{
  "type": "product",
  "id": "garmin-gra-55",
  "url": "https://www.nomyparts.com/companies/garmin/products/gra-55/",
  "name": "GRA 55",
  "fullName": "GRA 55 altitude or distance sensor",
  "manufacturer": {
    "id": "garmin",
    "name": "Garmin",
    "url": "https://www.nomyparts.com/companies/garmin/"
  },
  "category": {
    "id": "sensors",
    "name": "Sensors"
  },
  "subcategory": {
    "id": "altimeters",
    "name": "Altimeters"
  },
  "description": "GRA 55 is an altitude or distance sensor that measures separation from a surface or a pressure-based altitude reference. It provides measurement data for the host avionics installation, supporting the aircraft functions that depend on height information.",
  "manufacturerPage": "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf",
  "certifications": [],
  "specifications": [
    {
      "id": "grade",
      "name": "Grade",
      "sources": [],
      "verified": null,
      "value": "Aerospace-grade"
    },
    {
      "id": "market",
      "name": "Market",
      "sources": [],
      "verified": null,
      "value": "Civil"
    },
    {
      "id": "platform-class",
      "name": "Platform class",
      "sources": [],
      "verified": null,
      "value": [
        "Manned aircraft"
      ]
    },
    {
      "id": "airframe",
      "name": "Airframe",
      "sources": [],
      "verified": null,
      "value": [
        "Fixed-wing",
        "Helicopter"
      ]
    },
    {
      "id": "availability",
      "name": "Availability",
      "sources": [],
      "verified": null,
      "value": "In production"
    },
    {
      "id": "mass",
      "name": "Mass",
      "sources": [
        "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
        "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf"
      ],
      "verified": "2026-10-19",
      "value": 1587.57,
      "unit": "g",
      "si": {
        "value": 1.58757,
        "unit": "kg"
      }
    },
    {
      "id": "dimensions",
      "name": "Dimensions (L × W × H, mm)",
      "sources": [
        "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
        "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf"
      ],
      "verified": "2026-10-19",
      "value": "3.99 in H x 3.02 in W x 11.62 in D, including mounting rack"
    },
    {
      "id": "operating-temperature",
      "name": "Operating temperature",
      "sources": [
        "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
        "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf"
      ],
      "verified": "2026-10-19",
      "value": {
        "min": -55,
        "max": 85
      },
      "unit": "°C"
    },
    {
      "id": "sensor-technology",
      "name": "Sensor technology",
      "sources": [
        "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
        "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Radar"
    },
    {
      "id": "max-range",
      "name": "Max range",
      "sources": [
        "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
        "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf"
      ],
      "verified": "2026-10-19",
      "value": 777.24,
      "unit": "m"
    },
    {
      "id": "over-water-performance",
      "name": "Over-water performance",
      "sources": [
        "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
        "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf"
      ],
      "verified": "2026-10-19",
      "value": "Manufacturer describes operation over choppy water as well as varied terrain."
    }
  ],
  "sources": [
    {
      "url": "https://support.garmin.com/en-MY/?faq=DggWY8URcd5brMcoeZGIr6",
      "checked": "2026-10-19"
    },
    {
      "url": "https://www8.garmin.com/aviation/brochures/General%20Aviation%20Solutions%2010_25.pdf",
      "checked": "2026-10-25"
    }
  ],
  "updated": "2026-11-04",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "licenseName": "CC BY 4.0",
  "attribution": "Source: NomyParts, https://www.nomyparts.com/companies/garmin/products/gra-55/"
}