Boeing 787 Dreamliner (Family)
The Boeing 787 Dreamliner family is a widebody, long-range twinjet built around a majority-composite airframe, more-electric systems architecture, and high-bypass turbofans (GEnx-1B and Rolls-Royce Trent 1000). It comprises three variants, the 787-8, 787-9, and 787-10, sharing a common type rating and fleet-defining events including the 2013 lithium-ion battery grounding, prolonged Trent 1000 powerplant reliability issues, and the first fatal hull loss of the type in June 2025.
Sources and editorial review
Awaiting editorial verification · Legacy analysis. Archive counts describe this collection; they are not aircraft safety rates.
Fleet totals are withheld until their sources have been reviewed.
In BlackBoxWiki Archive
Figures count recorded events, including incidents. Multi-aircraft events can appear under more than one aircraft family; casualty totals describe the whole event.
More-Electric Architecture and Lithium-Ion Integration
The 787 was the first commercial transport to replace pneumatic bleed-air systems with high-power electric starters, compressors, and cabin pressurisation. To feed the ~1.45 MW electrical load, Boeing selected GS Yuasa lithium-cobalt-oxide main and APU batteries. Insufficient cell-to-cell thermal isolation, an uncontained internal short in a JAL 787-8 APU battery at Boston (Jan 2013) and a main-battery smoke event on an ANA 787-8 into Takamatsu (Jan 2013) triggered FAA Emergency AD 2013-02-11 and the first fleet-wide grounding of a modern airliner since the DC-10 in 1979.
Composite Airframe, Lightning, and Barrel Construction
Around 50% of the 787's structural weight is carbon-fibre reinforced plastic (CFRP), including one-piece barrel fuselage sections. Unlike aluminium, CFRP is not naturally conductive, so Boeing integrated copper mesh into the skin and metallic fasteners into fuel-tank areas to dissipate lightning energy and prevent structural delamination or fuel-vapour ignition. Subsequent FAA-directed audits of the Charleston final-assembly line examined shimming gaps, fuselage-join alignment, and traceability of composite repair records.
GEnx-1B and Trent 1000 Powerplant Reliability
Both 787 powerplants have driven sustained airworthiness campaigns. The Rolls-Royce Trent 1000 (Package B, TEN, and later builds) suffered intermediate-pressure turbine and compressor blade corrosion/cracking that at its peak grounded dozens of aircraft simultaneously. The GEnx-1B experienced ice-crystal icing (ICI) in the HPC core, prompting flight-envelope restrictions in convective weather, plus PIP2 software revisions to prevent fan-blade rub during icing shedding events.
Air India Flight 171 and the First Fatal Hull Loss
On 12 June 2025 an Air India 787-8 (VT-ANB, AI171) lost thrust on both engines shortly after rotation from Ahmedabad and struck a medical-college hostel in the Meghaninagar district, killing all but one of 242 occupants and multiple people on the ground for a combined 260 fatalities. India's AAIB preliminary report, released in July 2025, documented that both engine fuel-control switches were found in CUTOFF within seconds of liftoff, with cockpit voice recorder audio in which one pilot asked the other why the fuel had been cut. The investigation is examining the fuel-control switch design (subject of an earlier FAA Special Airworthiness Information Bulletin on locking-detent wear), post-takeoff crew coordination on twin-engine widebodies, and the RAT-only reconfiguration flight path.
Notable Accidents
- JAL 787 (BOS)· 2013APU lithium-ion battery thermal runaway while parked at Boston Logan; contributed to FAA Emergency AD 2013-02-11 and global grounding.
- ANA Flight 692· 2013Main-battery smoke indications forced an emergency landing at Takamatsu; second thermal-runaway event within a week.
- Ethiopian 787 (LHR)· 2013Ground fire on a parked 787-8 traced to a short-circuit in the lithium-manganese-dioxide ELT battery; first structural composite fuselage repair of its kind.
- LATAM Flight 800· 2024787-9 in-flight upset over the Pacific injuring dozens; investigation focused on cockpit seat movement and thrust-lever inputs, not a hull loss.
- Air India Flight 171· 2025First fatal hull loss of the type. Boeing 787-8 VT-ANB crashed seconds after takeoff from Ahmedabad; AAIB preliminary report cited both fuel-control switches transitioning to CUTOFF just after liftoff. 260 fatalities (241 of 242 on board plus 19 on the ground).
Recurring Causal Patterns
- Lithium-ion battery thermal runaway from internal cell short-circuiting (2013)
- Trent 1000 intermediate-pressure turbine blade corrosion and fatigue cracking
- GEnx-1B ice-crystal icing in the high-pressure compressor core
- Software-induced electrical power reset requirements (248-day counter, GCU cycling)
- Fuel-control switch state / dual-engine loss shortly after takeoff (AI171, under investigation)
Regulatory & Industry Response
- FAA Emergency Airworthiness Directive 2013-02-11, global 787 grounding
- Mandatory stainless-steel battery enclosure and high-pressure vent tube retrofit
- AD 2016-07-12, GEnx-1B PIP2 software update against icing-induced fan-blade rub
- Multiple EASA/FAA ADs on Trent 1000 IPT blade life limits and inspection intervals
- FAA SAIB NM-18-33, 787/737 fuel-control switch locking-feature inspection (revisited following AI171)
- AAIB India preliminary report (July 2025) on AI171; ongoing NTSB / FAA / Boeing participation
Top Causes in Archive
Case Files in Archive (1)
Verdict
For its first 14 years the 787 family held a zero-fatality service record despite a globally unprecedented grounding, prolonged engine reliability programmes, and quality-escape investigations at Boeing's South Carolina line. That record ended with Air India Flight 171 in June 2025, the first fatal hull loss of the type. The family remains statistically among the safest widebodies in service, but the AI171 investigation is expected to reshape assumptions about high-lift system state monitoring, fuel-control switch guarding, and post-takeoff dual-engine loss training on modern FBW twins.