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
ICAO Proposes Platform to Fix Cross-Border Flight Rule Enforcement
ICAO’s Legal Committee proposes new guidance and a communication platform after finding 75% of countries lack violation-sharing systems.
The International Civil Aviation Organization (ICAO) Legal Committee has proposed a new communication platform and comprehensive legal guidance to address widespread gaps in how countries enforce international flight rules.
Announced in an October 27, 2026, press release, the proposals target inconsistent enforcement and notification failures regarding aviation violations, particularly those occurring over the high seas or involving foreign-registered aircraft. The initiative aims to standardize accountability under Article 12 of the Convention on International Civil Aviation.
Addressing the data-sharing deficit
Recent reviews by ICAO highlighted significant vulnerabilities in global aviation safety accountability. According to the organization, enforcement of the “Rules of the Air” remains highly inconsistent, with national authorities frequently failing to coordinate on safety infractions.
A legal survey conducted by ICAO revealed that 75% of responding countries currently lack established systems to share information regarding violations committed by foreign aircraft. This data-sharing deficit often results in delayed or lost notifications. The problem is particularly acute for incidents occurring on flights over the high seas, where jurisdictional authority is frequently unclear.
Privacy concerns and legal liabilities have historically discouraged open communication among national aviation authorities. This environment hinders the proactive safety reporting culture that ICAO promotes, leaving regulators unaware of potential repeat offenses by operators crossing international borders.
Standardizing Article 12 enforcement
Article 12 of the Chicago Convention establishes the foundational “Rules of the Air.” Under this framework, every contracting country must enforce these regulations for any aircraft operating within its airspace, as well as for its own registered aircraft regardless of their location. Countries are required to align their national rules with ICAO standards to the greatest extent possible and must prosecute violations.
In practice, national approaches to enforcement vary drastically. Depending on where an incident takes place, pilots and operators might face criminal prosecution, financial penalties, or mandatory retraining. The ICAO Legal Committee, which has drafted 24 international air law treaties since its establishment in 1947, developed the new proposals to bridge these regulatory disparities.
Implementation and next steps
To resolve these inconsistencies, ICAO plans to introduce a first-of-its-kind comprehensive guidance document detailing how member states should implement Article 12.
Alongside the written guidance, the United Nations agency will launch a dedicated communication platform. This system will serve as a centralized point of contact, enabling countries to securely notify one another of potential violations and coordinate cross-border enforcement actions.
AirPro News analysis
The introduction of a centralized communication platform for violation reporting represents a significant shift in international aviation oversight. While ICAO cannot force sovereign nations to harmonize their penal codes, providing a secure channel for data sharing removes the technical and administrative barriers that currently allow operators to evade scrutiny when crossing borders. If widely adopted, this platform could effectively close the loophole where a pilot or airline accumulates a record of infractions in foreign airspace without their home regulator ever being notified.
Photo Credit: ICAO
Regulations & Safety
EASA Annual Safety Review 2026 European Aviation Safety
EASA’s Annual Safety Review 2026 shows European aviation safety remained stable in 2025, with one fatal CAT aeroplane accident recorded.
The European Union Aviation Safety Agency (EASA) published its Annual Safety Review 2026 on October 22, 2026, indicating that European aviation safety performance remained stable throughout the 2025 operational year. The comprehensive statistical analysis, formally announced on October 26, 2026, tracks safety performance across all aviation domains to guide practical risk reduction actions and regulatory updates.
Commercial Air Transport safety performance
The review of the 2025 operational year showed that fatal accidents and fatalities remained at or below the 10-year average across most aviation domains. In Commercial Air Transport (CAT) operations involving aeroplanes, EASA recorded one fatal accident. The event involved an air taxi flight that crashed after declaring an emergency, resulting in eight fatalities.
Beyond the single fatal accident, CAT aeroplane operations in 2025 experienced 16 non-fatal accidents and 51 serious incidents. The agency also recorded 17 serious injuries within this domain. EASA attributed these injuries to a variety of operational events, including turbulence, airstair disembarkation, wake vortex encounters, Traffic Collision Avoidance System (TCAS) maneuvers, emergency evacuations, and pushback operations.
In a press release accompanying the report, EASA noted the overall stability of the European aviation system.
“The overall picture shows that, in almost all domains, the number of fatal accidents and fatalities remained at or below the average for the previous 10 years. This suggests that safety performance remained broadly stable or has been improved in most areas,” the agency stated.
Rotorcraft operations and leading safety risks
The safety data for Commercial and Specialised Helicopters operations in 2025 included one fatal accident, which resulted in three fatalities. The rotorcraft sector also recorded four non-fatal accidents and 14 serious incidents during the same 12-month period.
The Annual Safety Review identified and ranked the leading safety risks for Commercial Air Transport based on the 2025 data. The top five risks were identified as fire, smoke and pressurisation events, followed by aircraft upset, airborne collision, collision on runway, and runway excursions.
While the broader statistical trends point to a stable safety environment, EASA emphasized that risk levels fluctuate depending on the specific aviation sector. “However, the results varied between different types of operation, underlining the need for continued vigilance and targeted safety action,” the agency noted.
