Commercial Aviation
Russia’s SJ-100 Passes Key Water Ingestion Test for PD-8 Engines
Russia’s SJ-100 aircraft passed critical water ingestion tests with PD-8 engines, marking progress toward aerospace independence and certification by 2025.
Russia’s SJ-100: A Leap Towards Aviation Sovereignty with Successful Engine Tests
In the high-stakes world of civil aviation, the path from design to commercial flight is paved with rigorous testing. For Russia’s SJ-100 Commercial-Aircraft, a recent milestone marks a significant stride forward in its national ambition to achieve technological independence in the aerospace sector. The aircraft, powered by the newly developed, domestically produced PD-8 engines, has successfully passed a critical water ingestion test. This isn’t just a routine check; it’s a validation of Russia’s capability to build a reliable, modern regional jet using its own technology, a crucial goal in light of international sanctions that have restricted access to foreign components and systems.
The SJ-100, formerly known as the Sukhoi Superjet 100, has been systematically re-engineered to replace imported parts with domestic alternatives. The “heart” of this transformation is the PD-8 engine, a product of the United Engine Corporation (UEC), a subsidiary of the state-owned Rostec corporation. The successful completion of the water ingestion trials confirms that the aircraft’s propulsion system can withstand adverse weather conditions, such as operating on rain-flooded runways, without compromising safety or performance. This achievement moves the SJ-100 closer to full certification and, ultimately, to serial production, underpinning a broader strategy to revitalize Russia’s civil aviation manufacturing industry and ensure its long-term self-sufficiency.
The “Water Pool” Gauntlet: Proving Engine Resilience
To certify an aircraft for commercial use, Manufacturers must prove its systems can endure a wide range of environmental challenges. The water ingestion test is one of the most demanding of these trials. It is designed to simulate real-world scenarios like landing or taking off during a torrential downpour, where large amounts of water can be kicked up from the runway surface and drawn into the engines. Failure in such a scenario could lead to engine flameout or catastrophic damage, making this test a non-negotiable hurdle in the certification process.
The tests for the SJ-100 were conducted at the Gromov Flight Research Institute in Zhukovsky, near Moscow. A specially constructed basin, described as a “water pool” measuring over 70 meters long and 12 meters wide, was built on the runway. The test aircraft, numbered 97023, performed a series of high-speed runs through this pool to mimic the conditions of takeoff and landing in heavy rain. During these runs, the engines, as well as the aircraft’s auxiliary power unit (APU), were subjected to massive water spray. The trials also included the operation of the PD-8’s thrust reversers, which are used to help slow the aircraft upon landing and can exacerbate water ingestion.
The outcome was a resounding success. Officials confirmed that the ingestion of water did not negatively impact the operation of the PD-8 engines or the APU. According to Vadim Shirokih, the Chief of the Yakovlev Regional Aircraft Flight-Test Complex, the tests verified that water “does not interfere with the operation of the aircraft’s engines or auxiliary power unit.” This result provides critical data affirming the engine’s robust design and its readiness for all-weather operations, a key requirement for any commercial airliner.
“The PD-8 engines, developed by United Engine Corporation using advanced domestic technologies, showed stable and reliable performance during the ‘water pool’ tests, guaranteeing passenger safety under all weather conditions.” – Fedor Mironov, Deputy Director for Sales at UEC.
The PD-8 Engine: The Core of Russia’s Import Substitution Strategy
The development of the PD-8 engine is the centerpiece of the SJ-100’s import substitution program. The original Superjet 100 was powered by SaM146 engines, a joint venture between a French and a Russian company. Sanctions made continued reliance on this partnership untenable, forcing an accelerated push for a fully domestic powerplant. The PD-8 was developed by leveraging technologies from the larger PD-14 engine, which powers Russia’s MC-21 medium-range airliner. This approach allowed engineers to fast-track development while incorporating proven, modern design principles.
