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NTSB Report
September 30, 2020 · Boeing 777 200-ER · N860DA
Anchorage, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 30, 2020
Injury Outcomes
1 injury (1 serious injury), 251 uninjured
Location
Anchorage, AK
Aircraft
Boeing 777 200-ER (1999)
Tail Number
N860DA
Operator
Delta Airlines
Injuries
Serious
NTSB Number
DCA21LA018
The airplane was in cruise flight when it encountered turbulence over the Aleutian Islands, a chain of mountainous volcanic islands west of the Alaskan peninsula. A flight attendant standing in the aft main cabin galley during the encounter fell onto the galley cart restraint latch, injuring her top left rib. She was subsequently diagnosed with a fractured rib. Post-accident examination of the weather data indicated that about the time of the injury, there was evidence of a short duration turbulence event while the aircraft flew over the Aleutian Islands. The flight crew did not recall any notable turbulence during the flight, and there were no pilot reports (PIREPs) or inflight weather advisories current for the area.
NTSB Probable Cause
Environmental issues-Conditions/weather/phenomena-Turbulence-Terrain induced turbulence-Awareness of condition
Full Narrative
The airplane was in cruise flight when it encountered turbulence over the Aleutian Islands, a chain of mountainous volcanic islands west of the Alaskan peninsula. A flight attendant standing in the aft main cabin galley during the encounter fell onto the galley cart restraint latch, injuring her top left rib. She was subsequently diagnosed with a fractured rib. Post-accident examination of the weather data indicated that about the time of the injury, there was evidence of a short duration turbulence event while the aircraft flew over the Aleutian Islands. The flight crew did not recall any notable turbulence during the flight, and there were no pilot reports (PIREPs) or inflight weather advisories current for the area.
Flight
Event TypeAccident
Event Time11:00 AKDT
Nearest Airport0nm
Flight Plan FiledIFR
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBoeing 777 200-ER
Tail NumberN860DA
Aircraft CategoryAir
OperatorDelta Airlines
Operating RulePart 121
Engines2
Engine TypeTurbofan
Engine DetailsRolls Royce · Trent 892-17 · Turbofan · 93400 | Rolls Royce · Trent 892-17 · Turbofan · 93400
Seats304
People & Injuries
Injury Summary1 injury (1 serious injury), 251 uninjured
Fatal0
Serious1
Minor0
Uninjured251
Total252
Crew 1Age 61 · First Class · None
Crew 2Age 53 · First Class · None
Crew 3Age 61 · First Class · None
Crew 4Serious
Conditions
ConditionsUnknown
LightNr
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0