N1811B - 1952 North American Harvard 4 Aircraft Registration

ULTS

1952 NORTH AMERICAN HARVARD 4

Aircraft Description

N1811B is a 1952 North American HARVARD 4, a single-engine reciprocating (piston) aircraft registered to Onaero INC in Santa Monica, CA. This aircraft holds a experimental airworthiness certificate issued by the Federal Aviation Administration on November 26, 2013. The registration certificate was issued on November 2, 2017. The registration is set to expire on November 30, 2027. Powered by a P&w R1340 SERIES engine producing 600 horsepower, N1811B is. The aircraft's Mode S transponder code is A146E0 (hex), used for ADS-B identification and flight tracking. N1811B was last tracked by AviatorDB near Oxnard Airport (KOXR) on March 11, 2026. The FAA registry record for N1811B was last updated on April 1, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

North American is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 1,317 North American aircraft currently registered in the FAA database, including the HARVARD 4 model.

AviatorDB has found no NTSB accident or incident reports involving N1811B. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.

Model Year
1952
Manufacturer
NORTH AMERICAN
Model
HARVARD 4
Type Aircraft
Fixed Wing Single Engine
ICAO Type Code
ULTSUltrasport 496
Cruise Speed
141 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
November 26, 2013
Classification
Experimental 3 Category
Type Registration
Corporation
Status
Valid Registration
Cert Issue Date
November 2, 2017

Registered Owner

Name
ONAERO INC
Address
2201 MARINE ST
City
SANTA MONICA
State / Zip Code
California90405-6041
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Engine Manufacturer
P&W
Engine Model
R1340 SERIES
Horsepower
600 HP
Mode S Code (Oct)
50243340
Mode S Code (Hex)
A146E0

Additional Details

Registration
N1811B
Serial Number
20247
Number of Engines
1
Number of Seats
2
Expiration Date
November 30, 2027
Last Action Date
April 1, 2023
Last Update Date
January 19, 2026
Unique ID
00154651

Last Known Position

Date
March 11, 2026 (UTC 20:19:43)
Airport
Latitude
34.200703
Longitude
-119.207181

Data Source

Data provided by the US Federal Aviation Administration. View on FAA.gov

Last updated: 2026-04-01 01:32:20 UTC