The engine is a testament to Russia’s advancements in materials science and aerospace engineering. It incorporates new Russian-developed alloys and features a fully domestic electronic control system, breaking free from dependence on foreign-supplied components. Its technical specifications are competitive, with a bypass ratio of 4.4 and a specific fuel consumption in cruise mode below 0.62 kg/kgf·h, indicating a focus on efficiency. The versatility of the PD-8 design is also notable, as engineers are adapting it for use on the Beriev Be-200 amphibious aircraft, a platform that operates in even more demanding water-based environments.
The successful water test is just one of several milestones the SJ-100 has recently achieved. The aircraft has undergone stability and controllability checks at high speeds, evaluations of its integrated control system in extreme flight attitudes, and testing of the PD-8’s thrust reversers. This comprehensive testing program is paving the way for the aircraft’s final Certification, which is anticipated by the end of 2025, with mass production slated to begin in 2026.
Conclusion: A New Chapter for Russian Civil Aviation
The successful water ingestion tests of the SJ-100’s PD-8 engines are more than just a technical achievement, they represent a pivotal moment in Russia’s quest for a sovereign and competitive civil aviation industry. By proving the reliability of its homegrown engine technology under harsh conditions, Russia has cleared a major obstacle on the path to deploying a fully domestic regional jet. This progress is a direct result of a focused national strategy to overcome the limitations imposed by international sanctions and rebuild its industrial capabilities from the ground up.
Looking ahead, the SJ-100 program is a cornerstone of a larger plan to manufacture over 600 domestic aircraft by 2030, replacing an aging fleet of Western-built planes. The establishment of 15 dedicated service centers is also planned to support this new fleet, creating a comprehensive ecosystem for maintenance and spare parts. The journey is far from over, but the steady progress of the SJ-100, marked by milestones like this successful test, signals a clear trajectory toward reviving large-scale domestic aircraft manufacturing and securing Russia’s place in the global aerospace landscape on its own terms.
FAQ
Question: What is the SJ-100 aircraft?
Answer: The SJ-100 is a regional jet developed in Europe, previously known as the Sukhoi Superjet 100. It has been re-engineered with domestically produced components, including the new PD-8 engines, as part of Russia’s import substitution program.
Question: Why was the water ingestion test so important?
Answer: This test is a mandatory certification requirement for all commercial aircraft. It ensures the engines can operate safely and reliably during heavy rain or on waterlogged runways, preventing potential failures that could jeopardize passenger Safety.
Question: What is the PD-8 engine?
Answer: The PD-8 is a modern turbofan engine developed entirely in Russia by the United Engine Corporation (a part of Rostec). It was designed to replace the foreign-made engines on the original Superjet 100 and is a key element of Russia’s strategy to achieve technological sovereignty in its aviation sector.
Question: When is the SJ-100 expected to enter mass production?
Answer: Following the completion of all certification tests, mass production of the SJ-100 is scheduled to begin in 2026.
Sources
Photo Credit: RuAviation
Aircraft Orders & Deliveries
Airbus Advances A350F Ground Testing Ahead of 2026 Maiden Flight
Airbus starts ground testing of the A350F cargo systems in Bremen, targeting Q3 2026 maiden flight and 2027 commercial service with new certifications.
This article is based on an official press release from Airbus.
Airbus Advances A350F Ground Testing Ahead of Q3 2026 Maiden Flight
As the aviation industry anticipates the maiden flight of the next-generation A350F freighter in the third quarter of 2026, Airbus has officially commenced critical ground testing of the aircraft’s cargo-specific systems. According to an official press release from the manufacturer, current testing protocols are heavily focused on the aircraft’s Cargo Loading System (CLS) and the Main-Deck Cargo Door (MDCD) actuation system.
Utilizing large-scale physical test rigs located in Bremen, Germany, Airbus is working to validate the operational reliability of these new systems. By transitioning digital concepts into physical, full-scale testing environments, the company aims to de-risk the upcoming flight test campaign and ensure readiness for a highly stringent certification process.
The A350F is positioned by Airbus as a highly efficient, high-capacity freighter designed specifically to meet upcoming global environmental standards. With commercial Entry Into Service (EIS) scheduled for the second half of 2027, these ground tests represent a vital milestone in the aircraft’s development timeline.
