Regulations & Safety
NTSB Releases Flight Data on China Eastern Flight 5735 Crash
NTSB FOIA release reveals manual engine shutdown and control inputs in China Eastern Airlines Flight 5735 crash; CAAC final report pending.

This article is based on original AirPro News reporting and analysis of newly released public FOIA documents from the National Transportation Safety Board (NTSB).
On April 29, 2026, the U.S. National Transportation Safety Board (NTSB) released critical technical data regarding the fatal March 2022 crash of China Eastern Airlines Flight 5735 (MU5735). The release, prompted by a Freedom of Information Act (FOIA) request filed by a Chinese citizen in January 2026, provides the first public, data-backed insight into the final moments of the Boeing 737-800 aircraft.
According to the newly public Flight Data Recorder (FDR) download report, originally compiled in July 2022, the aircraft experienced a deliberate manual shutdown of both engines at cruising altitude. This was immediately followed by severe manual flight control inputs that forced the plane into a fatal dive. This data release occurs against a backdrop of delayed official reports from the Civil Aviation Administration of China (CAAC), which is leading the Investigation under international protocols.
We have reviewed the released documents, which were published on the NTSB’s official FOIA reading room on May 1, 2026, and subsequently mirrored on Wikipedia and GitHub. The findings offer essential technical context to an aviation tragedy that claimed the lives of all 132 passengers and crew members on board, marking it as the deadliest aviation accident in China since 1994.
Technical Findings from the FDR Data
Sequence of Events at 29,000 Feet
The NTSB’s July 2022 “Combined Download Report” details the final 90 seconds of recorded flight parameters. The data reveals a sequence of deliberate actions rather than a mechanical failure. According to the NTSB FOIA release, the incident began at a cruising altitude of 29,100 feet.
“while cruising at 29,000 ft., the fuel switches on both engines moved from the run position to the cutoff position.”
, NTSB Combined Download Report, July 2022
The FDR data plots show that this action occurred simultaneously or within one second of each other. Moving these switches to the cutoff position is a highly specific, multi-step physical action. It requires a pilot to lift and pull the switches over a mechanical detent, making an accidental deployment highly improbable.
Power Loss and Flight Control Inputs
The immediate result of the fuel cutoff was a rapid drop in engine core speed (N2) and a total loss of thrust. Following this power loss, the NTSB data indicates that the autopilot was disengaged.
Approximately three seconds later, the FDR recorded that the control yoke was pushed forward violently. This manual input initiated a steep, nose-down pitch. The data also shows continuous left-roll inputs, resulting in an inverted barrel roll maneuver, while the rudder remained in a neutral position.
The FDR ceased recording at approximately 26,000 feet, about 23 seconds after the fuel switches were cut. The NTSB report notes that the FDR relies on engine-driven generators and lacks a backup battery. Consequently, it powered down when the engines spooled down, leaving the final plunge to the ground unrecorded by this specific device.
The Investigation and Official Stances
The Role of the CAAC and NTSB
Under International Civil Aviation Organization (ICAO) Annex 13 guidelines, the CAAC is the lead investigative authority for the MU5735 crash, which occurred on March 21, 2022, in Teng County, Guangxi. The NTSB serves as a technical advisor representing the state of the aircraft’s Manufacturers, Boeing.
The CAAC has yet to release a final investigation report. While ICAO guidelines expect a final report or an annual interim statement, the CAAC has deviated from this standard. In response to an open government information request on May 19, 2025, the CAAC explained its withholding of the report.
Releasing an annual interim report might “endanger national security and societal stability.”
, CAAC response to an open government information request, May 2025
Previously, in statements released in 2022 and 2024, the CAAC confirmed that no mechanical, structural, or systemic faults were found with the Boeing 737-800 aircraft.
Cockpit Voice Recorder Status
Unlike the FDR, the Cockpit Voice Recorder (CVR) is equipped with a backup battery and captured the entire event until impact. The NTSB FOIA response indicates that the CVR audio was successfully downloaded in excellent quality and handed over entirely to the CAAC. The NTSB did not retain any audio files, and the contents remain classified by Chinese authorities.
AirPro News analysis
The release of this FDR data highlights a significant transparency gap between the U.S. FOIA process and the CAAC’s ongoing withholding of the final report. U.S. federal law (49 U.S.C. § 1114(f)) mandates the release of certain technical data after specific criteria or timeframes are met, which ultimately forced the publication of these raw technical plots despite the CAAC’s reluctance to publish an interim update.
While the data strongly indicates deliberate manual inputs, specifically the fuel cutoff and the subsequent yoke push, we must avoid definitively diagnosing the motive. Without access to the CVR audio, which remains under the exclusive control of the CAAC, assigning psychological intent or confirming theories of hijacking or pilot suicide remains speculative. The empirical evidence confirms the mechanical steps of how the aircraft entered its fatal dive, but the underlying reason remains officially unanswered.