EASA’s evolving safety framework
The Annual Safety Review serves as a critical data-driven input for the European Safety Risk Management (SRM) process. The findings from the 2026 report will feed directly into future updates of the European Plan for Aviation Safety (EPAS), which dictates the regulatory and safety priorities for EU member states.
For the 2026 edition, EASA introduced a new six-page Annual Safety Review Summary. This addition was designed to present headline figures and leading safety risks in a more accessible format for commercial air transport aeroplanes, rotorcraft, and general aviation.
The publication of the safety review aligns with a broader push by EASA to address emerging and persistent operational risks in European airspace. Throughout October 2026, the agency updated several safety guidelines, including revisions to the Easy Access Rules for Aircrew on October 16, 2026, and the CS-GEN-MMEL on October 15, 2026. EASA also recently hosted a joint workshop with EUROCONTROL to address Europe’s Global Navigation Satellite System (GNSS) interference Action Plan, targeting a growing operational safety concern for flight crews operating in and around European airspace.
Photo Credit: EASA
Regulations & Safety
HKIA and Air New Zealand Earn First IATA One ID Certification
Hong Kong International Airport and Air New Zealand are the first to achieve IATA One ID Certification for biometric travel systems.
Hong Kong International Airport (HKG) and Air New Zealand (NZ) have become the first aviation organizations globally to achieve One ID Certification from the International Air Transport Association (IATA) for their digital identity and biometric processing systems.
The certifications, officially presented on October 28, 2026, at the IATA World Passenger Symposium in Macao, provide independent validation that the biometric passenger processing technologies deployed by both entities meet global industry standards for contactless travel, data handling, and privacy governance. In a press release issued by the Airport Authority Hong Kong (AAHK), the airport operator confirmed it had achieved the full set of certification areas applicable to airports.
Validating biometric processing
IATA recently formalized the One ID Certification program to establish an independent assessment framework for digital identity processes in commercial aviation. The program evaluates an organization’s implementation of digital identity controls, governance frameworks, and system capabilities against established IATA requirements.
The certification covers four principal areas: digitalization of admissibility, contactless travel, biometric handling, and privacy, consent, and governance. Hong Kong International Airport achieved the full set of certification areas applicable to airport operators, which include contactless travel, biometric handling, and privacy, consent, and governance. Air New Zealand was simultaneously certified, marking the first time an airline has achieved the standard.
“We are honoured that HKIA is the world’s first airport to achieve IATA One ID Certification,” Vivian Cheung, Chief Executive Officer of AAHK, stated in the release. She noted that the certification affirms the airport’s commitment to enhancing the passenger experience through innovation and demonstrates that its digital identity processes meet global standards.
The mechanics of Flight Token
The foundation of the airport’s certification is its proprietary self-service biometric identification system, known as Flight Token. The system allows passengers to navigate various departure checkpoints using facial recognition technology instead of repeatedly presenting physical travel documents and boarding passes.
Introduced in 2021, the biometric verification spans the entire departure process. Passengers can utilize the technology at check-in, bag drop, security screening, and final boarding. The AAHK, a statutory body wholly owned by the Hong Kong Special Administrative Region Government that manages and operates the airport, reports that the system has processed over 93 million passengers to date.
The infrastructure required to support this volume of biometric processing has been deployed extensively across the facility. Currently, 80% of departing passengers at the airport are eligible to utilize the Flight Token system across all departure checkpoints.
Industry shift toward paperless travel
The dual certification of a major international hub and a flag carrier represents a measurable step toward standardized paperless travel in international aviation. The broader IATA One ID initiative aims to reduce repeated document checks by allowing travelers to verify their identity before reaching the airport and use facial recognition at participating checkpoints.
Consumer acceptance of such technologies appears to be growing alongside implementation. According to IATA’s 2026 Global Passenger Survey, 78% of respondents indicated a willingness to share biometric data to avoid presenting physical travel documents at airport checkpoints.
Nick Careen, Senior Vice President for Operations, Safety and Security at IATA, emphasized the importance of standardized frameworks and stakeholder confidence, as reported by TRAICY Global.
“Digital identity can significantly simplify travel, but only when all stakeholders involved in the journey can trust how others verify identity, handle biometric data, and protect privacy,” Careen said.
AirPro News analysis
We view the introduction and initial awarding of the IATA One ID Certification as a critical mechanism for overcoming the primary barrier to global biometric travel: interoperability built on trust. While individual airports and airlines have deployed proprietary biometric systems for years, these isolated ecosystems often require passengers to re-enroll or present physical documents when transferring between different carriers or jurisdictions.
By establishing an independent baseline for privacy governance and data handling, IATA is creating the necessary framework for cross-border digital identity acceptance. The simultaneous certification of an airport and an airline highlights the dual-stakeholder cooperation required to make seamless, paperless international transit a reality. Wider global adoption of the One ID standard will now depend on ongoing cooperation between airlines, airports, and national governments regarding the legal acceptance of digital travel credentials.
Photo Credit: Hong Kong International Airport
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