Engineering the Next-Generation Freighter
Aircraft Profile and Efficiency
Based on the successful A350-1000 passenger platform, the A350F is a purpose-built freighter designed to carry a payload of up to 111 tonnes over a range of up to 4,700 nautical miles (8,700 km). According to the manufacturer’s specifications, over 70% of the aircraft’s structure is composed of advanced materials, including carbon fiber reinforced polymers, titanium, and aluminum alloys. This material composition makes the A350F significantly lighter than legacy competitors in its class.
Powered by Rolls-Royce Trent XWB-97 engines, Airbus projects that the A350F will deliver up to a 40% reduction in fuel consumption and carbon emissions compared to older generation freighters. Furthermore, the company highlights that the A350F is the only new-generation large freighter designed from its inception to meet the International Civil Aviation Organization’s (ICAO) enhanced COâ‚‚ emissions standards, which will become mandatory for new aircraft deliveries starting in 2028.
Inside the Bremen Test Facilities
To ensure the reliability of its new cargo architecture, Airbus is utilizing two primary physical test rigs in Bremen to simulate extreme operational scenarios.
“Cargo Zero” and the Cargo Loading System
The first major testing facility, dubbed “Cargo Zero,” is a 24-meter-long partial full-scale replica of the A350F’s cargo hold. According to Airbus, this rig includes the floor structure, cross beams, roller tracks, interior lining, and a fully functional Cargo Loading System complete with control panels and electrical power-drive units.
Engineers are using Cargo Zero to simulate extreme operational conditions, including floor flex and severe tilt angles. The rig tests the loading and unloading of various containers, accommodating the heaviest Unit Load Devices (ULDs) weighing up to 28 tonnes, alongside delicate high-tech cargo.
Additionally, Cargo Zero is instrumental in validating the Tail Tipping Warning System (TTWS). This safety innovation is designed to prevent the aircraft from tipping backward during ground loading. The system alerts operators to “abuse loading” scenarios, where excessive weight is placed at the rear, or adverse weather conditions, such as heavy snow accumulation on the tailplane or strong headwinds.
The All-Electric Main Deck Cargo Door
The A350F features the industry’s largest main deck cargo door, measuring 170 inches (4.3 meters) wide. In a significant design shift, Airbus has implemented an all-electric actuation system for the door, eliminating traditional hydraulic fluid lines to save space and reduce weight.
Testing for this component is conducted on the Cargo Door Actuation System Integration Bench (CDAS SIB). This rig utilizes a 20-tonne frame holding a metal test door that replicates the exact stiffness, weight, and center of gravity of the final carbon-fiber composite door.
The system is designed to fully open or close the massive door within 60 seconds, even in wind speeds of up to 40 knots.
According to the testing parameters, the CDAS SIB repeatedly opens and closes the door under simulated structural loads to validate the new electric Geared Rotary Actuators and patented latching systems.
Production Milestones and Stricter Certification
Assembly and Automated Testing
Recent weeks have seen significant physical progress on the first test aircraft. In late April 2026, Airbus completed the manufacturing of the first actual main deck cargo door at its composites facility in Illescas, Spain. The component was subsequently delivered to the Final Assembly Line (FAL) in Toulouse, France, where it was integrated into the fuselage of the first test aircraft, designated MSN700.
To streamline production and testing, Airbus engineers have co-designed automated testing protocols. The Cargo Loading System, which features hundreds of electrical components, now utilizes a new automated self-test that can check over 1,300 wires directly from the cockpit in just a few minutes upon aircraft power-up. Furthermore, engineers are testing a new main-deck drainage system by pumping over 180 liters of water into the aircraft to ensure that melted snow or cleaning fluids can be safely removed without structural pooling.
Navigating EASA Amendment 27
The maiden flight of MSN700 is targeted for the third quarter of 2026, with a second test aircraft (MSN701) slated to join the flight test campaign shortly after. Airbus has opted to certify the A350F under the European Union Aviation Safety Agency’s (EASA) latest and most stringent guidelines, specifically Amendment 27 of the CS-25 regulations. This standard is notably more rigorous than the one applied to the passenger A350-1000 in 2017.