Frequently Asked Questions (FAQ)
What is a fuel control switch?
A fuel control switch manages the flow of fuel to the aircraft’s engines. Moving it to the “cutoff” position mid-flight stops fuel flow, shutting down the engine. It requires a specific, deliberate physical action to bypass a safety detent, preventing accidental activation.
Why did the Flight Data Recorder stop at 26,000 feet?
The FDR on the Boeing 737-800 relies on engine-driven electrical generators. When the engines were shut down and spooled down, the generators stopped providing power. Because the FDR lacks a backup battery, it powered off before the aircraft reached the ground.
Where can the public view these NTSB documents?
The documents are available in the NTSB’s official FOIA reading room under Document DCA22WA102. They have also been archived on Wikimedia Commons and translated on various GitHub repositories.
Sources:
Photo Credit: Xinhua
Regulations & Safety
Ubisoft Co-Founder Claude Guillemot Killed in France Plane Crash
Claude Guillemot, Ubisoft co-founder and EVP of Operations, died June 19 in a Cessna 421 crash near La Baule, France.

This is a developing story. Information may change as official details are released.
This article summarizes reporting by AP News by Angela Charlton, with additional corporate statements reported by Forbes.
Claude Guillemot, a co-founder of the global video game publisher Ubisoft Entertainment SA, and an unnamed flight instructor were killed on June 19, 2026, when their twin-engine Cessna 421 crashed during final approach to La Baule-Escoublac Airports in western France.
The 69-year-old executive served as Ubisoft’s Executive Vice President of Operations and Chairman of Guillemot Corporation SA. According to reporting by AP News, the aircraft was traveling from Rennes to La Baule for a weekend aviation gathering when it went down in a field near the airport and caught fire.
Flight and investigation details
The flight originated in Rennes on Friday evening. Local authorities confirmed two fatalities at the scene, identified as Guillemot and the flight instructor. Guillemot owned the Cessna 421 and was a licensed, experienced pilot. He was reportedly traveling to the Atlantic coast to participate in a private aviation event expected to draw over a hundred aircraft.
The Bureau d’Enquêtes et d’Analyses pour la Sécurité de l’Aviation Civile (BEA), alongside French judicial authorities, has initiated an investigation into the accident. The official cause of the crash has not been determined. Because both occupants were licensed pilots, investigators have not yet confirmed whether Guillemot or the instructor was at the controls at the time of the accident.
Ubisoft confirms executive death
Guillemot was one of five brothers who founded the video game publisher in 1986. The company has since grown into a major international developer, known for highly successful franchises including Assassin’s Creed. On June 20, 2026, Ubisoft released an official statement confirming the loss of its co-founder.
“Ubisoft was deeply saddened to learn of the death of Claude Guillemot, co-founder of the group and chairman of Guillemot Corp., in an accident. Our thoughts are with his family and loved ones during this difficult time. No further statements will be made at this time.”
AirPro News analysis
The loss of a founding executive and operational leader presents an immediate transition requirement for Ubisoft and Guillemot Corporation. While corporate succession plans have not been publicly detailed following the accident, the sudden departure of a key figure who has been with the company since its 1986 inception will require the board to stabilize operational oversight. We expect the BEA investigation to follow standard protocols for general aviation accidents, focusing on weather conditions, aircraft maintenance records, and pilot inputs during the critical final approach phase.
Sources: AP News
Photo Credit: AP News
Regulations & Safety
FAA and EASA Pledge Cooperation on Aviation Certification
FAA and EASA commit to harmonizing certification pathways and expanding safety data sharing for advanced aviation technologies.

The Federal Aviation Administration (FAA) and the European Union Aviation Safety Agency (EASA) formally committed to deepening regulatory cooperation and harmonizing certification pathways for advanced aviation technologies on June 18, 2026.
Announced during the 2026 FAA and EASA International Safety Conference in Chantilly, Virginia, the joint pledge outlines a framework to streamline oversight and advance data-driven Safety Management Systems (SMS) across the global aerospace sector. According to a press release issued by the FAA, the agreement prioritizes collaboration at all organizational levels under the existing United States-European Union Aviation Safety Agreement.
Harmonizing certification and data sharing
The bilateral agreement focuses on several core objectives designed to keep pace with rapid technological advancements. Regulators plan to strengthen information exchange regarding safety oversight and expand the sharing of operational data to support future rulemaking. A primary goal of the pledge is to streamline approval processes for advanced aviation technologies, ensuring that certification pathways remain consistent between the two regulatory bodies.
