N-Number Lookup API

Try an exact N-number before you integrate

Accepted N-number formats

The API normalizes accepted input to uppercase without a dash before lookup. Input may use N or n and may include one optional dash immediately after the prefix.

Make the same request from your server

Replace N_NUMBER with an accepted N-number and send the API key from your Grizzly Bulls account as a Bearer credential. Browser CORS is not enabled for the machine API, so the JavaScript example is for Node.js 18+ or another server runtime.

curl --fail-with-body \  -H "Authorization: Bearer $GRIZZLY_BULLS_API_KEY" \  "https://api.grizzlybulls.com/v1/aircraft/N_NUMBER"

import json
import os
import urllib.request

request = urllib.request.Request(
    "https://api.grizzlybulls.com/v1/aircraft/N_NUMBER",
    headers={"Authorization": f"Bearer {os.environ['GRIZZLY_BULLS_API_KEY']}"},
)

with urllib.request.urlopen(request) as response:
    aircraft = json.load(response)

print(aircraft["data"]["registration"]["nNumber"])
print(aircraft["data"]["aircraft"]["manufacturer"])
print(aircraft["data"]["aircraft"]["model"])

const response = await fetch(
  "https://api.grizzlybulls.com/v1/aircraft/N_NUMBER",
  {
    headers: {
      Authorization: "Bearer " + process.env.GRIZZLY_BULLS_API_KEY,
    },
  },
);

if (!response.ok) {
  throw new Error("Aircraft API request failed: " + response.status);
}

const { data } = await response.json();
console.log(data.registration.nNumber, data.aircraft.manufacturer, data.aircraft.model);

What the current-record response contains

The authenticated endpoint returns the reviewed aircraft-public-v1 current record. These field groups are representative, not a second schema definition. The OpenAPI contract remains the machine-readable authority.

The fuller authenticated current record can include registrant fields that the current FAA public source releases. Registration data is not proof of beneficial economic ownership, and current FAA withholding controls what Grizzly Bulls publishes.

Errors, metering & retries

Freshness, provenance & privacy boundaries

Related technical guides