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Maker · data as of September 25, 2026
Harmon John M
2 aircraft on the U.S. register. The most recent registration was July 3, 2025.
Models
RV-4
1
HARMON ROCKET II
1
States
Nevada
1
California
1
Registrations by year
0
0
0
1
1
1
2025
Aircraft
newest first
Tail no.
Maker and model
Group
Owner and base
Certificate
Registered
Status
N134JH
Harmon John M
RV-4
Fixed-wing, single engine
Diamond X LLC
Elko, Nevada
Experimental
2025-07-03
Valid
N42HR
Harmon John M
HARMON ROCKET II
Fixed-wing, single engine
Individual owner
California
Experimental
1992-05-06
Valid