Boeing 787-9
The Boeing 787-9 Dreamliner is the middle and longest-range member of the Boeing 787 Dreamliner family. It is a 6.1-metre stretch of the 787-8, retaining the family's composite airframe, high-aspect-ratio wing, more-electric systems and choice of General Electric GEnx-1B or Rolls-Royce Trent 1000 engines. The 787-9 first flew on 17 September 2013 and entered service with Air New Zealand in 2014.[1][2]
Development
Boeing planned the 787 as a family rather than a single-size aircraft. The 787-9 added fuselage length and capacity to the original 787-8 while preserving its wing span, flight-deck concept and engine choices. The first aircraft began flight testing on 17 September 2013, starting the certification programme for the stretched model.[1][3]
The 787-9 was added to Boeing's FAA type certificate T00021SE and delivered to launch customer Air New Zealand in June 2014. Air New Zealand placed the aircraft into scheduled service the following month. Certification and delivery are separate milestones: the type certificate approves the model design, while each production aircraft also requires conformity, customer acceptance and individual airworthiness documentation.[1][4]
The variant developed into the family's principal long-range model, positioned between the smaller 787-8 and the longer, higher-capacity 787-10. Its range and payload allow airlines to operate long thin routes, replace older widebodies and add frequency without using the capacity of a 777-300ER or Airbus A380.
In March 2026 the FAA certified an optional increased maximum take-off weight for the 787-9. Boeing said the approximately 4,540-kilogram increase can provide roughly three tonnes of additional payload or more than 300 nautical miles of additional range, depending on the mission. Aircraft assembled from December 2025 were structurally capable, but activation is selected and certified per airframe; it should not be assumed for every 787-9.[5]
Design
Airframe and aerodynamics
The 787-9 is 62.8 metres long and has the same 60.1-metre wing span as the other principal 787 variants. Much of the primary fuselage and wing structure uses carbon-fibre-reinforced composite material. Large one-piece fuselage barrel sections reduce the number of longitudinal joints compared with conventional panel construction.[2][6]
The swept wing has a flexible composite structure, raked tips and high-lift devices controlled by the fly-by-wire system. Its visible upward deflection in flight is a normal consequence of the wing's structural and aerodynamic design. The aircraft uses two four-wheel main landing-gear trucks and a twin-wheel nose gear.
Compared with the 787-8, the longer fuselage increases passenger and lower-deck cargo capacity. The 787-9 can carry 20 LD-3 containers in the forward hold and 16 aft, with an additional bulk compartment in Boeing's planning layout. Container positions and actual payload depend on the operator's loading system and weight-and-balance limits.[6]
Electrical and environmental systems
The 787 family uses electrically powered systems for functions that traditionally relied more extensively on pneumatic bleed air. Engine-driven generators support environmental-control compressors, wing ice protection and other large electrical loads. This architecture does not make the aircraft “all electric”: hydraulic, fuel and mechanical systems remain integral to the design.
Cabin pressurisation supports a lower nominal cabin altitude than many earlier widebody aircraft. Higher humidity capability, large electronically dimmable windows, LED lighting and large overhead bins are common family features. Airline seating, galley and lavatory layouts vary substantially.[2]
Flight deck
The two-pilot flight deck uses five large displays, dual head-up displays, an electronic flight bag and fly-by-wire controls. The 787-8, -9 and -10 share a common type-rating framework subject to approved differences training. Software and hardware standards evolve through production changes and service bulletins, so individual-aircraft capability should be sourced to its approved configuration.
Engines
Airlines can select General Electric GEnx-1B or Rolls-Royce Trent 1000 engines. Both are high-bypass turbofans with full-authority digital engine control and nacelles with chevron trailing edges. Engine choice is recorded per aircraft and should not be inferred solely from operator-wide fleet policy.
GE lists the GEnx-1B74/75 as its representative 787-9 model, with a 111.1-inch fan and nominal take-off thrust of about 74,100 pounds-force. Exact approved marks and ratings vary by installation and weight option.[7]
Rolls-Royce introduced the Trent 1000 TEN as a common standard capable of powering all 787 variants. Later durability improvements led to the Trent 1000 XE production standard and retrofit programme. These names identify engine build and modification standards, not different aircraft variants.[8][9]
Specifications
| Characteristic | 787-9 |
| Flight crew | 2 |
| Typical two-class seating | 250–325 |
| Length | 62.8 m |
| Wingspan | 60.1 m |
| Height | 17.0 m |
| Maximum take-off weight | up to 259,220 kg with iMTOW option |
| Published range | up to 8,300 nmi (15,370 km) |
| Lower-deck cargo volume | about 172.4 m³ |
| Usable fuel | about 126,429 litres |
| Engines | 2 × GEnx-1B or Trent 1000 |
Boeing's 250–325-seat range is a representative two-class planning figure. The airport-planning document also illustrates a 290-seat dual-class cabin and identifies an FAA exit limit of 420, neither of which dictates an airline's installed layout. Range varies with configuration, payload, reserves, route, weather and airport constraints.[2][6]
Production
Early 787-9s were assembled at both Everett, Washington, and North Charleston, South Carolina. Boeing consolidated all 787 final assembly at North Charleston in 2021. Major sections and systems continue to come from a geographically distributed supplier network before final integration, testing, painting and delivery.[10][11]
Production-list records should distinguish manufacturer serial number, line number, test registration, customer registration and delivery date. A completed airframe can spend time in rework or storage before delivery, and later airline or lessor transfers do not add to Boeing's new-build delivery total.[12]
Operators and use
Air New Zealand was the launch operator. The type has subsequently entered service with carriers including Air Canada, Air China, Air France, American Airlines, All Nippon Airways, British Airways, Ethiopian Airlines, Etihad Airways, Japan Airlines, KLM, Korean Air, Lufthansa, Qantas, Qatar Airways, Saudi Arabian Airlines, Turkish Airlines, United Airlines and Virgin Atlantic.[12]
The list is illustrative rather than a current fleet census. Registrations, leases, storage and operator status change frequently and require a current civil-register, airline or fleet-database source.
The 787-9 is used for missions ranging from medium-haul widebody services to ultra-long-haul routes. Its capacity-range balance has enabled nonstop city pairs that were difficult to support with larger aircraft. Operational claims for a particular route should distinguish scheduled block distance from still-air design range and actual payload capability.
Increased-weight configuration
The 2026 iMTOW option raises the published maximum take-off weight to 571,500 pounds (259,220 kilograms). Boeing described this as a configurable capability: structurally capable aircraft may be certified at a lower operating weight if that better fits an airline's network economics and airport charges.[5][6]
The change does not alter the 787-9's external dimensions or create a separate marketing variant. At registration level, the applicable certified weight should be sourced from operator, regulator or aircraft documentation rather than inferred from construction date alone.
Related pages
Sources
787 Dreamliner family specifications — Boeing
GEnx engine — GE Aerospace
Trent 1000 — Rolls-Royce