Single-engine piston

N4685

2009 Homebuilt BD-4

Registered No accidents on file
Built
2009
Serial
800
Class
Single-engine piston
Engines
Ama/Expr UNKNOWN ENG
Status
Current as of October 2026
Registered owner
Windoor Aviation LLC (LLC)
Based
Greenwood, IN
Registration record

N4685 on the FAA register

Type
2009 Homebuilt BD-4
Serial
800
Engines
Ama/Expr UNKNOWN ENG
Registered owner
Windoor Aviation LLC
Greenwood, IN
Certificate issued
2026-10-30
Airworthiness date
2009-09-03
Registration expires
2033-10-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A5BA5A
Mode S (octal)
51335132
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2033-10-31
    Registration expires (renewal due).
  • 2026-10-30
    Certificate of registration issued as N4685 to the current registrant.
  • 2012-12-11
    N4685 previously assigned to a S N I A S SA 318C Alouette Ast (s/n 2235); cancelled.
  • 2009-09-03
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N4685

N4685 is a 2009 Homebuilt BD-4, serial number 800. The FAA register lists Windoor Aviation LLC as the registrant in Greenwood, Indiana. The current certificate of registration was issued on October 30, 2026 and expires on October 31, 2033.

The FAA aircraft reference file describes the type as a single-engine piston, one Ama/Expr UNKNOWN ENG engine and 4 seats. Its airworthiness certificate is experimental category (amateur-built), dated September 3, 2009.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N4685.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N4685.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

Same model

More Homebuilt BD-4 aircraft

All 4 Homebuilt BD-4 registrations →
Same state

Other aircraft registered in Indiana

All 5,700 aircraft registered in Indiana →
Similar aircraft

Other single-engine pistons on the register

Own N4685?

Get a free valuation, digitize the logbooks, or list it on fyiAero.

Free valuation Logbook transcription

Browse: Aircraft registered in Indiana· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.