Illustrative image; it may differ from the actual aircraft.

Bombardier Regional-Jet-700

XREGIONALJ-10066Unknown

RegistrationUSN504MJ

OperatorUnited Airlines

0operators

1incidents

0accidents

12logbook years

1photos

Bombardier Regional-Jet-700 built in 2002.

NewNearly newYoungMatureAgingOld

Aging · 24 years

Vuelopedia is a work in progress: it currently holds about 30% of the information we expect to have by the third quarter of 2027. Although we use only official, highly reliable sources, some aircraft data and history may still contain errors or inaccuracies. We work hard to clear every anomaly from the records using specialized verification tools.

Recent flights

Checking flight activity…

Technical data

ManufacturerBombardier

Engines2× GE CF34 SERIES

PropulsionJet

First flight2002

Country of registrationEstados Unidos

OwnerMesa Airlines Inc

MSN10066

Hex / ICAO 24-bitA649E8

VerificationPending check against the official civil register

Airports

Where this aircraft has operated, by period · source BTS (EE. UU.)

Flight logbook

Year-by-year activity · source BTS (EE. UU.)

2021

Mesa Airlines · 8 flights during the year · base Washington (IAD)

Main route of the year: Washington (IAD) → Detroit (DTW)

2020

Mesa Airlines · 1,034 flights during the year · base Washington (IAD)

Main route of the year: Washington (IAD) → Charlotte (CLT)

2019

Mesa Airlines · 1,487 flights during the year · base Washington (IAD)

Main route of the year: Washington (IAD) → Detroit (DTW)

54 days inactive

2018

Mesa Airlines · 1,647 flights during the year · base Washington (IAD)

Main route of the year: Washington (IAD) → New York (LGA)

33 days inactive

2013

Mesa Airlines · 1,810 flights during the year · base Chicago (ORD)

Main route of the year: Charlotte (CLT) → Washington (IAD)

2012

Mesa Airlines · 1,665 flights during the year · base Washington (IAD)

Main route of the year: Atlanta (ATL) → Chicago (ORD)

30 days inactive

2011

Mesa Airlines · 1,827 flights during the year · base Chicago (ORD)

Main route of the year: Chicago (ORD) → Charlotte (CLT)

2010

Mesa Airlines · 2,096 flights during the year · base Chicago (ORD)

Main route of the year: Charlotte (CLT) → Washington (IAD)

No reliable logbook records exist for this aircraft before 2006.

Aircraft chronology

2002

Built

Assembled by Bombardier.

Jul 10, 2018

Incident at Nashville

On July 10, 2018, the aircraft (registration N504MJ), operated by Mesa, was involved in an incident at Nashville. Source: the FAA (United States).

Source: FAA

Memories coming soon

The register of memories is not open on this aircraft yet. We are enabling it gradually, record by record, as we consolidate each aircraft's information.

Before opening it we check the aircraft identity — its registration, its serial number and its model — against the civil register of the authority that registered it, so that every memory belongs to the exact aircraft that lived it. When that work reaches this record, the register will open here.

Current position of the aircraft

Looking for a signal…

View on the adsb.lol live map

Real-time position via adsb.lol (ODbL license). There is a signal only while the aircraft is airborne and within coverage.

Gallery

External photographs under a Creative Commons license. Click to enlarge in a new tab.

Cite

To cite this page in academic work, an article or Wikipedia, choose the style and copy the reference. The access date is today.

This page was last updated on October 10, 2026

APA

Vuelopedia. (2026, October 10). Bombardier Regional-Jet-700 · N504MJ · United Airlines. Retrieved October 18, 2026, from https://vuelopedia.org/en/aircraft/XREGIONALJ-10066

MLA

“Bombardier Regional-Jet-700 · N504MJ · United Airlines.” Vuelopedia, Fundación Poderia, 10 Oct. 2026, vuelopedia.org/en/aircraft/XREGIONALJ-10066. Accessed 18 Oct. 2026.

Chicago

Vuelopedia. “Bombardier Regional-Jet-700 · N504MJ · United Airlines.” Fundación Poderia. Last modified October 10, 2026. https://vuelopedia.org/en/aircraft/XREGIONALJ-10066.

Harvard

Vuelopedia (2026) Bombardier Regional-Jet-700 · N504MJ · United Airlines. Available at: https://vuelopedia.org/en/aircraft/XREGIONALJ-10066 (Accessed: 18 October 2026).

BibTeX

@misc{vuelopedia_en_aircraft_xregionalj_10066,
  author       = {{Vuelopedia}},
  title        = {{Bombardier Regional-Jet-700 · N504MJ · United Airlines}},
  publisher    = {Fundación Poderia},
  year         = {2026},
  date         = {2026-10-10},
  url          = {https://vuelopedia.org/en/aircraft/XREGIONALJ-10066},
  howpublished = {\url{https://vuelopedia.org/en/aircraft/XREGIONALJ-10066}},
  urldate      = {2026-10-18},
  note         = {Accessed 2026-10-18}
}

Wikipedia

{{cite web |url=https://vuelopedia.org/en/aircraft/XREGIONALJ-10066 |title=Bombardier Regional-Jet-700 · N504MJ · United Airlines |website=Vuelopedia |publisher=Fundación Poderia |date=2026-10-10 |access-date=2026-10-18 |language=en}}