# Aircraft Registration Lookup by Tail Number or Serial

> Aircraft Registration Lookup by Tail Number or Serial is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.013/call, status unknown (last checked 2026-10-31).

Returns FAA aircraft registration data for a given US tail number (N-number) or aircraft serial number.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/aircraft/registration?utm_source=zero.xyz
- Price: $0.013/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aircraft-registration-lookup-by-tail-number-or-serial-dcd812cf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pXo-jtEA0khBk-CLjq29f

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability aircraft-registration-lookup-by-tail-number-or-serial-dcd812cf
```

Example prompt: Can you look up the FAA registration details for the aircraft with tail number N801NN?

## When to prefer this

Use this endpoint when you need to quickly resolve a US aircraft tail number (N-number) or serial number to its FAA registration record, particularly in agent workflows requiring aviation compliance checks, ownership verification, or aircraft identification at $0.013 per call — suitable for on-demand lookups rather than bulk registry crawls.

## Known failure modes

- Tail number not found in FAA registry — returns success:false or empty result
- Invalid N-number format supplied — may return error or no match
- Aircraft serial number not matched — returns empty result if no tail number provided and serial is unknown
- API payment failure — x402 payment not accepted, endpoint returns 402
- Rate limiting or service unavailability on the upstream FAA data source

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

Returns a JSON object with success flag and a result object containing FAA aircraft registration data, which may include the registered owner, aircraft make, model, year, registration status, and related details keyed to the provided tail number or serial number.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "tail": {
       "type": "string",
       "default": null,
       "description": "US tail number / N-number, for example N801NN"
      },
      "serial": {
       "type": "string",
       "default": null,
       "description": "Aircraft serial number (used if no tail is given)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aircraft-registration-lookup-by-tail-number-or-serial-dcd812cf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)