FAA Administrator Bryan Bedford highlighted the necessity of the agreement during the conference.
“This is one of the most innovative moments in aviation, not just for America but also for our international partners. Sharing information and fostering conversations about safety allow us to strengthen our international partnerships and ensure aviation systems evolve safely and efficiently.”
EASA Executive Director Florian Guillermet echoed this sentiment, noting that strong cooperation between regulators is essential to maintain high safety standards as the industry evolves. Guillermet stated that aligning approaches will allow both agencies to support innovation while preserving public confidence in aviation.
Industry collaboration and future milestones
The joint pledge served as the culmination of the three-day conference, which operated under the theme “Safety Together: Innovation, Integration and Trust.” The event gathered approximately 400 senior aviation professionals, including representatives from manufacturers, airlines, industry associations, and regulatory bodies.
During the event, National Business Aviation Association (NBAA) President and CEO Ed Bolen participated in a fireside chat with Guillermet and FAA Deputy Administrator Chris Rocheleau. The discussion emphasized the requirement for continuous government and industry collaboration to manage the integration of new technologies.
To ensure the pledge translates into actionable policy, executive leadership from both the FAA and EASA committed to meeting regularly. These meetings will focus on reviewing progress, identifying emerging priorities, and sharing implementation updates. The agencies also confirmed that the next FAA-EASA International Aviation Safety Conference is scheduled for June 22 through June 24, 2027, and will be hosted in Cologne, Germany.
AirPro News analysis
We view this renewed commitment between the FAA and EASA as a critical prerequisite for the successful rollout of Advanced Air Mobility (AAM) and electric vertical takeoff and landing (eVTOL) aircraft. Historically, divergent certification standards between the United States and Europe have forced original equipment manufacturers (OEMs) to navigate costly and time-consuming parallel approval processes. By explicitly targeting the harmonization of certification pathways for advanced technologies, the two largest Western aviation regulators are signaling an intent to prevent regulatory fragmentation. The emphasis on expanding Safety Management Systems (SMS) also indicates a shift toward predictive, data-driven oversight rather than reactive rulemaking.
Sources: Federal Aviation Administration
Photo Credit: EASA
Regulations & Safety
AvSafety Joins Starr Safety Partnership for SMS Compliance
Aviation Safety Solutions joins Starr Safety Partnership, offering SMS consulting to insureds as FAA expands mandates to Part 135 and charter operators.

Aviation Safety Solutions, LLC (AvSafety) has been selected to join the Starr Safety Partnership, integrating its Safety Management System (SMS) consulting and training services into the network available to Starr Aviation clients.
Announced in a press release on June 17, 2026, the partnership provides Starr Aviation insureds with access to AvSafety’s specialized resources, including Federal Aviation Administration (FAA) SMS workshops, manual development, and safety audits. The integration comes as the FAA actively expands SMS regulatory requirements across broader segments of the aviation industry.
Expanding safety resources for operators
Starr Aviation, a division of Starr Insurance Companies, launched the Starr Safety Partnership in October 2022 to offer discounted safety services to its insured pilots and aircraft owners. By adding AvSafety to this network, Starr expands its portfolio of compliance and risk management tools available to policyholders.
Founded in 2013 and based in Janesville, Wisconsin, AvSafety focuses on helping aviation organizations build and maintain compliant safety programs. Amanda Ferraro, Chief Executive Officer of Aviation Safety Solutions, stated in the release that joining the network presents an exciting opportunity for the organization.
“Our team is passionate about helping organizations build sustainable safety programs that move beyond compliance and create lasting operational value. We are honored to support Starr clients as they strengthen their safety culture, improve risk management processes, and prepare for the evolving regulatory environment.”
Regulatory drivers for SMS adoption
The demand for specialized safety consulting is increasing due to shifting federal regulations. The FAA is currently expanding SMS mandates beyond Part 121 commercial airlines to include Part 135 commuter and charter operators, Part 91.147 air tour operators, and certain Part 21 aircraft manufacturers.
This regulatory expansion requires many operators to formalize their safety protocols, driving the need for external auditing, manual development, and structured training programs like those provided by AvSafety.
AirPro News analysis
We view the inclusion of AvSafety in the Starr Safety Partnership as a direct market response to the FAA’s widening SMS mandate. As smaller operators and charter companies face the administrative burden of implementing formal safety management systems, insurance providers are increasingly positioning themselves as facilitators of compliance. By subsidizing or discounting access to established SMS consultants, aviation insurers can simultaneously reduce their own underwriting risk and provide tangible value to policyholders navigating new regulatory hurdles.
Sources: Aviation Safety Solutions, LLC
Photo Credit: Aviation Safety Solutions
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