Regulations & Safety
WestJet Boeing 737 Landing Gear Collapse Investigation in St Maarten
TSB investigates WestJet Boeing 737 landing gear collapse in St Maarten linked to a fractured aft trunnion pin from maintenance issues.

Anatomy of a Landing Gear Failure: TSB Investigates WestJet Incident in St. Maarten
On September 7, 2025, a routine landing for a WestJet Boeing 737-800 at the scenic Princess Juliana International Airport in St. Maarten took an unexpected turn. The aircraft, arriving from Toronto with 157 passengers and 6 crew members, experienced a significant mechanical failure during its landing on Runway 10. The right main landing gear collapsed, causing the aircraft’s right engine to strike the runway surface. The event led to substantial damage to the aircraft and a prompt, controlled evacuation of everyone on board.
In the world of aviation safety, what happens after an incident is just as critical as the event itself. Under international aviation protocols, the St. Maarten Civil Aviation Authority delegated the complex task of investigation to the Transportation Safety Board of Canada (TSB). The TSB, working in close collaboration with American counterparts like the National Transportation Safety Board (NTSB) and the Federal Aviation Administration (FAA), as well as with Boeing and WestJet, immediately began to piece together the sequence of events. One of the first, and most crucial, findings from the flight data recorder was clear: this was not a hard landing, immediately shifting the focus from operational factors to the mechanical integrity of the aircraft.
This incident does not exist in a vacuum. As investigators delve deeper, the focus has narrowed to a specific, critical component known as the aft trunnion pin. This piece of hardware has been implicated in previous landing gear failures on other Boeing 737 aircraft. The TSB’s investigation, therefore, carries implications that extend beyond a single flight, touching upon maintenance procedures and the lifecycle management of one of the world’s most common commercial aircraft.
The Incident and Initial Findings
The moments following the gear collapse were a testament to crew training and procedural discipline. With the aircraft disabled on the runway, the crew initiated a planned evacuation. Passengers and crew exited the aircraft using the emergency slides on the left side, away from the damaged right side. The evacuation was swift and orderly, resulting in only one reported minor injury sustained during the process. No injuries were reported as a direct result of the landing gear failure itself, a positive outcome in a challenging situation.
The Fractured Pin: A Critical Clue
Once the site was secured, TSB investigators began a meticulous examination of the aircraft. Their attention was quickly drawn to the failed right main landing gear, where they discovered that the aft trunnion pin had fractured. This pin is a crucial structural component that secures the landing gear assembly to the wing, designed to withstand immense forces during takeoff and landing. Its failure is a significant structural event.
The two fractured portions of the pin were carefully recovered from the site and transported to the TSB’s Engineering Laboratory in Ottawa. There, they will undergo detailed metallurgical and forensic analysis to determine the precise cause of the fracture. This examination will look for evidence of fatigue, stress corrosion, or manufacturing defects, providing a scientific basis for understanding why the component failed when it did.
The TSB also noted a key piece of the aircraft’s history: the right main landing gear assembly had undergone a complete overhaul in 2016. While this is a standard procedure for aircraft components, the date and details of this maintenance work will undoubtedly form a key part of the ongoing investigation as the team builds a complete picture of the component’s service life.
The initial review of the flight data recorder data indicates that this was not a hard landing event. This finding directs the investigation away from operational factors and squarely towards the aircraft’s mechanical integrity.
A Pattern of Failures: The Aft Trunnion Pin in Focus
Standard investigative practice involves looking for patterns, and the TSB is currently reviewing previous occurrences involving aft trunnion pin fractures on Boeing 737 aircraft. This line of inquiry is particularly relevant, as the NTSB has investigated at least two similar incidents in recent years, both of which point to a potential systemic issue related to maintenance procedures rather than a design flaw.
