October 14, 2026 - No. 41 In This Issue : FAA Issue New AD for Largest Passenger Aircraft in the World Engine : Sixth-gen bomber’s production: US firm breaks ground on B-21 Raider production facility : New Procedure Lets Maintainers See ‘Blind Spot’ in F-16 Engine That Caused Crashes : BAE Lands Contract for F-35 Block 4 Electronic Warfare Systems : Super Hornet weapons computer can no longer be supported : The US Air Force's New B-52J 'Super' Stratofortress Bomber Is Running Late and $3,000,000,000 Over Budget : Flight Controllers & ESCs for Mission-Critical Drones & Robotics : US Navy taps advanced 3D-printed rocket motors for next-generation missiles : 𝗧𝗵𝗮𝘁 𝘁𝗶𝗻𝘆 $𝟮,𝟱𝟬𝟬 𝘀𝗽𝗮𝗿𝗸 𝗽𝗹𝘂𝗴 𝗸𝗲𝗲𝗽𝘀 𝗮 $𝟯𝟳𝟱 𝗺𝗶𝗹𝗹𝗶𝗼𝗻 𝗮𝗶𝗿𝗰𝗿𝗮𝗳𝘁 𝘀𝗮𝗳𝗲𝗹𝘆 𝗶𝗻 𝘁𝗵𝗲 𝘀𝗸𝘆 FAA Issue New AD for Largest Passenger Aircraft in the World Engine The directive targets specified GP7270, GP7272 and GP7277 engines, with urgent replacement deadlines following an uncontained turbine seal failure. By Kevin Derby October 11, 2026 Google News Photo: Clément Alloing WASHINGTON, D.C.- The US Federal Aviation Administration (FAA) has ordered the replacement of certain high-pressure turbine (HPT) interstage seals in Engine Alliance GP7200-series engines used on the Airbus A380. The directive follows an uncontained engine failure that forced an A380 to shut down an engine and abort its takeoff. The airworthiness directive takes effect on October 23, 2026, and targets specified GP7270, GP7272, and GP7277 engines. The FAA has imposed urgent replacement deadlines for 15 affected seals to prevent another failure that could cause an engine fire and damage the aircraft. Photo: Clément Alloing FAA Targets Airbus A380 Engine Seals After Aborted Takeoff The FAA issued Airworthiness Directive 2026-20-12 after receiving a report of an uncontained failure involving an HPT interstage seal in an Engine Alliance GP7270 engine installed on an Airbus A380. The incident resulted in an engine shutdown and an aborted takeoff. The directive applies to specific engine serial numbers and high-pressure turbine interstage seals identified in Engine Alliance Alert Service Bulletin EAGP7-A72-479, dated September 4, 2026. It does not require the replacement of every seal or every GP7200-series engine in service. The FAA has ordered operators to remove 15 HPT interstage seals with the highest number of flight cycles since their last overhaul. Operators must replace the affected components with parts eligible for installation under the manufacturer’s instructions. ↗ The agency has warned that leaving the affected seals in service could lead to another uncontained failure, potentially resulting in an engine fire and damage to the aircraft. The FAA’s published directive does not identify the airline operating the aircraft involved in the incident, its registration or the airport where the event occurred. Therefore, the airline’s IATA code and the airport’s IATA code cannot be confirmed from the available information. Photo: Clément Alloing | Flick Investigation Identifies Potential Cause of Engine Seal Failure The manufacturer’s investigation found that cracking most likely began at the locating features, known as clocking keys, between the HPT interstage seal and the aft shaft of the first-stage turbine disk. Investigators identified relative rotation of the seal, described as clocking, as a contributing factor in the failure. The manufacturer also found that seals reassembled during an overhaul showed greater clocking movement. However, the investigation has not established the definitive root cause. The FAA has introduced the replacement requirement as an interim safety measure while the investigation and development of a final corrective action continue. The findings have prompted the agency to target seals based on their serial numbers and service history rather than impose a blanket replacement requirement across the entire engine fleet. Photo: By aeroprints.com, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=32511914 FAA Sets Urgent Replacement Deadlines The directive becomes effective on October 23, 2026. Compliance deadlines depend on the affected seal’s serial number and the requirements specified in the applicable service bulletin. The FAA has divided the affected components into three groups, with the earliest replacements required within 50 flight cycles or 30 days after the directive’s effective date, whichever occurs first. The remaining compliance deadlines extend to 150 flight cycles or 90 days, whichever occurs first, as specified for the relevant parts. The FAA requires operators to follow Engine Alliance Alert Service Bulletin EAGP7-A72-479, dated September 4, 2026. The bulletin identifies the affected engine serial numbers and seal part numbers and provides instructions for removing and replacing the components. An affected seal is identified