United Airlines Flight 115
Boeing 787-9 · Accident: turbulence encounter en route
From San Francisco, CA to Tahiti
Event
- NTSB case
- DCA26LA167
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- Event fatalities
- Unknown
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Boeing 787-9
- Aircraft type
- Boeing 787
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N23994
- Operator
- United Airlines
- Onboard fatalities
- Unknown
- Route
- From San Francisco, CATo Tahiti
- Aircraft age
- About 1 year (built 2025)
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 121: Air Carrier
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- En route · cruise
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Turbulence encounter
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- None
Cause areas
- Environmental issues › Conditions/weather/phenomena
Not plotted · Location withheld: coordinates are missing, conflicting, invalid, or have no accepted acquisition method. No substitute location has been invented.
NTSB narrative
On March 29, 2026, about 1456 pacific daylight time (PDT), United Airlines flight 115, encountered moderate turbulence while in cruise flight at FL300 en route to Faa’a (Tahiti) International Airport (NTAA) Papeete, French Polynesia. Of the 164 passengers and crew onboard, one flight attendant sustained a serious injury. The flight was operating under Title 14 Code of Federal Regulations Part 121 as a regularly scheduled international passenger flight from San Francisco International Airport (SFO), San Francisco, California to NTAA. According to the flight crew, dispatch had planned the flight at FL300 due to forecast turbulence between FL320 and FL380 off the California coast. After departure, the flight attendants remained seated until the airplane reached cruise altitude at FL300 and conditions were deemed suitable to begin cabin service. During the first 90 minutes of flight, the airplane encountered intermittent light turbulence, resulting in multiple communications with dispatch and periodic illumination of the seatbelt sign. Dispatch advised that the greatest turbulence risk was expected between latitudes 34°N and 30°N. About 95 minutes after departure, the airplane encountered a jolt of moderate clear air turbulence with no corresponding returns displayed at altitude on the onboard weather radar. The sudden encounter with moderate turbulence resulted in two flight attendants falling. The flight crew immediately directed the flight attendants to be seated and notified dispatch of the turbulence encounter. Dispatch advised that the airplane had recently crossed the subtropical jet stream, a condition unknown to the flight crew at the time. Shortly thereafter, the cockpit was informed that a flight attendant had been injured. Following notification of the injury, the flight crew coordinated with dispatch and MedLink and requested emergency medical services to meet the airplane upon arrival. A physician traveling onboard evaluated the injured flight attendant and recommended diagnostic imaging upon landing. The flight attendant was subsequently transported to a hospital, where they were diagnosed with a serious injury. At the time of the flight’s turbulence encounter there were no active inflight weather advisories or company issued advisories for the area.
Probable cause
An unanticipated encounter with clear air turbulence while in cruise flight.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DCA26LA167
- Event ID
- 20260330202721
- Case number
- DCA26LA167
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, cause areas, damage. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: e35b6e62ca42a9872e8f5f9492f6f6e10bb66531cb69bb8128ffb07818498d89; retrieved 2026-09-16T21:06:45.951Z.