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.
Aircraft
- Maker
- Embraer
- Model
- EMB-145XR · all EMB-145XRs and related versions
- Serial number
- 145703
- Type
- Fixed-wing, multi-engine
- Power
- Turbofan, 2 motors · Rolls-Royc AE3007 SER · 6,442 lb thrust
- Seats
- 55
- Year built
- 2003
- Transponder code
- A1BFF9 (octal 50337771)
Registration
- Status
- Valid registration
- Certificate issued
- August 27, 2019
- Expires
- August 31, 2029
- Last FAA action
- August 25, 2023
- Airworthiness
- Standard · Transport · February 25, 2005
- FAA region
- Great Lakes
- FAA record id
- 00038099
Owner as the FAA publishes it
- Name
- United Airlines INC
- Type
- Corporation
- 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.
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 2, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 2, 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 2, 2026. See this record on the FAA site · This record as data