Single-engine piston

N1811B

1952 North American Harvard 4

Registered No accidents on file
Built
1952
Serial
20247
Class
Single-engine piston
Engines
Pratt & Whitney R1340 series
Status
Current as of October 2026
Registered owner
Onaero Inc (Corporation)
Based
Santa Monica, CA
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1952 North American Harvard 4
Representative photo of a North American Harvard 4. Not a photo of N1811B.
Registration record

N1811B on the FAA register

Type
1952 North American Harvard 4
Serial
20247
Engines
Pratt & Whitney R1340 series
Registered owner
Onaero Inc
Santa Monica, CA
Certificate issued
2017-11-02
Airworthiness date
2013-11-26
Registration expires
2027-11-30
Airworthiness class
Experimental · exhibition
Mode S (hex)
A146E0
Mode S (octal)
50243340
Seats (type)
2
Weight class
up to 12,499 lb
Range (type)
710 nm
Cruise (type)
126 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2027-11-30
    Registration expires (renewal due).
  • 2017-11-02
    Certificate of registration issued as N1811B.
  • 2013-11-26
    Airworthiness date on the current FAA record (experimental category (exhibition)).
  • 1952
    Manufactured (1952).
Overview

About N1811B

N1811B is a 1952 North American Harvard 4, serial number 20247. The FAA register lists Onaero Inc as the registrant in Santa Monica, California. The current certificate of registration was issued on November 2, 2017 and expires on November 30, 2027.

The FAA aircraft reference file describes the type as a single-engine piston, one Pratt & Whitney R1340 series engine and 2 seats. Published figures for the type give a cruise speed of about 126 knots and a range of about 710 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is experimental category (exhibition), dated November 26, 2013.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N1811B.

Cruise
126 kt
Range
710 nm
Fuel burn
12 gph

Published figures for the North American Harvard 4 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 N1811B.

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.