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Registered aircraft · FAA record as of September 25, 2026
N3781G

Hiller HH-120

N3781G is a Hiller HH-120, a rotorcraft with a piston engine (a helicopter or multicopter), built in 1953. It has 1 seat. It is registered to Classic Rotors Museum, a corporation in Ramona, California. The registration is valid: it was issued on June 2, 2004 and expires on August 31, 2027. It holds an experimental airworthiness certificate for exhibition, dated June 4, 2004.

Aircraft

Maker
Hiller
Model
HH-120
Serial number
534663
Type
Rotorcraft
Power
Piston (reciprocating), 1 motor · Hiller 8RJ2B · 4 hp
Seats
1
Year built
1953
Cruising speed
99 mph
Transponder code
A45405 (octal 51052005)

Registration

Status
Valid registration
Certificate issued
June 2, 2004
Expires
August 31, 2027
Last FAA action
March 10, 2023
Airworthiness
Experimental · Exhibition · June 4, 2004
FAA region
Western-Pacific
FAA record id
00510164

Owner as the FAA publishes it

Name
Classic Rotors Museum
Type
Corporation
Address
2690 Montecito Rd
Ramona, CA 92065-1611

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data