Delta Airlines Flight 2001
Boeing 757 232 · Accident: turbulence encounter en route
From Boston Logan International Airport (KBOS) to Hartsfield Jackson Atlanta International Airport (KATL)
Narrative check · The NTSB narrative appears to contradict this record's aircraft involved. Values are shown as recorded, not corrected; compare with the narrative.
Event
- NTSB case
- DCA11CA060
- 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
- API-reported fatalities
- 0 · all aircraft and ground
- 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 757 232 Possible conflict
- Aircraft type
- Boeing 757
- 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
- N623DL
- Operator
- Delta Airlines
- Onboard fatalities
- Unknown
- Route
- From Boston Logan International Airport (KBOS), Boston, MATo Hartsfield Jackson Atlanta International Airport (KATL), Atlanta, GA
- Aircraft age
- Not recorded
- 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
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
On May 23, 2011 at about 1520 eastern daylight time, a Boeing 757-223, N623DL, operated by Delta Airlines as flight 2001, encountered turbulence while in cruise flight from Boston Logan International Airport (BOS), Boston, Massachusetts to Atlanta Hartsfield International Airport(ATL), Atlanta, Georgia. The flight was operated under the provisions of 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight. One passenger was seriously injured and one of the 4 flight attendants experienced a minor injury. None of the 2 flight crew, other 3 flight attendants, or other 180 passengers was injured. The airplane was not damaged, and continued the flight to Atlanta.
The flight crew reported that while in cruise flight at FL340, approximately 200 miles northeast of the destination, they were in an area of forecast convective weather and were maneuvering between two cells when they inadvertantly entered the edge of a cumulus buildup at the time of the turbulence. The seat belt sign was illuminated at this time, but the passenger was out of her seat and fell, resulting in a broken ankle.
Probable cause
Inadvertant encounter with convective turbulence while in cruise. Contributing to the severity of the accident was the unrestrained status of the passenger, contrary to the lighted seat belt sign.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DCA11CA060
- Event ID
- 20110525X42547
- Case number
- DCA11CA060
- 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, 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: 679bf4ad4ed7190b6dbfc546aef13e41739c37ca27c8570a31b442a8514323af; retrieved 2026-09-15T16:12:29.477Z.