{"characteristics": [{"gage": {"gage_id": "CAL-METRO-001", "gage_type": "calibrated_ruler", "msa_status": "approved", "resolution": 0.5, "calibration_due": "2026-06-15", "msa_grr_percent": 8.5}, "method": {"technique": "direct_measurement", "environment": "20°C ± 2°C", "procedure_ref": "PROC-DIM-001"}, "sample": {"size": 5, "frequency": "per_lot", "selection_method": "random"}, "char_id": "001", "results": [{"value": 1200.2, "sample": 1, "conformance": "pass"}, {"value": 1199.8, "sample": 2, "conformance": "pass"}, {"value": 1200.5, "sample": 3, "conformance": "pass"}, {"value": 1200.1, "sample": 4, "conformance": "pass"}, {"value": 1199.6, "sample": 5, "conformance": "pass"}], "category": "dimensional", "statistics": {"max": 1200.5, "min": 1199.6, "mean": 1200.04, "range": 0.9, "std_dev": 0.35}, "conformance": {"status": "pass", "cpk_status": "pass", "all_in_spec": true, "cpk_calculated": 1.9}, "description": "Longitud total", "specification": {"unit": "mm", "nominal": 1200, "lower_limit": 1199, "upper_limit": 1201, "tolerance_type": "bilateral", "tolerance_display": "1200 ± 1"}, "balloon_number": 1, "classification": {"code": "CC", "level": "critical", "symbol": "◇", "min_cpk": 1.67, "requires_cpk": true}}, {"method": {"distance": "30 cm", "lighting": "1000 lux minimum", "technique": "visual_inspection"}, "sample": {"aql": 2.5, "size": 8, "frequency": "per_lot"}, "char_id": "002", "results": [{"notes": null, "sample": 1, "conformance": "pass"}, {"notes": null, "sample": 2, "conformance": "pass"}, {"notes": "Marca de lijado visible", "sample": 3, "conformance": "fail", "defect_code": "DEF-VIS-02"}, {"notes": null, "sample": 4, "conformance": "pass"}, {"notes": null, "sample": 5, "conformance": "pass"}, {"notes": null, "sample": 6, "conformance": "pass"}, {"notes": null, "sample": 7, "conformance": "pass"}, {"notes": null, "sample": 8, "conformance": "pass"}], "category": "visual", "conformance": {"status": "pass", "aql_result": "accept", "accept_number": 1, "defects_found": 1, "reject_number": 2}, "description": "Acabado superficial", "specification": {"requirement": "Sin defectos visibles, acabado uniforme", "reference_standard": "STD-VIS-001", "acceptance_criteria": "Comparar con muestra límite"}, "balloon_number": 2, "classification": {"code": "SC", "level": "major", "symbol": "△"}}, {"method": {"technique": "load_test", "procedure_ref": "PROC-LOAD-001", "test_equipment": "EQ-LOAD-001"}, "sample": {"size": 1, "frequency": "per_lot", "destructive": false}, "char_id": "003", "results": [{"notes": "Sin deformación", "value": 185, "sample": 1, "conformance": "pass"}], "category": "functional", "conformance": {"margin": 23.3, "status": "pass"}, "description": "Resistencia carga", "specification": {"unit": "kg", "nominal": 150, "lower_limit": 150, "test_duration": "60 seconds", "tolerance_type": "minimum"}, "balloon_number": 3, "classification": {"code": "CC", "level": "critical", "safety_related": true}}]}