Maker · data as of October 2, 2026

Harmon John M

2 aircraft on the U.S. register. The most recent registration was July 3, 2025.

RV-41HARMON ROCKET II1

RV-4 · HARMON ROCKET II

Nevada1California1

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