DCA16CA226
2016-09-24 · Dulles, Virginia, United States · None · 1 aircraft · Status: Completed
Airport IAD
Aircraft involved
Probable cause & findings
incorrect installation of the frangible towing fuse that prevented the nose landing gear from extending.
Factual narrative
On September 24 2016, at about 1015 PM EDT, Commutair flight 4919, a De Havilland Dash 8-200, N366PH, performed a nose gear up landing on runway 1R after the nose gear would not fully extend during approach to Washington Dulles International Airport (KIAD), Dulles, Virginia. The passengers were evacuated via exit doors on the runway. There were no injuries to the 21 passengers and 3 crew members and the airplane sustained substantial damage. The flight was operating under the provisions of 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight from Albany International Airport (KALB), Albany, New York to KIAD. According to the operator, the airplane was scheduled for maintenance during an overnight period on the evening before the accident flight at the Albany Maintenance Hangar Facility at KALB. As part of the scheduled maintenance, a frangible towing fuse in the nose landing gear mechanism was removed and replaced. The aircraft was released from maintenance and signed off for revenue service on the morning of the accident flight. According to the flight crew, the flight was uneventful until the final approach phase when they were configuring the airplane for landing at KIAD. After selecting the gear down, both main landing gear indicated down and locked but the nose gear indicated that the gear doors remained open and that the gear was unsafe. The flight crew then retracted the main landing gear and climbed to 3000 feet. While at altitude, the flight crew attempted to lower the gear a second time but the same result was indicated. The flight crew then performed the manual gear extension, but the nose gear still failed to extend. The flight conducted a low pass of the airport and ground personnel confirmed that the main landing gear were down, but the nose gear was retracted with the doors open. The flight crew climbed back to 3,000 feet, declared an emergency and requested airport emergency vehicles standby. During the landing roll, the nose of the airplane contacted the runway surface and the captain shut down the engines after the airplane came to a stop and called for an evacuation. None of the passengers or crew were injured. Examination of the airplane found substantial damage to the airplane skin and forward pressure vessel as a result of the contact with the runway. Inspection of the nose gear system found that the frangible towing fuse, which was replaced before the flight, was incorrectly installed. On September 24 2016, at about 1015 PM EDT, Commutair flight 4919, a De Havilland Dash 8-200, N366PH, performed a nose gear up landing on runway 1R after the nose gear would not fully extend during approach to Washington Dulles International Airport (KIAD), Dulles, Virginia. The passengers were evacuated via exit doors on the runway. There were no injuries to the 21 passengers and 3 crew members and the airplane sustained substantial damage. The flight was operating under the provisions of 14 Code of Federal Regulations Part 121 as a regularly scheduled passenger flight from Albany International Airport (KALB), Albany, New York to KIAD. According to the operator, the airplane was scheduled for maintenance during an overnight period on the evening before the accident flight at the Albany Maintenance Hangar Facility at KALB. As part of the scheduled maintenance, a frangible towing fuse in the nose landing gear mechanism was removed and replaced. The aircraft was released from maintenance and signed off for revenue service on the morning of the accident flight. According to the flight crew, the flight was uneventful until the final approach phase when they were configuring the airplane for landing at KIAD. After selecting the gear down, both main landing gear indicated down and locked but the nose gear indicated that the gear doors remained open and that the gear was unsafe. The flight crew then retracted the main landing gear and climbed to 3000 feet. While at altitude, the flight crew attempted to lower the gear a second time but the same result was indicated. The flight crew then performed the manual gear extension, but the nose gear still failed to extend. The flight conducted a low pass of the airport and ground personnel confirmed that the main landing gear were down, but the nose gear was retracted with the doors open. The flight crew climbed back to 3,000 feet, declared an emergency and requested airport emergency vehicles standby. During the landing roll, the nose of the airplane contacted the runway surface and the captain shut down the engines after the airplane came to a stop and called for an evacuation. None of the passengers or crew were injured. Examination of the airplane found substantial damage to the airplane skin and forward pressure vessel as a result of the contact with the runway. Inspection of the nose gear system found that the frangible towing fuse, which was replaced before the flight, was incorrectly installed. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Task performance-Maintenance-Scheduled/routine maintenance-Maintenance personnel - C
- — Aircraft-Aircraft systems-Landing gear system-Nose/tail landing gear-Failure
- — Aircraft-Aircraft systems-Landing gear system-Gear extension and retract sys-Malfunction
Verbatim from NTSB's published report. Source file
NTSB_2016_DCA16CA226.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type or causal vocabulary (stall, maintenance). All research papers
- Embry-Riddle Scholarly Commons 2023 · Conference paper The Value of Strong Partnerships to Build a Successful Aviation Maintenance Career Pathway Program for Transitioning Military Service Members
The aerospace industry is competing with other industries for a qualified workforce, and many of those competing industries are investing heavily in creating workforce development pipelines.
- 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…
- NASA NTRS 2026 · Conference Paper Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Semantic Scholar 2026 · Article (Reliability Engineering & System Safety) Understanding human error in military aviation maintenance: The role of Performance shaping factors, cognitive workload and error orientation
- 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.
- Semantic Scholar 2024 · Article (Defence Science Journal) Modelling of Human Factors in Aviation Maintenance Using HFACS ME Human Factors Analysis and Classification System Maintenance Extension and Bayesian Network
Aircraft maintenance is a complex task involving a skilled human workforce, spare parts, and various other resources. Human factors are an inherent element of the human workforce.