Staging copy. The live site is at https://staging.data.eflight.com.
eFlight RegistryFAA data, updated daily
Maker · data as of September 25, 2026

Klemp Gregory J

2 aircraft on the U.S. register. The most recent registration was October 21, 2025.

Models

CHALLENGER II2

States

Wisconsin1Michigan1

Registrations by year

0001112025

Aircraft newest first

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N12911 Klemp Gregory J
CHALLENGER II
Fixed-wing, single engine Individual owner
Michigan
Experimental 2025-10-21 Valid
N392SK Klemp Gregory J
CHALLENGER II
Fixed-wing, single engine Individual owner
Wisconsin
Experimental Sale reported