- Date
- March 29, 2026
- Place
- Pacific Ocean (Pacific Ocean)
- Injuries
- 1 serious, 164 uninjured
- Damage
- No damage
- Phase of flight
- Enroute
- Aircraft
- N23994Boeing 787-9
- Defining event
- Enroute-cruise: Turbulence encounter
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 20, 2026
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Major Investigations Division
- Parties
- FAA
- FAA reports
- 20260329013029A20260329013039A
- Case key
- 202721
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
An unanticipated encounter with clear air turbulence while in cruise flight.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
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.
Aircraft
- Registration
- N23994
- Reported as
- Boeing 787-9
- Category
- Airplane
- Serial number
- 68622
- Built
- 2025
- Airframe hours
- 4,347
- Engines
- GE GENX-1B76AP2G01, 76,100 lbs thrust, turbo fanGE GENX-1B76AP2G01, 76,100 lbs thrust, turbo fan
- Damage
- No damage
- Flight
- Part 121
- Operator
- United Airlines Inc
- Registered owner
- United Airlines Inc
- Airworthiness certificate
- Standard, Transport
- Departed
- San Francisco, CA
- Destination
- Tahiti, OF
- Flight plan
- IFR
- Equipment
- ADS-B, Electronic multifunction display, Electronic primary flight display, Onboard weather, Satellite tracking device, Stall warning system, Electronic flight bag or handheld device, Data recorder, Auto-pilot, Angle of attack indicator
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew · 3
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 63
- Certificate
- Airline transport
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Helicopter, Airplane
- Medical
- Class 1, With waivers/limitations
- Last flight review
- February 6, 2026
- Seat
- Left
- Restraint
- Lap only
- Flight hours
- 14,500 total · 800 in this make and model · 10,000 as pilot in command · 149 in the last 90 days · 66 in the last 30 days · 0 in the last 24 hours
- Role
- Co-pilot
- Age
- 31
- Injuries
- None
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Without waivers/limitations
- Last flight review
- March 7, 2026
- Restraint
- Lap only
- Flight hours
- 5,680 total · 145 in this make and model · 1,331 as pilot in command · 145 in the last 90 days · 65 in the last 30 days
- Role
- Other flight crew
- Flight hours
- 10,118 total
Weather
- Conditions
- Visual (VMC) · Day
Docket · 2
The files NTSB released with the investigation on August 20, 2026, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 MB in all.
FAA reports on this event · 2
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.