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Boeing 787-9 · N29984 · United Airlines

Boeing 787-9 illustration in United Airlines livery Illustrative image; it may differ from the actual aircraft.

Boeing 787-9

B787-66143Active
RegistrationUSN29984
Verified aircraft dataagainst the official civil aviation registerWhat does this badge mean?We checked that this aircraft’s registration, serial number and model match the official civil aviation register: FAA (United States), data as of Oct 8, 2026.That makes its identity more reliable. The verification expires after 12 months: if the register stops confirming it, the badge disappears.How we verify
OperatorUnited Airlines
1operators
2incidents
0accidents
6logbook years
3photos

Boeing 787-9 built in 2020 in Everett / Charleston (USA). Operates for United Airlines.

NewNearly newYoungMatureAgingOld
Nearly new · 6 years · ≈ 28,800 flight hours (approx.)
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

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Technical data

ManufacturerBoeing
Engines2× 2 x Genx-1B
PropulsionTurbofan
Seats257 (C48 · W21 · Y188)
First flight2020
Built inEverett / Charleston (EE. UU.)
Country of registrationEstados Unidos
OwnerUnited
MSN66143
Hex / ICAO 24-bitA31A76
VerificationIdentity verified against the official register of FAA (United States) · Oct 8, 2026

The model · Boeing 787 Dreamliner

Figures for the 787-9 variant, the most representative of the family · it is 60% the length of a football pitch

Length62.8 m206 ft
Wingspan60.1 m197 ft
Height17.0 m56 ft
Range14,010 km7,565 NMWith a typical passenger load
Cruise speed903 km/h488 ktMach 0.85
Service ceiling13,100 m42,979 ftIt flies above Everest (1.5 times its height)
Maximum take-off weight259,228 kg571,499 lb
Maximum payload130,408 kg287,500 lbIts 296 passengers with baggage would weigh about 29.6 t; the rest is fuel and cargo
Typical capacity296 passengersUp to 420 in a high-density layout
Endurance15 h 31 minAt cruise speed, non-stop

With its 14,010 km range, from Newark it could fly non-stop as far as:

BKKBangkok13,947 kmHKGHong Kong12,960 kmJNBJohannesburg12,865 kmBOMMumbai12,546 kmPVGShanghai (Pudong)11,860 km
Beyond its rangeAKLAuckland14,186 km

The type first flew in 2009 (17 years ago) · About 1,150 units built · Still in production

Figures for the type, not for this particular aircraft: each variant and each configuration changes something. They are shown in both systems used in aviation.

The full story of the Boeing 787 Dreamliner Compare this aircraft

Seating layout

48Business
21Premium
188Economy

257 seats in total

Airports

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

2020–2025United Airlines · 6 years
Main base
EWRNewark4 yearsSFOSan FranciscoLAXLos Angeles
Also flew to
IAHHoustonIADWashingtonDENDenverORDChicago

Flight logbook

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

2025
United Airlines · 71 flights during the year · base Newark (EWR)
Main route of the year: Newark (EWR) → San Francisco (SFO)
44 days inactive
2024
United Airlines · 82 flights during the year · base Newark (EWR)
Main route of the year: Newark (EWR) → San Francisco (SFO)
63 days inactive
2023
United Airlines · 73 flights during the year · base Los Angeles (LAX)
Main route of the year: Washington (IAD) → Los Angeles (LAX)
44 days inactive
2022
United Airlines · 70 flights during the year · base Newark (EWR)
Main route of the year: Denver (DEN) → Newark (EWR)
78 days inactive
2021
United Airlines · 72 flights during the year · base San Francisco (SFO)
Main route of the year: San Francisco (SFO) → Houston (IAH)
70 days inactive
2020
United Airlines · 11 flights during the year · base Newark (EWR)
Main route of the year: San Francisco (SFO) → Newark (EWR)

Aircraft chronology

2020
Built
Assembled by Boeing in Everett / Charleston (USA).
Sep 30, 2020
Delivered to United Airlines
Delivered to United Airlines as N29984.
Nov 3, 2021
Incident at San Francisco (SFO) International Airport
On November 3, 2021, the Boeing 787-9 Dreamliner aircraft (registration N29984), operated by United Airlines, was involved in an incident at San Francisco (SFO) International Airport (United States) due to a ground collision with another aircraft while taxiing. Source: United Airlines.
Source: United Airlines
Oct 8, 2026
Incident at Tokyo/Narita (NRT) International Airport
On October 8, 2026, the Boeing 787-9 Dreamliner aircraft (registration N29984), operated by United Airlines, was involved in an incident at Tokyo/Narita (NRT) International Airport (Japan) due to the overheating or fire of an electronic device on board. Source: United Airlines.
What happened
On arrival at Tokyo-Narita of flight UA7 from Houston-Intercontinental, a passenger’s power bank went into thermal runaway and caught fire in the cabin, partially burning a seat. No injuries were reported.
Source: United Airlines

Operators

2020-09-30
United Airlines
Registration N29984

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Current position of the aircraft

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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.

External photograph of the aircraft
LN9267 · Creative Commons (CC BY-SA)
External photograph of the aircraft
LN9267 · Creative Commons (CC BY-SA)
External photograph of the aircraft
LN9267 · Creative Commons (CC BY-SA)

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). Boeing 787-9 · N29984 · United Airlines. Retrieved October 16, 2026, from https://vuelopedia.org/en/aircraft/B787-66143

MLA

“Boeing 787-9 · N29984 · United Airlines.” Vuelopedia, Fundación Poderia, 10 Oct. 2026, vuelopedia.org/en/aircraft/B787-66143. Accessed 16 Oct. 2026.

Chicago

Vuelopedia. “Boeing 787-9 · N29984 · United Airlines.” Fundación Poderia. Last modified October 10, 2026. https://vuelopedia.org/en/aircraft/B787-66143.

Harvard

Vuelopedia (2026) Boeing 787-9 · N29984 · United Airlines. Available at: https://vuelopedia.org/en/aircraft/B787-66143 (Accessed: 16 October 2026).

BibTeX

@misc{vuelopedia_en_aircraft_b787_66143,
  author       = {{Vuelopedia}},
  title        = {{Boeing 787-9 · N29984 · United Airlines}},
  publisher    = {Fundación Poderia},
  year         = {2026},
  date         = {2026-10-10},
  url          = {https://vuelopedia.org/en/aircraft/B787-66143},
  howpublished = {\url{https://vuelopedia.org/en/aircraft/B787-66143}},
  urldate      = {2026-10-16},
  note         = {Accessed 2026-10-16}
}

Wikipedia

{{cite web |url=https://vuelopedia.org/en/aircraft/B787-66143 |title=Boeing 787-9 · N29984 · United Airlines |website=Vuelopedia |publisher=Fundación Poderia |date=2026-10-10 |access-date=2026-10-16 |language=en}}