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Embraer EMB-145XR
N21129 is an Embraer EMB-145XR, a fixed-wing airplane with more than one motor with turbofan engines, built in 2003. It has 55 seats. It is registered to United Airlines INC, a corporation in Chicago, Illinois. The registration is valid: it was issued on August 27, 2019 and expires on August 31, 2029. It holds a standard airworthiness certificate for transport, dated February 25, 2005.
Where is it now Last seen Friday at 7:35 pm.
Last seen Friday at 7:35 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
- Embraer
- Model
- EMB-145XR · all EMB-145XRs and related versions
- Built of
- aluminiumThe airframe is aluminium: sheet metal over a riveted frame, the way most aircraft have been built since the 1940s. This is how the Embraer EMB-145 ERJ 145 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
- 145703
- 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 · Rolls-Royc AE3007 SER · 6,442 lb thrust
- Seats
- 55
- Year built
- 2003
- Transponder code
- A1BFF9 (octal 50337771)
Registration
- Status
- Valid registrationFAA registration status code V (whether the registration certificate is in force). Every aircraft with this code · All codes
- Certificate issued
- August 27, 2019
- Expires
- August 31, 2029
- Last FAA action
- August 25, 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, 2005
- FAA region
- Great LakesFAA region code C (the FAA regional office that handles the record). All codes
- FAA record id
- 00038099
Owner as the FAA publishes it
- Name
- United Airlines INC
- 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
- 233 S Wacker Dr
Chicago, IL 60606-7147
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 N21129 links to the rest of the register
- Embraer EMB-145 ERJ 145 313 registered
- Embraer 663 aircraft on the register
- Built of aluminium · as the model family is built; the register does not record it per aircraft
- Rolls-Royce AE3007 series 185 aircraft with this engine series · 6,442 lb thrust
- United Airlines INC 1,216 aircraft in the fleet
- Chicago, IL 1,559 aircraft registered in this town
- Chicago Midway International · MDW
- Chicago O'Hare International · ORD
- Lansing Municipal · IGQ
- Illinois 8,050 aircraft registered
- FAA orders naming the Embraer EMB-145 ERJ 145 128 airworthiness directives
- Failure reports filed on the Embraer EMB-145 ERJ 145 52,474 reports since 1995
- Approved modifications for the Embraer EMB-145 ERJ 145 87 supplemental type certificates
- FAA orders naming the Rolls-Royce AE3007 series 16 airworthiness directives
- Failure reports on the Rolls-Royce AE3007 series 304 reports since 1995
- Report filed on this aircraft: Sign, inoperative · 2026-04-03
- Report filed on this aircraft: Lamp, inoperative · 2026-03-26
- Report filed on this aircraft: Sign, detached · 2026-02-18
- Where N21129 is now · Last seen Friday at 7:35 pm.
The whole map of how records connect · these connections as data: /graph/aircraft/N21129.json.
Records check free · 1 to understand · 4 clear
The public federal record on N21129, 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.
Valid registration to United Airlines INC, a corporation, certificate issued August 27, 2019, expires August 31, 2029. No fractional interest recorded. [1]
Standard certificate for transport, dated February 25, 2005, consistent with the 2003 manufacture year. [1]
No earlier tail number is recorded against serial 145703 for this model in the deregistered file. [2]
No other airframe has carried N21129 according to the deregistered file. [2]
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]
1 NTSB record under N21129: Incident on September 25, 2025 at Roanoke, VA: no injuries, minor damage. Details below. [4]
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.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
NTSB records 1
Aircraft on the NTSB record: Embraer EMB-145XR · operated under 121
On September 24, 2025, at 2117 eastern daylight time (EDT), CommuteAir (dba United Express flight 4339), Embraer EMB-145XR, N21129, experienced a runway excursion while landing at Roanoke-Blacksburg Regional Airport (ROA), Roanoke, Virginia (VA). The airplane overran the end of runway 34 and came to rest in the engineered materials arresting system (EMAS). There were no injuries to the 3 crew and 50 passengers onboard and there was no damage to the airplane. The scheduled domestic passenger flight was operating under the provisions of Title 14 Code of Federal Regulations Part 121 from Washingt…
Full record in plain English · Docket and reports at the NTSB
- FAA Releasable Aircraft Database, master file, file of October 23, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 23, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 23, 2026. registry.faa.gov/
- 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