To accommodate this stricter certification process, Airbus initiated ground testing earlier than is typical for derivative programs. The manufacturer is targeting simultaneous certification from EASA and the FAA by the second quarter of 2027.
AirPro News analysis
At AirPro News, we observe that the A350F program represents a critical pivot in freighter design philosophy. The shift from hydraulic to electric systems for heavy mechanical tasks, such as the operation of the 170-inch cargo door, highlights a broader industry trend toward lighter, more easily maintained aircraft architectures. By eliminating heavy hydraulic lines, Airbus is not only reducing the aircraft’s empty weight but also simplifying long-term maintenance for cargo operators.
Furthermore, the extensive use of physical, full-scale test rigs like “Cargo Zero” and the “CDAS SIB” months before the first flight illustrates a proactive de-risking strategy. Aerospace manufacturers are increasingly attempting to identify and solve complex integration issues on the ground to prevent costly, high-profile delays during the flight testing phase. By building the A350F to comply with the 2028 ICAO emissions standards and EASA’s stricter Amendment 27 safety regulations, Airbus is clearly positioning the aircraft as a “future-proofed” asset for global logistics companies.
Frequently Asked Questions (FAQ)
- When is the first flight of the Airbus A350F?
The maiden flight of the first test aircraft (MSN700) is targeted for the third quarter of 2026. - What is the payload capacity of the A350F?
The A350F is designed to carry a payload of up to 111 tonnes over a range of up to 4,700 nautical miles. - How does the A350F cargo door operate?
Unlike traditional freighters that use hydraulics, the A350F features an all-electric actuation system capable of opening or closing the 170-inch wide door in 60 seconds, even in 40-knot winds. - When will the A350F enter commercial service?
Airbus is targeting commercial Entry Into Service (EIS) for the second half of 2027, following simultaneous certification from EASA and the FAA expected in the second quarter of 2027.
Photo Credit: Airbus
Aircraft Orders & Deliveries
Lufthansa Group Orders 20 New Airbus and Boeing Long-Haul Jets
Lufthansa Group orders 20 widebody aircraft including Airbus A350-900 and Boeing 787-9, with deliveries planned for 2032-2034.
This article is based on an official press release from Lufthansa Group.
The Lufthansa Group has announced a significant expansion of its future long-haul fleet, securing an order for 20 new widebody aircraft split evenly between Airbus and Boeing. According to an official press release from the company, the supervisory board approved the acquisition of 10 Airbus A350-900s and 10 Boeing 787-9s.
Valued at approximately $7.7 billion at list prices, the new twin-engine jets are scheduled for Delivery between 2032 and 2034. This strategic procurement underscores the German aviation conglomerate’s ongoing commitment to modernizing its operations and reducing its environmental footprint over the next decade.
Fleet Modernization and Delivery Timeline
Expanding the widebody backlog
The latest agreement adds to an already substantial backlog for the European airline group. With this new commitment, the Lufthansa Group’s total order book now stands at 232 latest-generation aircraft, which includes 107 next-generation long-haul jets, as stated in the company’s release.
The 20 newly ordered aircraft will begin arriving in 2032, stepping in to replace older, less fuel-efficient models currently in service across the group’s various passenger Airlines. The company noted that specific decisions regarding which of its subsidiary airlines will operate the new A350s and 787s, as well as their hub assignments, will be determined at a later date.
Strategic Benefits and Sustainability
Driving operational efficiency
A primary driver behind the dual order is the pursuit of operational standardization. By focusing on the A350 and 787 families, the Lufthansa Group aims to reduce fleet complexity. The company highlighted that this streamlining will enhance operational flexibility and stability while simultaneously lowering maintenance and operating costs. Furthermore, operating fewer aircraft types generates synergies in critical areas such as cockpit and cabin crew licensing, as well as spare parts management.
Sustainability also remains a central theme in the group’s fleet strategy. The transition to modern twin-engine widebodies is expected to yield significant reductions in fuel consumption and carbon emissions compared to the older jets they will replace.
