Maker · data as of October 2, 2026

Rathburn John

2 aircraft on the U.S. register. The most recent registration was January 27, 2021.

KOLBRA1CHALLENGER II1

KOLBRA · CHALLENGER II

Indiana1Arkansas1

Aircraft newest first

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N901BH	Rathburn John KOLBRA	Fixed-wing, single engine	Individual owner Arkansas	Experimental	2021-01-27	Valid
N493KV	Rathburn John CHALLENGER II	Fixed-wing, single engine	Individual owner Indiana	Experimental	2005-09-07	Valid