Delta Air Lines Flight 737
Airbus Industrie A320-212 · Accident: near midair/TCAS alert/loss of separation en route
From Hartsfield Jackson Atlanta International Airport (ATL) to DCA · Arlington, VA
Event
- NTSB case
- DCA25LA306
- 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
- Unknown
Airbus Industrie A320-212
- Aircraft type
- Airbus A320
- 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
- N373NW
- Operator
- Delta Air Lines
- Onboard fatalities
- Unknown
- Route
- From Hartsfield Jackson Atlanta International Airport (ATL), Atlanta, GATo DCA · Arlington, VA
- Aircraft age
- About 24 years (built 2001)
- 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 · descent
- 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
- Near midair/TCAS alert/loss of separation
- 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
- Personnel issues › Task performance
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
On August 28, 2025, Delta Air Lines flight 737, an Airbus A320-212, experienced a traffic alert and collision avoidance system (TCAS) resolution advisory (RA) while enroute from Hartsfield–Jackson Atlanta International Airport (ATL), Atlanta, Georgia, to Ronald Reagan Washington National Airport (DCA), Washington, DC. According to the flight crew, the airplane was level at flight level (FL) 290 when the crew requested a lower altitude from air traffic control (ATC) in preparation for arrival into DCA. ATC indicated there was traffic below them, cleared the flight to descend to FL280 and stated that further descent would be available after traffic below them was cleared. The captain selected FL280 and initiated the descent with the autopilot engaged. The first officer stated that airplane was descending at about 1,000 feet/min. While descending through about FL284, the flight crew received a TCAS RA instructing the crew to level off. The captain disengaged the autopilot and leveled off at about FL285. The flight crew reported the TCAS RA to ATC and resumed the descent to FL280 after the RA cleared. At the time of the TCAS RA, the flight attendants (FA) were beginning to prepare the cabin and galleys for landing. The FA in the aft galley was thrown to the floor, injuring both knees. She was assisted to her seat by the other FAs and several doctors and nurse passengers provided care for the remainder of the flight. The lead FA notified the flight crew of the injured FA. The flight crew contacted Delta to have medical personnel meet the airplane at the gate. After landing, the injured FA was transported to a local hospital, where she was diagnosed with fractures to both kneecaps. Two other FAs reported minor injuries but were not transported to the hospital.
Probable cause
The abrupt maneuver required to comply with a traffic alert and collision avoidance system resolution advisory during descent.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DCA25LA306
- Event ID
- 20250828200898
- Case number
- DCA25LA306
- 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, coordinates, 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: e3ffa930626595178424a4ffdc485795718320bfcc45e7bc70022661153f153b; retrieved 2026-09-16T20:17:05.962Z.