NTSB CAROL · Event
Event DCA19CA130
Registry · N249WN
FAA Aircraft Registry record.
Make / Model
BOEING 737-7H4
Year of manufacture
2006 · 13 years old at event
TCDS
A16WE · THE BOEING CO
Engine
CFM INTL CFM56-7B24
Seats / Engines
143 seats · 2 engines
Last airworthiness date
20060728
ADS-B equipped
Yes — Mode-S A2536F
Registrant of record
SOUTHWEST AIRLINES CO
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
a collision with a bird.
Factual narrative
On March 27, 2019 at 7:25pm central daylight time (EDT), a Boeing 737-700, N249WN, operated by Southwest Airlines as flight 975 struck a bird with the left horizontal stabilizer while descending through 2,500 feet on approach to the Berry-Nashville International Airport (KBNA), Nashville, Tennessee. The airplane landed at KBNA with no further incident. There were no injuries and the airplane was substantial damaged. The regularly scheduled passenger flight was operating under the provisions of 14 CFR Part 121 from the Pittsburgh International Airport (KPIT), Pittsburgh, Pennsylvania, to KBNA. Damage to the airplane included a 12 inch crack in the forward spar, requiring replacement of the horizontal stabilizer. Bird residue was sent to the Smithsonian Museum of Natural History laboratory, and identified as a Great Blue Heron. On March 27, 2019 at 7:25pm central daylight time (EDT), a Boeing 737-700, N249WN, operated by Southwest Airlines as flight 975 struck a bird with the left horizontal stabilizer while descending through 2,500 feet on approach to the Berry-Nashville International Airport (KBNA), Nashville, Tennessee. The airplane landed at KBNA with no further incident. There were no injuries and the airplane was substantial damaged. The regularly scheduled passenger flight was operating under the provisions of 14 CFR Part 121 from the Pittsburgh International Airport (KPIT), Pittsburgh, Pennsylvania, to KBNA. Damage to the airplane included a 12 inch crack in the forward spar, requiring replacement of the horizontal stabilizer. Bird residue was sent to the Smithsonian Museum of Natural History laboratory, and identified as a Great Blue Heron. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Environmental issues-Physical environment-Object/animal/substance-Animal(s)/bird(s)-Effect on equipment - C
Verbatim from NTSB's published report. Source file
NTSB_2019_DCA19CA130.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2019 · Technical Memorandum (TM)
A preliminary study of a wake vortex encounter hazard boundary for a B737-100 airplane
A preliminary batch simulation study was conducted to define the wake decay required for a Boeing 737-100 airplane to safely encounter a Boeing 727 wake and land.
- NASA NTRS 2018 · Other
A Numerical Simulation Study to Develop an Acceptable Wake Encounter Boundary for a B737-100 Airplane
The National Aeronautics and Space Administration (NASA) is conducting research with the goal of enabling safe improvements in the capacity of the nation's air transportation system.
- NASA NTRS 2025 · Conference Paper
A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- arXiv 2023 · arXiv preprint
Radar detection of wake vortex behind the aircraft: the detection range problem
In this study, we showcased the detection of the wake vortex produced by a medium aircraft at distances exceeding 10 km using an X-band pulse-Doppler radar.
- Embry-Riddle Scholarly Commons 2023 · Conference paper
Airline Pilot Risk Profiling by Using Unstable Approach Management Case
Risk and human decision-making cannot be separated from each other. Many of theories and studies have tried to analyze pilots’ decision-making processes, risk factors, and preference behavior in the a…
- Embry-Riddle Scholarly Commons 2023 · Journal article (IJAAA)
Historical Research and the case for a Fifth Component of SMS
Abstract Three tragic events from aviation history were examined using a Historical Research and Case Study Method. The events explored were the disasters of the Airship R101 (1930), the Space Shuttle…
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