
        "bfo_hz": -2,
        "ordinary_route_bto_use": false,
        "frequency_state": "TERMINAL_TRANSIENT"
      }
    ]
  },
  "numerical_checkpoint": {
    "underlying_branches": 16,
    "continuation_levels": 5,
    "continuation_cases": 80,
    "jacobian_rows": 83,
    "jacobian_columns": 74,
    "effective_rank": 74,
    "objective_gradient_relative_check": 5.02e-06,
    "gauss_newton_hessian_vector_relative_check": 2.48e-08,
    "historical_best_kkt": 0.0608,
    "stationarity_acceptance_kkt": 0.01,
    "confirmed_stationary_solutions": 0,
    "interpretation": "LIMITED_ENVELOPE_NUMERICAL_SHAKEOUT_NOT_POSTERIOR"
  },
  "conditioned_catalog": {
    "mode_count": 128,
    "probabilistic_status": "NONPROBABILISTIC",
    "sampled_best_score": -60.14515364751398,
    "score_distance_bands": [
      {
        "within_log_units": 1,
        "mode_count": 12,
        "maximum_pairwise_endpoint_separation_km": 639.7923821744021,
        "latitude_deg_north": [
          -38.907954539086646,
          -35.375673062432234
        ],
        "longitude_deg_east": [
          86.72461824009372,
          92.423549009917
        ]
      },
      {
        "within_log_units": 5,
        "mode_count": 53,
        "maximum_pairwise_endpoint_separation_km": 1786.8810963827393,
        "latitude_deg_north": [
          -41.36822343717634,
          -31.6529502146714
        ],
        "longitude_deg_east": [
          80.75659741028682,
          96.73378700330852
        ]
      },
      {
        "within_log_units": 10,
        "mode_count": 62,
        "maximum_pairwise_endpoint_separation_km": 2384.472966435869,
        "latitude_deg_north": [
          -41.9678004433056,
          -28.62785816464285
        ],
        "longitude_deg_east": [
          78.70387180146327,
          99.41448031570644
        ]
      }
    ],
    "mandatory_labels": [
      "NOT_A_CONFIDENCE_REGION",
      "NOT_A_CREDIBLE_REGION",
      "NOT_AN_ENDPOINT_UNCERTAINTY"
    ]
  },
  "diagnostic_points": [
    {
      "id": "CLEAN_POST_ANCHOR_COARSE_CONSISTENCY_MAXIMUM",
      "latitude_deg_north": -34.536712283823114,
      "longitude_deg_east": 93.22757921497498,
      "score": -238.54836839076023,
      "evidence_class": "PROVISIONAL_WORKSPACE",
      "operational_use": "PROHIBITED"
    },
    {
      "id": "COMPETITIVE_240_240_MODEST_TURN_STATE_HISTORY",
      "mode_id": "GSP_2L_M240_Dp0_H10000:MODE:298d92632484c3be8dcc",
      "latitude_deg_north": -38.907954539086646,
      "longitude_deg_east": 86.7411348869789,
      "conditioned_v1_mps": 240,
      "conditioned_v2_mps": 240,
      "corrected_local_course_change_deg": 8.715162782179732,
      "transition_utc": "2014-03-07T20:02:04.139282Z",
      "score": -60.26833978640344,
      "evidence_class": "PROVISIONAL_WORKSPACE",
      "operational_use": "PROHIBITED"
    }
  ],
  "s50_plan": {
    "execution_status": "NOT_RUN",
    "method": "EVENT_SEQUENTIAL_SEQUENTIAL_MONTE_CARLO",
    "initial_search": "COARSE_WHOLE_ADMISSIBLE_SEVENTH_ARC",
    "adaptive_tempering": true,
    "ess_triggered_resampling": true,
    "guided_proposal_density_correction": true,
    "path_and_nuisance_rejuvenation": true,
    "full_trajectory_smoothing": true,
    "unique_ancestor_diagnostics": true,
    "genealogical_ess": true,
    "independent_seed_agreement": true,
    "primary_output": "WEIGHTED_TRAJECTORY_AND_TERMINAL_STATE_POSTERIOR"
  },
  "aircraft_performance_gate": {
    "aircraft_mapping": "B777-2H6ER_WB175_TRENT_892B-17",
    "candidate_qualification_status": "TIER2_B777_OPEN_PERFORMANCE_SOURCE_CANDIDATE_QUALIFICATION_V1_BLOCKED",
    "exact_reference_row_lookup": "GO_NONPREDICTIVE_ONLY",
    "bounded_interpolation": "NO_GO",
    "application_to_solver_modes": "NO_GO",
    "aircraft_performance_model_executable": false,
    "installed_engine_cruise_fuel_model_acquired": false,
    "joint_domain_support": "NO_USABLE_JOINT_SUPPORT",
    "source_request_dispatch": "NOT_SENT_REQUIRES_USER_APPROVAL",
    "runtime_dependency_acquisition": {
      "launcher_version": 4,
      "status": "PREPARED_OUTCOME_NOT_RECORDED",
      "installs_or_executes_candidates": false
    },
    "status_as_of_utc": "2026-09-04"
  },
  "drift": {
    "coupling_status": "DEFERRED_PENDING_CLEAN_TRAJECTORY_POSTERIOR",
    "copernicus_netcdf_files": 85,
    "approximate_total_bytes": 8440000000,
    "archive_parts": 5,
    "reunion_observed_presence_by_day": 508,
    "current_origin_ranking_authorized": false
  },
  "public_claims": {
    "current_endpoint": null,
    "posterior_exists": false,
    "search_recommendation": null,
    "predictive_execution_authorized": false
  },
  "carried_forward_checkpoint_utc": "2026-09-04",
  "latest_validation_gate": {
    "id": "G1F_SYNTHETIC_LIGHT_TIME_AND_FROZEN_APPROXIMATION",
    "status": "G1F_PASS",
    "result_date_utc": "2026-09-06",
    "run_id": "20260906T195934Z_faee8e08",
    "scope": "SYNTHETIC_LIGHT_TIME_VALIDATION",
    "distinct_light_time_legs": 4,
    "checks_passed": 68,
    "checks_total": 68,
    "synthetic_journeys": 17,
    "anchor_consistency": "Forward and backward anchors recovered the same journey within the declared tolerance.",
    "independent_validation": [
      "Analytic controls",
      "Independent Decimal-80 roots"
    ],
    "frozen_comparison": {
      "signed_difference_convention": "SnapshotMoving minus frozen",
      "units": "microseconds",
      "largest_absolute_signed_differences_fixture": "Synthetic stress case",
      "exact_differences_published": false
    },
    "provenance": {
      "basis": "Completed G1F checkpoint summary supplied in project conversation",
      "gate_result_filename": "GATE_RESULT.json",
      "primary_artifact_in_public_repository": false,
      "rerun_for_website_update": false
    },
    "interpretation": "Synthetic propagation validation; does not establish aircraft-performance qualification, a real-flight trajectory posterior, or an endpoint."
  }
}