as part number 2047M99P02 with a serial number listed in Appendix A of the service bulletin. A part eligible for installation must not be one of the identified affected parts. Operators must complete the required work within the applicable deadlines unless they have already complied with the directive. Photo: By tjdarmstadt – IMG_9349.jpg, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=61529942 FAA Adopts Directive Without Prior Public Consultation The FAA adopted the airworthiness directive without first seeking public comments, citing the immediate safety risk and the short compliance deadlines. The agency determined that waiting for the usual notice-and-comment process could delay action needed to address the possibility of another uncontained seal failure. It also concluded that the directive needed to take effect in less than 30 days. However, the rule allows interested parties to submit comments after its adoption. The FAA must receive comments by November 23, 2026, under Docket No. FAA-2026-11801. The agency has classified the directive as an interim action. It may introduce further rulemaking if investigators identify a final corrective action that requires additional regulatory measures. Photo: By Hyeonwoo Noh – http://www.airliners.net/photo/Korean-Air/Airbus-A380-861/2515862/L/, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=38818177 FAA Estimates Engine Seal Replacement Cost at $528,150 The FAA estimates that replacing an affected HPT interstage seal will cost $528,150 per engine. This includes $527,300 for parts and $850 in labour, based on 10 work-hours at $85 per hour. The agency estimates that the directive affects zero engines installed on aircraft registered in the United States. Consequently, it lists the compliance cost for US operators as $0. That estimate does not establish the total number of affected engines or aircraft worldwide. The FAA has not specified how many aircraft have the affected components installed. The directive’s scope is determined by the affected engine and seal serial numbers listed in the manufacturer’s service bulletin, rather than by aircraft type alone. Photo: Kevin Hackert | Flickr What the FAA Directive Means for Airbus A380 Operators The directive requires operators with affected components to identify the relevant seals, remove them from service and install eligible replacements within the prescribed compliance period. The findings also highlight the importance of tracking component history during engine overhauls. The manufacturer’s investigation identified greater clocking movement in seals that had been reassembled during overhaul, although the precise cause of the failure remains under investigation. For operators, compliance depends on checking the affected serial numbers and following the service bulletin’s instructions. The FAA’s interim action addresses the immediate safety concern while leaving room for further measures once the investigation establishes whether additional corrective action is necessary. Stay tuned with us. Further, follow us on social media for the latest updates. Join us on Telegram Group for the Latest Aviation Updates. Subsequently, follow us on Google News Sixth-gen bomber’s production: US firm breaks ground on B-21 Raider production facility Currently in flight test, the B-21 program remains on track to have aircraft on the ramp at Ellsworth Air Force Base, South Dakota, in 2027. By Prabhat Ranjan Mishra Military Oct 08, 2026 07:28 PM EST A second B-21 Raider, the nation’s sixth-generation stealth bomber, joins flight testing at Edwards Air Force Base, Calif. Northrop Grumman The United States is soon to get a new facility, which will support the B-21 Raider production-capacity. Recently, the Department of the Air Force alongside Northrop Grumman broke ground on the new final assembly line at Air Force Plant 42. The development is a significant step toward expanding production capacity for the B-21 Raider and delivering combat capability to the Joint Force faster. Annual B-21 production capacity to be increased by 25% The groundbreaking kicks off over one million new square feet of facilities that will support the B-21 Raider production-capacity expansion announced earlier this year. The effort is part of the agreement between the DAF and Northrop Grumman that increases annual B-21 production capacity by 25% while maintaining focus on cost, schedule and performance. “This groundbreaking represents more than construction; it represents a sustained commitment to delivering the capability our nation needs at the speed the security environment demands,” said Gen. Dale White, director, Critical Major Weapon Systems and Direct Reporting Portfolio Manager to the Deputy Secretary of War. “The B-21 Raider is foundational to the Air Force’s future long-range strike capability, and this