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

William M Oprendek

2 aircraft on the U.S. register. The most recent registration was November 12, 2025.

Models

PITTS S1S1CARBON CUB CCK-18651

States

California1

Registrations by year

000111201912025

Aircraft newest first

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N27WP William M Oprendek
PITTS S1S
Fixed-wing, single engine Withheld at owner's request
Experimental 2025-11-12 Valid
N158WD William M Oprendek
CARBON CUB CCK-1865
Fixed-wing, single engine Red Baron Leasing LLC
Santa Barbara, California
Experimental 2019-03-23 Valid