Single-engine piston

N4685S

1965 Homebuilt SA7D

Registered No accidents on file
Built
1965
Serial
EC-1
Class
Single-engine piston
Engines
Lycoming O-235 series
Status
Current as of October 2026
Registered owner
Seneca Aeronautical Services LLC (LLC)
Based
Wilmington, DE
Registration record

N4685S on the FAA register

Type
1965 Homebuilt SA7D
Serial
EC-1
Engines
Lycoming O-235 series
Registered owner
Seneca Aeronautical Services LLC
Wilmington, DE
Certificate issued
2019-12-05
Airworthiness date
1972-03-14
Registration expires
2029-12-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A5BA6B
Mode S (octal)
51335153
Seats (type)
1
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-12-31
    Registration expires (renewal due).
  • 2019-12-05
    Certificate of registration issued as N4685S.
  • 1972-03-14
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 1965
    Manufactured (1965).
Overview

About N4685S

N4685S is a 1965 Homebuilt SA7D, serial number EC-1. The FAA register lists Seneca Aeronautical Services LLC as the registrant in Wilmington, Delaware. The current certificate of registration was issued on December 5, 2019 and expires on December 31, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O-235 series engine and 1 seats. Its airworthiness certificate is experimental category (amateur-built), dated March 14, 1972.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N4685S.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N4685S.

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

Same state

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Browse: Aircraft registered in Delaware· 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.