investment strengthens the industrial capacity required to field that capability faster.” Next-generation stealth bomber fleet The DAF is applying $4.5 billion in funding previously authorized and appropriated under fiscal year 2025 reconciliation legislation to accelerate production of the approved B-21 acquisition profile of 100 aircraft, building on the program’s demonstrated performance to compress delivery timelines for the next-generation stealth bomber fleet, according to a press release. “The B-21 team has established the foundation to accelerate production responsibly,” said Col. Nicholas Jordan, B-21 Systems program director, Rapid Capabilities Office. “This investment in Palmdale will provide the infrastructure, workforce and manufacturing capacity needed to deliver the Raider to the Air Force at an increased rate.” The B-21 Raider is a long-range, penetrating strike aircraft designed to operate in highly contested environments. It integrates advanced stealth, resilient networking and modern, data-driven command-and-control architecture to support the Joint Force’s ability to deter and, if necessary, defeat emerging threats, as per the release. The project highlights the growing importance of the defence industrial base in determining how quickly military modernization programmes can deliver results. Advanced combat aircraft require highly specialised components, manufacturing processes and technical expertise. Expanding final assembly facilities must therefore be matched by reliable deliveries from suppliers and sufficient skilled labour across the wider production network. More broadly, the expansion illustrates how advanced technology, industrial investment and acquisition reform are increasingly interconnected in modern defence planning. As the B-21 progresses through testing and production, the ability to deliver the aircraft at scale will be just as important as its technological sophistication. If the expansion meets its objectives, it could help the United States strengthen its long-range strike capabilities, reinforce strategic deterrence and prepare its bomber fleet for the demands of an increasingly contested global security environment. Jet-A Misfueling Blamed For Cessna 421 Accident The NTSB says a Cessna 421 crashed after being fueled with 145 gallons of Jet-A instead of 100LL. Amelia Walsh Wednesday, October 07, 2026 at 03:20 PM ET Verified Edited By: Matt Ryan NTSB A Cessna 421 that went down in Kentucky in August was fueled with 145 gallons of Jet-A instead of avgas, according to the National Transportation Safety Board (NTSB)’s final report. The Cessna 421C, registered as N28RH, departed Blytheville, Arkansas, on Aug. 21 on an IFR flight to Lima, Ohio. Shortly after takeoff, the No. 1 cylinder on the right engine began running hot. The pilot leveled at 5,000 feet, but the problem continued, and he shut down and feathered the right engine. The remaining engine then began to deteriorate, and the airplane could no longer maintain altitude. The pilot attempted to reach an airport but made a forced landing in a cornfield about two miles away. The aircraft sustained substantial damage to the right engine mount, fuselage and empennage. Two people suffered serious injuries and two had minor injuries. Investigators determined that the airplane had been topped off with Jet-A at the departure airport. The fueler told the NTSB he added about 70 gallons to the right wing and 75 gallons to the left. The fueler said the pilot had only asked for the airplane to be topped off. He assumed the pilot wanted Jet-A because pilots seeking 100LL typically used a nearby self-service pump, according to the interview. The pilot told investigators he did not specifically request 100LL. He also said he read the fuel receipt after fueling and saw that Jet-A had been supplied, but the group was in a hurry to get home. They departed without inspecting or sampling the fuel. The NTSB determined the probable cause was the misfueling by the refueler, with the pilot’s failure to verify the airplane had been properly fueled before departure listed as a contributing factor. The airport manager told investigators that the fueler was no longer working at the airport and that the airport had begun creating a form for pilots to specify the type and quantity of fuel they want. Prevent Misfueling through Standardized Procedures (SA-051) The Problem Misfueling can occur for a variety of reasons and typically results in a complete loss of engine power, which may lead to serious injuries and/or death. • While fuel nozzles and fuel fillers are designed to prevent misfueling, our investigations have found numerous modifications that can allow misfueling to occur. For example, aviation gasoline (avgas) nozzles are small and round and fit into smaller opening fuel filler ports while jet fuel nozzles