Single-engine piston

N6400S

1999 Homebuilt RV-4/HARMON Rockt II

Registered No accidents on file
Built
1999
Serial
4272/218
Class
Single-engine piston
Engines
Lycoming IO-540 series
Status
Current as of October 2026
Registered owner
Co-owned · sign in to see
Based
Ward, CO
Registration record

N6400S on the FAA register

Type
1999 Homebuilt RV-4/HARMON Rockt II
Serial
4272/218
Engines
Lycoming IO-540 series
Registered owner
Co-owned — the name of an individual registrant is shown to signed-in users. Sign in
Ward, CO
Certificate issued
2020-09-28
Airworthiness date
1999-12-14
Registration expires
2027-09-30
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A867A4
Mode S (octal)
52063644
Seats (type)
2
Weight class
up to 12,499 lb
Kit
Vans Aircraft Inc RV-4
Status
Current as of October 2026
Registry history

Timeline

  • 2027-09-30
    Registration expires (renewal due).
  • 2020-09-28
    Certificate of registration issued as N6400S.
  • 1999-12-14
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N6400S

N6400S is a 1999 Homebuilt RV-4/HARMON Rockt II, serial number 4272/218. It is registered to co-owners in Ward, Colorado. The current certificate of registration was issued on September 28, 2020 and expires on September 30, 2027.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming IO-540 series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated December 14, 1999.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N6400S.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N6400S.

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

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Browse: Aircraft registered in Colorado· 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.