Single-engine piston

N9AK

1982 Homebuilt Acro Sport II

Registered No accidents on file
Built
1982
Serial
521
Class
Single-engine piston
Engines
Lycoming HIO-360 series
Status
Current as of October 2026
Registered owner
Oklahoma Warbird Aviation LLC (LLC)
Based
Oklahoma City, OK
Registration record

N9AK on the FAA register

Type
1982 Homebuilt Acro Sport II
Serial
521
Engines
Lycoming HIO-360 series
Registered owner
Oklahoma Warbird Aviation LLC
Oklahoma City, OK
Certificate issued
2022-05-05
Airworthiness date
1983-04-22
Registration expires
2029-05-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
AC6A84
Mode S (octal)
53065204
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-05-31
    Registration expires (renewal due).
  • 2022-05-05
    Certificate of registration issued as N9AK.
  • 1983-04-22
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 1982
    Manufactured (1982).
Overview

About N9AK

N9AK is a 1982 Homebuilt Acro Sport II, serial number 521. The FAA register lists Oklahoma Warbird Aviation LLC as the registrant in Oklahoma City, Oklahoma. The current certificate of registration was issued on May 5, 2022 and expires on May 31, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming HIO-360 series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated April 22, 1983.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N9AK.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N9AK.

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

Same state

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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.