Historical Precedents and Maintenance Links
In August 2023, an Alaska Airlines Boeing 737-800 experienced a landing gear collapse. The subsequent NTSB investigation found that the left main landing gear’s aft trunnion pin had fractured due to a fatigue crack. The probable cause was determined to be “excessive grinding” during a maintenance overhaul, a procedure that inadvertently introduced heat damage and created the conditions for the crack to develop and propagate over time.
This was not an isolated case. A similar incident in December 2019 involving a United Airlines Boeing 737-800 was also traced back to a fractured aft trunnion pin. Once again, the NTSB investigation concluded that a fatigue crack had formed due to “excessive grinding” during an overhaul. These repeated findings highlight the critical importance of adhering to precise, validated procedures during the complex process of refurbishing major aircraft components.
These historical cases provide a crucial context for the WestJet investigation. They suggest that the focus will likely be on the maintenance, repair, and overhaul (MRO) history of the component. Landing gear assemblies are periodically removed from aircraft and completely disassembled, inspected, repaired, and reassembled by specialized facilities. The NTSB’s findings in the Alaska and United cases show that even minor deviations from approved procedures in this highly technical process can introduce latent defects that may not become apparent for years, ultimately leading to in-flight failures.
Conclusion: Awaiting the Final Report
The investigation into the WestJet landing in St. Maarten is a clear example of the methodical, evidence-based approach that defines modern aviation safety. The key facts established so far are that the incident was not caused by a hard landing, but by the fracture of the right main gear’s aft trunnion pin. This specific component has a documented history of failure in other Boeing 737-800s, with previous investigations pointing to improper maintenance during overhauls as the root cause.
The TSB’s final report, which will be released after the completion of the laboratory analysis and a full review of all evidence, will provide the definitive cause of this specific incident. Its findings will be closely watched by airlines, MRO facilities, and regulators worldwide. Depending on the outcome, it could lead to revised maintenance protocols or airworthiness directives to prevent similar occurrences, reinforcing the continuous cycle of learning and improvement that makes air travel one of the safest forms of transportation.
FAQ
Question: What happened to the WestJet flight in St. Maarten?
Answer: On September 7, 2025, the aircraft’s right main landing gear collapsed upon landing at Princess Juliana International Airport. The investigation has focused on a fractured component in the gear assembly known as the aft trunnion pin.
Question: Was the incident caused by a hard landing?
Answer: No. The Transportation Safety Board of Canada (TSB) analyzed the flight data recorder and stated that the event was not a hard landing.
Question: Have similar incidents happened before?
Answer: Yes, the U.S. National Transportation Safety Board (NTSB) has investigated similar landing gear collapses on other Boeing 737-800 aircraft. In those cases, the cause was traced to fatigue cracks in the aft trunnion pin, which were attributed to improper maintenance procedures during overhaul.
Question: Were there any serious injuries?
Answer: No injuries were reported from the gear collapse itself. A planned evacuation was conducted, during which one minor injury was reported.
Sources
Photo Credit: TSB
Regulations & Safety
Bridger Aerospace Integrates TracPlus Data into IGNIS Platform
Bridger Aerospace partners with TracPlus to stream real-time wildfire aircraft data into its IGNIS incident management platform.

Bridger Aerospace Group Holdings, Inc. has partnered with aviation data provider TracPlus to integrate real-time aircraft tracking and drop event data directly into Bridger’s IGNIS software platform. Announced on July 20, 2026, the collaboration aims to provide wildland firefighters and incident management teams with a unified operational picture of aerial suppression efforts.
In a press release issued from its Belgrade, Montana headquarters, Bridger Aerospace stated the integration is designed to break down information silos between disparate systems. The move directly responds to recent federal directives, specifically the June 2025 Executive Order 14308, which mandated the modernization of wildfire firefighting technology and improved data sharing across agencies.
Integrating aviation intelligence for ground crews
TracPlus currently manages approximately 2,500 wildfire suppression Commercial-Aircraft and processes 800,000 flight hours annually for over 700 customers in more than 40 countries. Under the new partnership, this extensive aviation intelligence, including real-time aircraft positioning and specific drop event data, will stream directly into the IGNIS platform.
