The U.S. aircraft register, updated daily
N451WN, a Boeing 737-7H4
N451WN itself. Photo: Colin Brown Photography, CC BY 2.0, via Wikimedia Commons. More: Planespotters · JetPhotos · Airliners.net.
Registered aircraft · FAA record as of October 23, 2026
N451WN

Boeing 737-7H4

ValidFAA registration status code V: Valid registration. All codesTexas

N451WN is a Boeing 737-7H4, a fixed-wing airplane with more than one motor with turbofan engines, built in 2004. It has 143 seats. It is registered to Southwest Airlines CO, a corporation in Dallas, Texas. The registration is valid: it was issued on March 26, 2004 and expires on January 31, 2030. It holds a standard airworthiness certificate for transport, dated February 25, 2004.

Where is it now Last seen yesterday at 8:55 pm.

Last seen yesterday at 8:55 pm. Checking whether it is in the air right now…

Aircraft broadcast their own position; volunteer receivers pool what they hear. Owners who have asked the FAA not to be displayed are not shown.

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

Aircraft

Maker
Boeing
Model
737-7H4 · all 737-7H4s and related versions
Built of
aluminium
The airframe is aluminium: sheet metal over a riveted frame, the way most aircraft have been built since the 1940s. This is how the Boeing 737 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
32495
Type
Fixed-wing, multi-engineFAA type of aircraft code 5 (the FAA's broad category for the airframe). Every aircraft with this code · All codes
Power
TurbofanFAA type of engine code 5 (what powers it, as the FAA classes engines). Every aircraft with this code · All codes, 2 motors · Cfm Intl. CFM56 SERIES · 2200 hp
Seats
143
Year built
2004
Transponder code
A577D4 (octal 51273724)

Registration

Status
Valid registrationFAA registration status code V (whether the registration certificate is in force). Every aircraft with this code · All codes
Certificate issued
March 26, 2004
Expires
January 31, 2030
Last FAA action
September 29, 2023
Airworthiness
StandardFAA airworthiness class code 1 (the kind of airworthiness certificate it flies under and what it is approved for). Every aircraft with this code · All codes · TransportFAA certificate purpose code T (the kind of airworthiness certificate it flies under and what it is approved for). All codes · February 25, 2004
FAA region
SouthwesternFAA region code 2 (the FAA regional office that handles the record). All codes
FAA record id
00059929

Owner as the FAA publishes it

Name
Southwest Airlines CO
Type
CorporationFAA type of owner code 3 (who holds the registration: a person, a company, a trust or a government body). Every aircraft with this code · All codes
Address
2702 Love Field Dr # Hdq-4Gc
Dallas, TX 75235-1908

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 N451WN links to the rest of the register

Design
Engine
Owner
Place
Live

The whole map of how records connect · these connections as data: /graph/aircraft/N451WN.json.

Records check free · 0 to understand · 5 clear

The public federal record on N451WN, 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 Southwest Airlines CO, a corporation, certificate issued March 26, 2004, expires January 31, 2030. No fractional interest recorded. [1]

CLEARAirworthiness certificate

Standard certificate for transport, dated February 25, 2004, consistent with the 2004 manufacture year. [1]

CLEARPrior registrations of this airframe

No earlier tail number is recorded against serial 32495 for this model in the deregistered file. [2]

CLEARTail number reuse

No other airframe has carried N451WN 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 N451WN. 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