NTSB CAROL · Event
Event DCA14CA031
Aircraft involved
Probable cause & findings
an inadvertent encounter with several birds during approach that resulted in substantial damage to the airplane.
Factual narrative
On November 24, 2013, at approximately 2040 EST, a De Havilland DHC-8-102, N808EX, operated by Piedmont Airlines as flight 4314, encountered a flock of a birds during the descent into Philadelphia International Airport (KPHL), Philadelphia, Pennsylvania. The airplane was located about 16 miles north of KPHL, and at about 4000 feet mean sea level (msl), when multiple birds impacted the fuselage and wing of the airplane . The flight crew notified air traffic control, and did not declare an emergency. None of the 40 passengers and crew onboard were injured and the airplane was substantially damaged. The flight was operating under 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight between Greater Binghamton Airport (KBGM), Binghamton, New York, and KPHL. The captain was the pilot flying, and stated that flight conditions were night VMC with no moon. The flight crew stated they were at 4,000 feet msl, at about 190 knots airspeed, and on the downwind leg for runway 26 when the bird strike occurred. The flight crew heard multiple thuds and saw some of the birds through the windshield. After the impacts, the flight crew checked instruments, disconnected autopilot, checked for changes in flight characteristics and did not note any changes. The first officer notified ATC of the bird strike and did not declare an emergency. The flight landed uneventfully at KPHL. Post flight maintenance inspection revealed substantial damage to the left front wing spar, left wing skin, and vertical stabilizer deice boot. On November 24, 2013, at approximately 2040 EST, a De Havilland DHC-8-102, N808EX, operated by Piedmont Airlines as flight 4314, encountered a flock of a birds during the descent into Philadelphia International Airport (KPHL), Philadelphia, Pennsylvania. The airplane was located about 16 miles north of KPHL, and at about 4000 feet mean sea level (msl), when multiple birds impacted the fuselage and wing of the airplane . The flight crew notified air traffic control, and did not declare an emergency. None of the 40 passengers and crew onboard were injured and the airplane was substantially damaged. The flight was operating under 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight between Greater Binghamton Airport (KBGM), Binghamton, New York, and KPHL. The captain was the pilot flying, and stated that flight conditions were night VMC with no moon. The flight crew stated they were at 4,000 feet msl, at about 190 knots airspeed, and on the downwind leg for runway 26 when the bird strike occurred. The flight crew heard multiple thuds and saw some of the birds through the windshield. After the impacts, the flight crew checked instruments, disconnected autopilot, checked for changes in flight characteristics and did not note any changes. The first officer notified ATC of the bird strike and did not declare an emergency. The flight landed uneventfully at KPHL. Post flight maintenance inspection revealed substantial damage to the left front wing spar, left wing skin, and vertical stabilizer deice boot. 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
- — Aircraft-Aircraft structures-Wing structure-Leading edge devices-Damaged/degraded
- — Aircraft-Aircraft structures-Wing structure-Spar (on wing)-Damaged/degraded
Verbatim from NTSB's published report. Source file
NTSB_2013_DCA14CA031.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 or causal vocabulary (maintenance, autopilot). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- arXiv 2025 · arXiv preprint
ROSflight 2.0: Lean ROS 2-Based Autopilot for Unmanned Aerial Vehicles
ROSflight is a lean, open-source autopilot ecosystem for unmanned aerial vehicles (UAVs). Designed by researchers for researchers, it is built to lower the barrier to entry to UAV research and acceler…
- arXiv 2025 · arXiv preprint
ROSplane 2.0: A Fixed-Wing Autopilot for Research
Unmanned aerial vehicle (UAV) research requires the integration of cutting-edge technology into existing autopilot frameworks.
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- NASA NTRS 2024 · Technical Memorandum (TM)
Testing of Advanced Capabilities to Enable In-time Safety Management and Assurance for Future Flight Operations
In order to refine an initial Concept of Operations, explore Concepts of Use, and expose/validate requirements for future In-Time Aviation Safety Management Systems (IASMS), testing architectures were…
- arXiv 2024 · arXiv preprint
A Data-Driven Autopilot for Fixed-Wing Aircraft Based on Model Predictive Control
Autopilots for fixed-wing aircraft are typically designed based on linearized aerodynamic models consisting of stability and control derivatives obtained from wind-tunnel testing.
Browse the full corpus — academia portal ↗