The U.S. aircraft register, updated daily
A Ayres Corporation S-2, the same model family as N4004K
A Ayres Corporation S-2 like this one, not N4004K itself. Photo: Ahunt at English Wikipedia, Public domain, via Wikimedia Commons. Pictures of N4004K itself may be on Planespotters · JetPhotos · Airliners.net. Operator or owner? Send your own picture.
Registered aircraft · FAA record as of November 5, 2026
N4004K

Ayres Corporation S2R-600

ValidFAA registration status code V: Valid registration. All codesMichigan

N4004K is an Ayres Corporation S2R-600, a fixed-wing airplane with one motor with a piston engine, built in 1978. It has 1 seat. It is registered to Heritage AG LLC, an LLC in Lakeview, Michigan. The registration is valid: it was issued on October 14, 2021 and expires on October 31, 2028. It holds a restricted airworthiness certificate for agriculture and pest control, dated March 9, 1979.

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

Aircraft

Maker
Ayres Corporation
Model
S2R-600 · all S2R-600s and related versions
Built of
steel tube and aluminium
A welded steel-tube frame carries the loads, with aluminium (and some fibreglass) skins over it. The Thrush crop sprayer. This is how the Ayres Corporation S-2 family is built; the FAA does not record construction for each aircraft, and the type certificate data sheet is the authority for this one.
Serial number
2488R
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
Piston (reciprocating)FAA type of engine code 1 (what powers it, as the FAA classes engines). Every aircraft with this code · All codes, 1 motor · Airesearch TPE331 SERIES · 600 hp
Fuel
Jet A
Seats
1
Year built
1978
Transponder code
A4AF8F (octal 51127617)

Registration

Status
Valid registrationFAA registration status code V (whether the registration certificate is in force). Every aircraft with this code · All codes
Certificate issued
October 14, 2021
Expires
October 31, 2028
Last FAA action
April 3, 2024
Airworthiness
RestrictedFAA airworthiness class code 3 (the kind of airworthiness certificate it flies under and what it is approved for). Every aircraft with this code · All codes · Agriculture and pest controlFAA certificate purpose code 1 (the kind of airworthiness certificate it flies under and what it is approved for). All codes · March 9, 1979
FAA region
Great LakesFAA region code C (the FAA regional office that handles the record). All codes
FAA record id
00350974

Owner as the FAA publishes it

Name
Heritage AG LLC
Type
LLCFAA type of owner code 7 (who holds the registration: a person, a company, a trust or a government body). Every aircraft with this code · All codes
Address
9081 Cutler Rd
Lakeview, MI 48850-9714

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

1973-05-21North American NAVION · exported to Canada · Valid registration

Connections how N4004K links to the rest of the register

Design
Engine
Owner
Place
Airworthiness

The whole map of how records connect · these connections as data: /graph/aircraft/N4004K.json.

Records check free · 2 to understand · 3 clear

The public federal record on N4004K, 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 Heritage AG LLC, an LLC, certificate issued October 14, 2021, expires October 31, 2028. No fractional interest recorded. [1]

CLEARAirworthiness certificate

Restricted certificate for agriculture and pest control, dated March 9, 1979, consistent with the 1978 manufacture year. [1]

CLEARPrior registrations of this airframe

No earlier tail number is recorded against serial 2488R for this model in the deregistered file. [2]

ATTENTIONTail number reuse

N4004K was previously assigned to 1 other aircraft: North American NAVION (serial NAV-4-1004, cancelled May 21, 1973). 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]

ATTENTIONAccident and incident record

1 NTSB record under N4004K: Accident on June 20, 2024 at Stanwood, MI: no injuries, substantial damage. Details below. [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.

NTSB records 1

CEN24LA318Accident on June 20, 2024 at Stanwood, MI: no injuries, substantial damage.

Aircraft on the NTSB record: Ayres Corporation S2R · operated under 137

The pilot’s failure to maintain terrain clearance during a low-level aerial application flight, which resulted in impact with terrain and a subsequent forced landing. Contributing to the accident was the location of the spray boom pressure gauge, which required the pilot to divert his attention away from the airplane’s flight path, and the operator’s decision to locate the spray boom pressure gauge outside of the cockpit.

Full record in plain English · Docket and reports at the NTSB

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 November 5, 2026. registry.faa.gov/
  2. FAA deregistered aircraft file (part of the same download), file of November 5, 2026. registry.faa.gov/
  3. FAA document index: registry documents received in recent weeks, file of November 5, 2026. registry.faa.gov/
  4. NTSB aviation accident database (CAROL), records through October 28, 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, November 5, 2026. See this record on the FAA site · This record as data