Twin piston

N1231P

1955 Piper PA-23

Registered No accidents on file
Built
1955
Serial
23-251
Class
Twin piston
Engines
2 × Lycoming O-320 series
Status
Current as of October 2026
Registered owner
Twin Oaks Airpark Inc (Corporation)
Based
Hillsboro, OR
Registration record

N1231P on the FAA register

Type
1955 Piper PA-23
Serial
23-251
Engines
2 × Lycoming O-320 series
Registered owner
Twin Oaks Airpark Inc
Hillsboro, OR
Certificate issued
2014-04-04
Airworthiness date
1956-06-08
Registration expires
2030-04-30
Airworthiness class
Standard · normal
Mode S (hex)
A06160
Mode S (octal)
50060540
Seats (type)
5
Weight class
up to 12,499 lb
Range (type)
603 nm
Cruise (type)
148 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2030-04-30
    Registration expires (renewal due).
  • 2014-04-04
    Certificate of registration issued as N1231P.
  • 1956-06-08
    Airworthiness date on the current FAA record (standard category (normal)).
  • 1955
    Manufactured (1955).
Overview

About N1231P

N1231P is a 1955 Piper PA-23, serial number 23-251. The FAA register lists Twin Oaks Airpark Inc as the registrant in Hillsboro, Oregon. The current certificate of registration was issued on April 4, 2014 and expires on April 30, 2030.

The FAA aircraft reference file describes the type as a twin piston, two Lycoming O-320 series engines and 5 seats. Published figures for the type give a cruise speed of about 148 knots and a range of about 603 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated June 8, 1956.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N1231P.

Cruise
148 kt
Range
603 nm
Takeoff over 50 ft
1,290 ft
Landing over 50 ft
750 ft
Fuel burn
14 gph

Published figures for the Piper PA-23 type. They describe the model, not this airframe's equipment or condition.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N1231P.

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

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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.