Registry / Hiller / HH-120 / N3781G

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N3781G V

Hiller HH-120 · 1953 · Ramona, CA

FAA Registry ↗ FlightAware ↗ FlightRadar24 ↗ ADS-B Globe ↗

This aircraft — FAA registration facts

N3781G is a 1953 Hiller HH-120 (serial 534663), registered to Classic Rotors Museum (corporation) in Ramona, CA. Its FAA registration is recorded as v and expires August 2027; the airworthiness certificate dates from June 2004 (22 years ago). It carries a Hiller 8RJ2B engine rated at 4 hp. Its Mode-S transponder broadcasts the ICAO 24-bit address A45405. Classic Rotors Museum holds 26 aircraft on the registry.

Registered owner
Classic Rotors Museum
Owner type
Corporation
Based in
Ramona, CA
Serial number
534663
Year built
1953 · 73 yrs old
Airworthiness class
43
FAA status
V
Mode-S / ICAO24
A45405 · 51052005 octal
Certificate issued
Jun 2, 2004
Airworthiness date
Jun 4, 2004
Last FAA activity
Mar 10, 2023
Registration expires
Aug 31, 2027
FAA region
4

Source: FAA aircraft registry (public record). Community reviews and photos below.

Engine on this aircraft

Engine
Hiller 8RJ2B
Engine type
Reciprocating (Piston)
Rated power
4 hp
Power per seat
4 hp
FAA engine code
33501

Source: FAA engine reference (ENGINE.txt), matched on this registration's engine code.

Community facts about N3781G

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Flight history & live tracking

ICAO24: a45405
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Aircraft Type — ACFTREF 4360202

Hiller HH-120
Engines: 1
Type: piston
Seats: 1
Cruise: 86 KTAS
Category: Standard

Engine — CODE 33501

Manufacturer: Hiller
Model: 8RJ2B
Type: Reciprocating (Piston)
Horsepower: 4 HP

FAA Registration Record

N-Number: N3781G
Serial Number: 534663
Year Manufactured: 1953
ACFTREF Code: 4360202
Engine Code: 33501
Status: V (V)
Certification: 43
Type Aircraft: Rotorcraft (6)
Type Engine: Reciprocating (Piston) (1)
Source: master

Documents & resources

Commonly available reference sources for the Hiller HH-120. Always confirm against the manufacturer's current, authoritative publication for your specific aircraft.

View the Hiller HH-120 model overview, reviews & photos →

These are commonly available reference sources. FerryFlight Hub does not provide sample or generated documents on this page.

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Transponder / ADS-B

Mode S (octal): 51052005
ICAO 24-bit (hex): A45405
ADS-B Exchange ↗ | FlightAware ↗

Registrant

Classic Rotors Museum
Corporation
View all 26 aircraft registered to this owner →
2690 Montecito Rd
Ramona, CA, 920651611
FAA Region: 4

Key Dates

Certificate Issued Jun 2, 2004
Airworthiness Jun 4, 2004
Expiration Aug 31, 2027
Last Activity Mar 10, 2023
Data as of Oct 5, 2026

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