N3781G - 1953 Hiller HH-120 Aircraft Registration

1953 HILLER HH-120

Aircraft Description

N3781G is a 1953 Hiller HH-120, a single-engine reciprocating (piston) aircraft registered to Classic Rotors Museum in Ramona, CA. This aircraft holds a experimental airworthiness certificate issued by the Federal Aviation Administration on June 4, 2004. The registration certificate was issued on June 2, 2004. The registration is set to expire on August 31, 2027. Powered by a Hiller 8RJ2B engine producing 4 horsepower, N3781G is. The aircraft's Mode S transponder code is A45405 (hex), used for ADS-B identification and flight tracking. The FAA registry record for N3781G was last updated on March 10, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

Hiller is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 261 Hiller aircraft currently registered in the FAA database, including the HH-120 model.

AviatorDB has found no NTSB accident or incident reports involving N3781G. 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
1953
Manufacturer
HILLER
Model
HH-120
Type Aircraft
Rotorcraft
Cruise Speed
99 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
June 4, 2004
Classification
Experimental 3 Category
Type Registration
Corporation
Status
Valid Registration
Cert Issue Date
June 2, 2004

Registered Owner

Name
CLASSIC ROTORS MUSEUM
Address
2690 MONTECITO RD
City
RAMONA
State / Zip Code
California92065-1611
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Engine Manufacturer
HILLER
Engine Model
8RJ2B
Horsepower
4 HP
Mode S Code (Oct)
51052005
Mode S Code (Hex)
A45405

Additional Details

Registration
N3781G
Serial Number
534663
Number of Engines
1
Number of Seats
1
Expiration Date
August 31, 2027
Last Action Date
March 10, 2023
Last Update Date
January 19, 2026
Unique ID
00510164

Data Source

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

Last updated: 2026-06-15 01:32:20 UTC