are larger and flattened like a duck’s bill, requiring a larger fuel filler port. However, our investigations have shown that some fixed base operators (FBOs) are modifying their jet fuel nozzles with the smaller avgas nozzles or other smaller type nozzle, such as the round jet spout nozzle, to more easily fuel smaller turbine helicopters. These non-standard jet fuel nozzles can easily fit into the smaller filler ports of aircraft that require avgas and allow for misfueling to occur When an aircraft is modified from using a reciprocating engine (avgas) to a turbine engine (jet fuel), some supplemental type certificates (STCs) have not required that the fuel filler port size be changed accordingly. As a result, line personnel have had to make accommodations such as installing an avgas fuel nozzle or round jet nozzle on a jet fuel truck to allow jet fuel into the smaller avgas fuel filler port. These STC modifications can lead to fueling confusion because the same model or similar looking aircraft may now have different fuel requirements. • Once the wrong fuel is pumped into an aircraft, identifying that misfueling has occurred can be difficult, if not impossible, to detect. New Procedure Lets Maintainers See ‘Blind Spot’ in F-16 Engine That Caused Crashes Oct. 9, 2026 | By Greg Hadley The Air Force has figured out a way for maintainers to inspect what had been a “blind spot” in F-16 engines, after problems in that area led to the catastrophic crashes of two jets in recent years. A spokesperson for the Air Force Life Cycle Management Center confirmed the new procedure to Air & Space Forces Magazine last month. Task & Purpose first reported the development. AFLCMC’s propulsion directorate developed the new process, which does not require any modifications to the engine or new equipment, the spokesperson added. The inspections is meant specifically for Pratt & Whitney F100 engine models—some F-16s are powered by GE Aerospace F110 models. The F100 engine consists of 13 “stages,” each with variable vanes and compressor blades. Air flows through the stages, which rotate to accelerate, compress, and then regulate the airflow before releasing it into the engine’s combustion chamber. If a vane is turned or misaligned, however, it creates “abnormal aerodynamic forces” and “irregular wake patterns” that put stress on the compressor blades in the following stages, according to Air Force reports. That can lead to vanes or blades cracking or breaking, causing the entire engine to fail. An Air Force Accident Investigation Board report graphic illustrates the stages of an F-16 engine. Maintainers can inspect many of the F100 engine’s stages using a borescope—a camera mounted on a flexible tube. There are even borescope ports for them to do so. But the fourth and especially the fifth stages are hard to reach. Before the development of this new inspection process, the Air Force said it was impossible for maintainers to inspect them without completely disassembling the engine, something only done at depots and not while the engine is installed on the aircraft. This blind spot proved dangerous. An F-16 crashed near Holloman Air Force Base, N.M., in April 2024, and another jet, belonging to the U.S. Air Force Thunderbirds, crashed in the California desert in December 2025. Subsequent investigations determined that in both cases, the F-16s’ engines had failed because of misaligned vanes in the fifth stage. The pilots in both crashes were able to safely eject, but both jets were completely destroyed and the total damages exceeded $54 million. Notably, both F-16 engines in question had experienced foreign object debris, or FOD, events in the years prior to the crashes. In both cases, maintainers noted damage to early stages of the inlet fan but found no issues with the fourth, seventh, or eighth stages—and the F-16’s technical orders did not require maintainers to remove and disassemble the engine core to inspect the fifth and sixth stages after a FOD event if no damage is found in the surrounding stages. While investigators were unable to conclusively say if the FOD events led to the vanes becoming misaligned, the Air Force has now updated its technical orders to require the new inspection procedure to check the fifth stage of the engine after every FOD event. “Additionally, the program office has worked with Pratt & Whitney to redesign the vane arm to be more impact resistant. The new design is qualified, on order, and will be installed via forced retrofit as soon as available,” the AFLCMC spokesperson said. BAE Lands Contract for F-35 Block 4 Electronic Warfare Systems Oct. 9, 2026 | By Stephen Losey BAE Systems has received a contract from Lockheed Martin to install an upgraded Block 4 electronic warfare system into new F-35 Joint Strike Fighters, as well as to retrofit some older jets. BAE’s