# Open Source Filings — FAA Aircraft Registration Search

> Open Source Filings — FAA Aircraft Registration Search is a paid API for AI agents from api.osf-master-server.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Search the FAA Releasable Aircraft Database by tail number, owner, location, serial number, or manufacture year to retrieve provenance-stamped US civil aircraft registration records.

## Facts

- Endpoint: GET https://api.osf-master-server.com/x402/aircraft/search/:query
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/open-source-filings-faa-aircraft-registration-search-4a7736c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rd9VTTCzMe74YPLIO9Yw3

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 open-source-filings-faa-aircraft-registration-search-4a7736c8
```

Example prompt: Who owns the aircraft with tail number N17973? Pull the FAA registration record including registrant name, location, manufacture year, and airworthiness class.

## When to prefer this

Choose this endpoint when you need provenance-stamped, authoritative FAA civil aircraft registration data searchable by tail number, owner name, city, state, serial number, or manufacture year. It is purpose-built for aircraft ownership lookup, fleet research, asset tracing, and counterparty due diligence against US-registered civil aircraft. Prefer it over general web search when you need structured, verifiable records with a direct provenance URL back to government source data.

## Known failure modes

- No matches found for the query — returns empty result set if the tail number, owner, or location does not exist in the FAA database
- Ambiguous query returns too many results — broad owner names or common city names may return large result sets
- Stale data — the FAA Releasable Aircraft Database is periodically updated, so very recent registrations or de-registrations may not be reflected
- Malformed query — missing or empty query parameter returns an error
- Payment failure — if the x402 micropayment of $0.05 USDC is not processed, the request will not be fulfilled

## How this service works

Search US civil aircraft registrations from the FAA Releasable Aircraft Database by manufacturer (Boeing, Cessna, Piper), model, tail number (N number), owner, city, state, serial or year. Returns manufacturer, model, tail number, registrant, location, airframe and engine type, airworthiness certification and a provenance URL per match, plus a live coverage disclosure on every call.

## Output

Returns one or more matching aircraft records from the FAA Releasable Aircraft Database, each containing: tail number (N number), registrant name, registrant city and state, year of manufacture, airworthiness class, and a provenance URL linking to the source government record.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "query"
     ],
     "properties": {
      "query": {
       "type": "string",
       "description": "Keyword(s): manufacturer, model, tail number, registered owner, city or state. E.g. 'Boeing', 'Cessna 172', 'N17973' or 'MARION TX'."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/open-source-filings-faa-aircraft-registration-search-4a7736c8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.osf-master-server.com](https://www.zero.xyz/host/api.osf-master-server.com/llms.txt)