The integration allows ground crews, aviation teams, and incident managers to view exact aircraft operating locations and suppression activity impacts within the broader incident environment. By connecting these specialized platforms, the companies intend to shift aerial firefighting response from a reactive model to a proactive one.
“Trying to do everything yourself isn’t the best way in modern wildfire response,” said Todd O’Hara, CEO of TracPlus. “Our industry moves forward when specialists each perform what they do best and connect their work. By delivering our expertise in bringing aviation data together from every source and streaming it directly into the IGNIS platform, we are empowering the people on the frontline with a more complete operational picture to do their jobs better and help keep their communities safe.”
Aligning with federal modernization directives
The Partnerships aligns with the federal government’s ongoing push for connected, interoperable wildfire technology. In 2025, the White House Office of Science and Technology Policy called for a national roadmap to modernize firefighting technology and improve data sharing between systems under Executive Order 14308.
Bridger Aerospace CEO Sam Davis noted that the combined solution will enhance situational awareness for both the company’s own aerial firefighting operations and incident management teams nationwide.
“Technology is the new frontier in our mission to protect lives, property, and the environment and we just got stronger with TracPlus as a strategic partner,” Davis said.
The announcement follows Bridger Aerospace’s recent expansion in federal contracting, including a Department of the Interior task order secured on July 16, 2026, for the deployment of its multi-mission wildfire aircraft.
AirPro News analysis
We view the Bridger-TracPlus integration as a direct commercial response to the interoperability mandates outlined in Executive Order 14308. Historically, aerial firefighting has suffered from fragmented data, with ground crews, dispatchers, and pilots relying on separate, non-communicating systems. By embedding TracPlus’s massive data feed into the IGNIS platform, Bridger Aerospace is positioning its Software not just as an internal operational tool, but as a comprehensive incident management solution. This strategic alignment with federal modernization goals likely strengthens Bridger’s competitive posture for future government Contracts as agencies prioritize unified operating pictures.
Sources: Bridger Aerospace
Photo Credit: TracPlus
Regulations & Safety
AIAA Calls for Faster FAA Certification Path for AAM Aircraft
AIAA urges the FAA to adopt predictable AAM certification timelines as bipartisan legislation targets the 5-9 year type certificate process.

This article summarizes reporting by Aerospace America by Ryan Cooperman, J.D.
The American Institute of Aeronautics and Astronautics (AIAA) is calling for the Federal Aviation Administration (FAA) to establish a more predictable certification pathway for Advanced Air Mobility (AAM) aircraft, warning that regulatory uncertainty threatens United States aerospace leadership.
In a July 2, 2026, policy article published in Aerospace America, the AIAA outlined the critical balance between maintaining rigorous safety standards and fostering innovation. The publication notes that while traditional amended type certifications typically require three to five years, certifying entirely new aircraft types like AAM platforms currently takes five to nine years under existing FAA processes.
Legislative push for regulatory predictability
To address these extended timelines, bipartisan lawmakers introduced the Aviation Innovation and Global Competitiveness Act on February 13, 2026. The legislation seeks to mandate standard expected timelines for the FAA type certification process regarding AAM aircraft. It also aims to clarify the specific conditions under which the agency must require an issue paper, a regulatory step that often introduces variability into the certification timeline.
The AIAA has formally endorsed the legislation, aligning the bill with the institute’s designation of AAM and autonomous flight integration as a 2026 Aviation Priority Issue. According to Aerospace America, securing a predictable regulatory framework is vital not only for engineering progress but also for maintaining the capital investment required to bring hybrid and electric vertical takeoff and landing (eVTOL) aircraft to market.
Overcoming historical bottlenecks and workforce gaps
The push for modernization follows years of documented regulatory friction. On June 21, 2023, the Department of Transportation Office of Inspector General (DOT OIG) released a report indicating that communication and management issues had hindered the FAA’s ability to certify AAM aircraft efficiently. Congress subsequently passed the FAA Reauthorization Act of 2024 on May 16, 2024, which included specific provisions targeting AAM integration.