AN/ASQ-239 EW systems will be installed on lots 20 to 22 of the F-35, the company said in an Oct. 6 statement, and some older F-35s with previous versions of the EW system will be retrofitted to have the latest version installed. “BAE Systems has been the EW supplier for the F-35 program for the past 21 years, successfully designing and developing the Block 1, Block 2, and Block 3 configurations” of the AN/ASQ-239, Amber Dolan, BAE’s vice president of F-35 solutions, said in a follow-up statement to Air & Space Forces Magazine. “We are currently developing Block 4 systems that can accelerate the delivery of advanced EW capabilities via adaptable hardware and incremental software updates.” The updated EW suite is part of a broader program of upgrades to the Lockheed Martin-made F-35, collectively referred to as Block 4. Lockheed previously awarded BAE a $491 million contract for the F-35 EW systems in 2023, and another $493 million contract in 2021. The Block 4 EW systems that will be in F-35 lots 20 and beyond “offer improvements in threat detection, situational awareness, and capabilities to counter modern threats,” Dolan said. BAE declined to say how much the contract is worth and how many EW systems it will deliver for new jets and retrofits. The company said it has delivered more than 1,500 EW systems for the F-35 so far. BAE said the AN/ASQ-239 system provides both offensive and defensive EW capabilities, which give pilots a 360-degree view of the battlefield and allow the F-35 to operate in environments protected by enemy fighters, missiles, drones, or integrated air defense systems. Its passive long-range sensing capabilities combine with high-speed signal processing and advanced algorithms to allow pilots to detect and counter threats before an enemy can act, the company said. The system’s software can also be quickly updated to account for new threats. A previous upgrade to the AN/ASQ-239 EW system—called the Digital Channelized Receiver/Techniques Generator and Tuner Insertion Program, or DTIP—was launched in 2018. Those DTIP improvements allowed for previous versions of the EW system to be condensed into a smaller footprint that required less power, which created space for the new Block 4 modernization. BAE said it has made investments in facilities—including the 2022 opening of a new 200,000-square-foot engineering and production facility in Manchester, N.H.—to help design and develop new EW systems. BAE also designs and manufactures EW systems at facilities in Merrimack, N.H., Nashua, N.H., and Austin, Texas. Super Hornet weapons computer can no longer be supported By Colton Jones Oct 10, 2026 An F/A-18F Super Hornet launches from USS Abraham Lincoln, Oct. 1, 2026. The U.S. Navy plans to have Boeing redesign parts of the computer that controls weapons and external stores on its F/A-18 and EA-18G fleet, after concluding that the current unit can no longer be supported because key components are no longer available. Naval Air Systems Command’s PMA-265, the program office for the F/A-18 Super Hornet and EA-18G Growler, said in a notice posted Oct. 9 that it intends to award Boeing an order under an existing basic ordering agreement to design and qualify replacement parts for the AN/AYK-22 Stores Management Processor. The Navy did not disclose the order’s value, how many processors are involved or when the work would be finished. The stores management processor sits between the jet’s mission computer and everything carried on its pylons, including missiles, bombs, fuel tanks and pods. It is the hardware that tells the aircraft what is loaded, manages weapon selection and passes the commands needed to release a store. The Navy said in the notice that the AN/AYK-22 is no longer supportable because some of its key parts have become obsolete, a problem the military calls diminishing manufacturing sources and material shortages, which occurs when suppliers stop making components that older systems depend on. Although the Navy intends to go to Boeing without a competition, the notice is a sources-sought request, a step agencies use to check whether other companies could do the job. Interested firms have until Oct. 28 to send a one-page capability statement showing experience in finding and qualifying obsolete electronic parts for military aircraft, access to the required technical data and their quality certifications. The Navy also asked for published price lists, lead times and current stock levels for items that could meet the need. The work is part of keeping the Super Hornet and Growler in service for decades after production ends. Boeing’s St. Louis line is due to deliver its last new Super Hornets in 2027 after the Navy’s final order for 17 jets in 2024, and Boeing no longer builds the Growler. Last month, the Navy paid Boeing $16.7 million to plan the shutdown of