“By ordering 20 additional long-haul aircraft, we are making a sustainable investment in the future of the Lufthansa Group. It is a clear commitment to a modern fleet, to premium quality, and to further reducing CO2 emissions,” said Carsten Spohr, Chairman of the Executive Board and CEO of Deutsche Lufthansa AG, in the press release.
AirPro News analysis
This latest Orders from the Lufthansa Group highlights the long-term planning required in today’s constrained aerospace supply chain. By securing delivery slots for 2032 through 2034, the airline group is ensuring a steady pipeline of replacement aircraft well into the next decade. We observe that splitting the order between Airbus and Boeing maintains a balanced relationship with both major airframers, a traditional hallmark of Lufthansa’s procurement strategy that mitigates delivery risks and leverages competitive pricing.
The emphasis on the A350-900 and 787-9 also points to a continued shift away from older, less efficient aircraft. While the specific retiring types were not named in the release, the timeline aligns with the eventual phase-out of older widebodies across the group’s network. The stated list price of $7.7 billion is standard industry practice for announcements, though airlines typically negotiate substantial discounts for orders of this magnitude.
Frequently Asked Questions
What aircraft did the Lufthansa Group order?
The Lufthansa Group ordered 10 Airbus A350-900s and 10 Boeing 787-9s, totaling 20 new long-haul aircraft.
When will the new aircraft be delivered?
According to the company, deliveries for these newly ordered jets are scheduled to take place between 2032 and 2034.
How much is the order worth?
The official press release states the order has a list price value of $7.7 billion, though airlines typically receive significant discounts on list prices.
Which airlines will operate these new planes?
The Lufthansa Group has not yet announced which of its subsidiary airlines or hubs will receive the new aircraft, those decisions will be made closer to the delivery dates.
Sources: Lufthansa Group
Photo Credit: Lufthansa Group
Commercial Aviation
FAA Clears MD-11 Freighters to Resume Flights After Grounding
FAA approves Boeing’s fix for MD-11 freighters, ending six-month grounding after UPS crash. FedEx resumes flights; UPS retires fleet.
The Federal Aviation Administration (FAA) has officially cleared the McDonnell Douglas MD-11 freighter fleet to return to the skies. According to reporting by FreightWaves, the agency approved Boeing’s maintenance and inspection protocols on May 11, 2026, effectively ending a six-month global grounding of the aircraft type.
The worldwide grounding was initiated in November 2025 following the tragic crash of UPS Flight 2976 in Louisville, Kentucky, which claimed 15 lives. With the new hardware fixes validated by regulators, operators are taking divergent paths. FedEx Express has immediately resumed commercial flights, while UPS has opted to retire its MD-11 fleet entirely.
We at AirPro News recognize the profound impact this grounding had on the global air cargo network, particularly during the 2025 peak holiday shipping season. While the return of the MD-11 brings operational relief to remaining operators, the aging aircraft continues to face intense political and regulatory scrutiny.
The Engineering Fix and Return to Service
Addressing the Structural Failure
The grounding stemmed from severe structural failures identified during the preliminary investigation of the UPS crash. According to FreightWaves, the National Transportation Safety Board (NTSB) found fatigue cracks in the left pylon’s aft mount lug and spherical bearing assembly. These cracks developed over numerous flights, culminating in an overstress failure that caused the engine to tear free from the wing.
To resolve the issue, Boeing, which acquired McDonnell Douglas in 1997, developed a highly invasive hardware fix. The approved protocol requires the installation of new spherical bearings in the aft mounts of each side engine pylon, alongside comprehensive inspections of the aft bulkhead.
“After extensive review, the FAA approved Boeing’s protocol for safely returning MD-11 airplanes to service,” the agency stated.
FedEx Express Resumes Operations
FedEx Express, currently the largest remaining operator of the MD-11, moved swiftly to implement the required fixes. FreightWaves reports that FedEx maintenance teams removed pylons from parked aircraft and shipped them to hubs in Memphis and Indianapolis for the necessary bearing replacements.
