The U.S. aircraft register, updated daily · Carbon Free Flight by 2050
Registered aircraft · FAA record as of October 2, 2026
N666EX

Frank Koinzer BULLAIRCRAFT EXPLORE

N666EX is a Frank Koinzer BULLAIRCRAFT EXPLORE, a fixed-wing airplane with one motor with turboprop engines, built in 2016. It has 8 seats. It is registered to Sky West Aviation INC Trustee, a corporation in Albuquerque, New Mexico. The registration is valid: it was issued on April 10, 2015 and expires on April 30, 2028. It holds an experimental airworthiness certificate for amateur built, dated September 23, 2016.

Aircraft

Maker
Frank Koinzer
Model
BULLAIRCRAFT EXPLORE
Serial number
BUEX0001
Type
Fixed-wing, single engine
Power
Turboprop, 1 motor · Walter M601 SER · 777 hp
Seats
8
Year built
2016
Transponder code
A8CAFD (octal 52145375)

Registration

Status
Valid registration
Certificate issued
April 10, 2015
Expires
April 30, 2028
Last FAA action
May 5, 2023
Airworthiness
Experimental · Amateur built · September 23, 2016
FAA region
Southwestern
FAA record id
01172541

Owner as the FAA publishes it

Name
Sky West Aviation INC Trustee
Type
Corporation
Address
2523 Stieglitz Ave SE
Albuquerque, NM 87106-9605

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Earlier use of this number 1

2010-07-19Piper PA-32R-301T · exported to Netherlands · Triennial registration form was mailed and has not been returned by the Post Office

Records check free · 1 to understand · 4 clear

The public federal record on N666EX, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.

CLEARRegistration and identity

Valid registration to Sky West Aviation INC Trustee, a corporation, certificate issued April 10, 2015, expires April 30, 2028. No fractional interest recorded. [1]

CLEARAirworthiness certificate

Experimental certificate for amateur built, dated September 23, 2016, consistent with the 2016 manufacture year. [1]

CLEARPrior registrations of this airframe

No earlier tail number is recorded against serial BUEX0001 for this model in the deregistered file. [2]

ATTENTIONTail number reuse

N666EX was previously assigned to 1 other aircraft: Piper PA-32R-301T (serial 3257241, cancelled July 19, 2010). Histories keyed to the tail number alone can mix aircraft up; this check keys on the serial number. [2]

NOTERecent registry documents

No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]

CLEARAccident and incident record

No NTSB investigation records located under N666EX. CLEAR means the query ran and returned nothing, not that nothing ever happened. [4]

PENDINGTitle chain, liens and 337 forms

These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.

PENDINGAirworthiness directives and utilization

AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.

CLEAR the source was checked and shows no adverse findingATTENTION a fact a buyer or lender should understand, often routineNOTE context onlyPENDING covered by the full report
  1. FAA Releasable Aircraft Database, master file, file of October 2, 2026. registry.faa.gov/
  2. FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
  3. FAA document index: registry documents received in recent weeks, file of October 2, 2026. registry.faa.gov/
  4. NTSB aviation accident database (CAROL), records through September 30, 2026. data.ntsb.gov/carol-main-public/basic-search

This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this record on the FAA site · This record as data