The U.S. aircraft register, updated daily

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Registered aircraft · FAA record as of October 23, 2026
N420BK

Kropelin Barry R RBIPE

ValidFAA registration status code V: Valid registration. All codesWisconsin

N420BK is a Kropelin Barry R RBIPE, a fixed-wing airplane with one motor with a two-stroke engine, built in 2011. It has 1 seat. It is registered to West Benjamin M, a partnership in Sun Prairie, Wisconsin. The registration is valid: it was issued on January 3, 2023 and expires on January 31, 2030. It holds an experimental airworthiness certificate for amateur built, dated August 27, 2023.

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Flight history: where it flew in the last seven days · follow it on the live map

Aircraft

Maker
Kropelin Barry R
Model
RBIPE
Serial number
BK04
Type
Fixed-wing, single engineFAA type of aircraft code 4 (the FAA's broad category for the airframe). Every aircraft with this code · All codes
Power
Two-cycle pistonFAA type of engine code 7 (what powers it, as the FAA classes engines). Every aircraft with this code · All codes, 1 motor · Rotax 582 · 65 hp
Seats
1
Year built
2011
Transponder code
A4FBC2 (octal 51175702)

Registration

Status
Valid registrationFAA registration status code V (whether the registration certificate is in force). Every aircraft with this code · All codes
Certificate issued
January 3, 2023
Expires
January 31, 2030
Last FAA action
September 30, 2023
Airworthiness
ExperimentalFAA airworthiness class code 4 (the kind of airworthiness certificate it flies under and what it is approved for). Every aircraft with this code · All codes · Amateur builtFAA certificate purpose code 2 (the kind of airworthiness certificate it flies under and what it is approved for). All codes · August 27, 2023
FAA region
Great LakesFAA region code C (the FAA regional office that handles the record). All codes
FAA record id
01053745

Owner as the FAA publishes it

Name
West Benjamin M
Type
PartnershipFAA type of owner code 2 (who holds the registration: a person, a company, a trust or a government body). Every aircraft with this code · All codes
Address
1273 Meadowlark Dr
Sun Prairie, WI 53590-2479
Co-owners
Flack Ryan J

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.

Connections how N420BK links to the rest of the register

Design
Engine
  • Rotax 582 61 aircraft with this engine series · 65 hp
Owner
Place
  • Sun Prairie, WI 31 aircraft registered in this town
  • Wisconsin 6,166 aircraft registered

The whole map of how records connect · these connections as data: /graph/aircraft/N420BK.json.

Records check free · 1 to understand · 4 clear

The public federal record on N420BK, 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 West Benjamin M, a partnership, certificate issued January 3, 2023, expires January 31, 2030. No fractional interest recorded. [1]

ATTENTIONAirworthiness certificate date

The airworthiness certificate on file is dated August 27, 2023, 12 years after the 2011 manufacture year. A re-issued certificate commonly follows export and re-import, a rebuild, or a return to the register after cancellation. The cause is documented in the FAA aircraft records file, which the full report obtains. [1]

CLEARPrior registrations of this airframe

No earlier tail number is recorded against serial BK04 for this model in the deregistered file. [2]

CLEARTail number reuse

No other airframe has carried N420BK according to the deregistered file. [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 N420BK. 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 23, 2026. registry.faa.gov/
  2. FAA deregistered aircraft file (part of the same download), file of October 23, 2026. registry.faa.gov/
  3. FAA document index: registry documents received in recent weeks, file of October 23, 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 23, 2026. See this record on the FAA site · This record as data