Following these modifications, FedEx conducted a successful test flight on May 9, 2026, flying from Memphis to Huntsville, Alabama, and back. By Sunday, May 10, the carrier operated its first commercial MD-11 flights in six months, servicing routes from Memphis to Los Angeles and Miami. FedEx plans to gradually phase its 28 remaining MD-11s back into service on a tail-by-tail basis, with intentions to operate the jets until 2032 to meet ongoing cargo demand.
Diverging Airline Strategies and Industry Impact
UPS and Western Global Responses
The extended grounding forced major logistical pivots across the air cargo sector, prompting airlines to activate spare aircraft and shift packages to ground networks. However, the long-term response to the MD-11’s viability has been sharply divided among the three remaining U.S. operators.
Unlike FedEx, UPS accelerated its fleet modernization plans in the wake of the crash. According to FreightWaves, UPS announced in January 2026 that it was permanently retiring its entire fleet of 28 MD-11s. Meanwhile, Western Global Airlines, a smaller Florida-based cargo carrier, was forced to indefinitely furlough its 147 MD-11 pilots in November 2025 due to the grounding. The airline has not yet publicly disclosed its future plans for the aircraft.
AirPro News analysis
We note that the divergence in fleet strategies between FedEx and UPS highlights a broader industry transition. UPS’s decision to permanently retire the MD-11 underscores a rapid shift toward newer, more fuel-efficient twin-engine freighters, minimizing the risk associated with maintaining aging tri-jet airframes. Conversely, FedEx’s commitment to flying the MD-11 until 2032 emphasizes the aircraft’s unique payload and volumetric capabilities, which remain difficult to replace in the short term without massive capital expenditure. The grounding’s timing during the 2025 peak season exposed the fragility of relying on older aircraft types, likely accelerating long-term fleet renewal discussions across the global cargo sector.
The UPS Flight 2976 Tragedy and Ongoing Scrutiny
Remembering the Louisville Crash
The catalyst for the grounding remains one of the deadliest cargo-aircraft accidents in U.S. history. On November 4, 2025, UPS Flight 2976 crashed seconds after takeoff from Louisville Muhammad Ali International Airport. Flight data and surveillance video showed the left engine and pylon separating during the takeoff rotation, with the aircraft reaching an altitude of only 30 to 100 feet before impacting an industrial area.
The disaster resulted in 15 fatalities, including all three crew members and 12 individuals on the ground, one of whom succumbed to severe injuries on December 25, 2025. An additional 23 people on the ground were injured.
Political Pushback and Upcoming Hearings
Despite the FAA’s clearance, the MD-11 remains under a microscope. FreightWaves reports that on May 1, 2026, U.S. Representative Morgan McGarvey (D-KY) sent a letter to the FAA demanding the permanent grounding of the aircraft, citing a documented history of mechanical issues.
Furthermore, the NTSB has scheduled a two-day public investigative hearing regarding the crash for May 19–20, 2026, in Washington, D.C. Investigators are expected to review how UPS applied previous inspection instructions relayed by Boeing in 2011 regarding similar structural components. Litigation is also ongoing, with lawsuits filed against UPS, Boeing, and the late pilot’s estate over the fatal accident.
Frequently Asked Questions
Why was the MD-11 freighter fleet grounded?
The FAA grounded the global MD-11 fleet in November 2025 following the fatal crash of UPS Flight 2976 in Louisville, Kentucky. The NTSB determined the crash was caused by an overstress failure resulting from fatigue cracks in the left engine pylon’s aft mount lug and spherical bearing assembly.
What is the approved fix for the MD-11?
Boeing developed a hardware fix that requires highly invasive inspections and the installation of new spherical bearings in the aft mounts of each side engine pylon, as well as inspections of the aft bulkhead.
Are all airlines resuming MD-11 flights?
No. While FedEx Express has implemented the fixes and resumed commercial flights with plans to operate the aircraft until 2032, UPS opted to permanently retire its entire fleet of 28 MD-11s in January 2026.
Sources: FreightWaves
Photo Credit: FedEx
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