Beyond statutory changes, Aerospace America highlights that certification modernization is fundamentally a workforce challenge. As aircraft designs incorporate more autonomous flight systems, the FAA must attract and retain technical specialists, software engineers, and flight-test experts capable of evaluating highly complex architectures.
“The challenge is ensuring that America’s certification system can efficiently evaluate increasingly novel aircraft and enabling technologies while preserving the world’s safest aviation system,” Cooperman wrote.
AirPro News analysis
We view the AIAA’s public policy push as a reflection of broader aerospace industry frustration with the ad-hoc nature of early eVTOL certification bases. While the FAA has made strides since the 2023 DOT OIG report, the five to nine year timeline for new type certificates remains a significant barrier for manufacturers relying on continuous venture capital funding. If the Aviation Innovation and Global Competitiveness Act passes, the mandated timelines could provide financial markets with the predictability they require. However, the FAA will still face the practical hurdle of staffing enough specialized engineers to meet those statutory deadlines without compromising its safety mandate.
Sources: Aerospace America
Photo Credit: Aerospace America
Regulations & Safety
FAA Awards L3Harris Contract to Modernize US Airspace Through 2045
The FAA awarded L3Harris a contract to upgrade 700+ ground stations and operate the US aircraft tracking network through 2045.

On July 1, 2026, the Federal Aviation Administration (FAA) awarded L3Harris Technologies a contract to upgrade and operate the United States aircraft tracking network through 2045. The modernization effort will overhaul ground infrastructure to support the integration of advanced air mobility (AAM) vehicles and drones into the National Airspace System.
In a press release issued on July 1, 2026, L3Harris announced the agreement, which mandates the upgrade of at least 700 ground stations across the country. The enhanced network will provide real-time, satellite-based flight positioning data while bolstering cybersecurity measures to protect air traffic management systems. The exact monetary value of the contract was not disclosed.
Expanding surveillance for next-generation airspace
The contract extends the role of L3Harris in managing the FAA surveillance infrastructure for nearly two more decades. The upgraded ground stations are designed to handle increased network capacity, a requirement as the airspace becomes more crowded with non-traditional aircraft.
Kathy Crandall, President of Mission Networks, Space & Mission Systems at L3Harris, emphasized the operational impact of the upgrades.
“L3Harris is propelling the FAA’s modernization vision forward by delivering an advanced surveillance infrastructure that will define the future of our airspace system and ensure increased safety for all air travelers.”
Crandall added that expanding network capacity ensures the United States maintains its position in global air traffic management.
Alignment with broader FAA modernization initiatives
This surveillance contract aligns with ongoing FAA efforts to replace aging infrastructure across the National Airspace System. The agency has been executing its Facility Replacement and Radar Modernization (FRRM) strategy, which targets the replacement of over 370 air traffic control facilities and 618 radars that average 36 years of age.
L3Harris is already involved in parallel infrastructure projects for the FAA. The company is currently executing the FAA Telecommunications Infrastructure (FTI) upgrade. That project replaces legacy copper wire connections with high-speed fiber optic networks across FAA facilities, providing the bandwidth necessary to support emerging aviation technologies like electric aviation vertical takeoff and landing (eVTOL) aircraft and uncrewed aerial systems.
AirPro News analysis
The extension of the L3Harris mandate through 2045 highlights the reliance of the FAA on established defense and aerospace contractors to execute its long-term modernization goals. As the National Airspace System transitions to accommodate AAM and widespread drone operations, the data bandwidth and latency requirements for air traffic control will increase exponentially. We view the concurrent execution of the surveillance network upgrade and the FTI fiber optic rollout as a necessary synchronization. Without high-speed ground data transmission, the benefits of satellite-based, real-time tracking for low-altitude and autonomous aircraft would be severely bottlenecked.
Sources: L3Harris Technologies
Photo Credit: L3Harris Technologies
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