both production lines, including an inventory of government-owned tooling, on the same day it picked Boeing to develop the F/A-XX, the future carrier fighter meant to eventually replace both jets. Existing Super Hornets are going through Boeing’s Service Life Modification program, which upgrades older jets to the Block III standard and extends their airframe life to 10,000 flight hours, with that work expected to continue into the mid-2030s. The US Air Force's New B-52J 'Super' Stratofortress Bomber Is Running Late and $3,000,000,000 Over Budget Sean Spoonts Summary and Key Points: The B-52J is the Stratofortress’s 13th upgrade program at 74. Rolls-Royce F130 turbofans replace 1960s Pratt & Whitney TF33s, giving the bomber 30% more range, a 9,000-mile combat radius, and a 70,000-pound bomb load, plus a Raytheon/Boeing AN/APQ-188 AESA radar, IRIS low-Earth-orbit satellite communications, and a crew cut from five to four. The sole B-52H test bed crashed at Edwards Air Force Base in June 2026, killing eight; GAO says $3 billion over and running behind. The B-52J: A Mixed Bag? If you took a WWII B-29 Superfortress and fitted it with modern, efficient turboprop engines, digital avionics, modern communications, and smart munitions, you’d have a very capable combat aircraft, even though it is nearly 90 years old. Modern aircraft now carry high-tech sensors, targeting systems, and precision munitions into battle. They no longer have to fight their way into a target, absorbing punishment from flak guns and enemy fighters along the way. Now, the mission profile is to approach undetected, or, once air dominance is established, drop laser-guided bombs within feet of a target, then return to base. Bombers are still prized for range, payload, and reliability. This is why the B-52 Stratofortress is still flying after seventy-four years. It lifts a lot of bombs very high, goes very far, and is exceptionally reliable. The “Buff” is currently undergoing its thirteenth distinct upgrade program. It will carry the “J” model designation. A B-52 Stratofortress assigned to the 69th Bomb Squadron, Minot Air Force Base, North Dakota, flies during Red Flag-Nellis 22-3 at Nellis Air Force Base, Nevada, July 18, 2022. RF-N 22-3 provides realistic combat training that saves lives while increasing combat effectiveness. (U.S. Air Force photo by Airman 1st Class Makenna Gott) The new upgrades include all-new engines, radar upgrades, avionics and communications upgrades, and a reduction in crew from five to four. New Engines Mean ‘Less Pain At The Pump’ For The B-52J The current Pratt & Whitney TF-33 jet engines, dating back to the 1960s, will be swapped for Rolls-Royce F130 high-bypass turbofans. These engines promise to extend the B-52J’s range by 30% through improved fuel efficiency. That is no small thing for a bomber with a combat range of almost 9,000 miles and a 70,000-pound bomb load. A 30% reduction in fuel consumption translates to a like increase in range or loiter time over a target. It could also mean the B-52J could increase its bomb load. New Eyes In The Sky For The B-52J Bombers have to find their way to the target and drop bombs to succeed, so the upgrade will include an advanced Active Electronically Scanned Array (AESA) radar, expected to be the Raytheon/Boeing AN/APQ-188, which replaces the current F/A-18 Block III APG-79 system. Rather than use a spinning or rotating radar dish(which can break in flight), AESA systems use a fixed panel with hundreds or thousands of tiny radar transceivers that can be phased or pointed in a direction in microseconds. The radar return is so detailed it could be mistaken for infrared video. Space-Based Communications For A New Space Age In The B-52J The first flight of the Stratofortress in1952 predates America putting a man into space in 1961 by nine years. Since then, B-52 communications have relied on line-of-sight radios for sending and receiving signals. The B-52J will get an IRIS system that uses low-Earth-orbit satellites, enabling instant voice, text, and data transmissions. It will integrate with the aircraft’s other systems and send real-time performance and tracking information back to base. If the B-52H has an engine problem, maintenance crews on the ground can see it, analyze it, and tell the flight crew what to do during the mission. Reducing The Crew Means Saving Fuel And Space On a passenger airliner, moving a single passenger some 9,000 miles costs between 35and-550 in fuel. If you removed the seat and about two hundred pounds of luggage, you would more than double that cost. Upgrades to radar and communications will mean the B-52J needs one fewer crewmember. In its current configuration, the B-52 has a five-person crew: pilot, co-pilot, weapons system operator, electronic warfare operator, and navigator. The integrated radar and satellite tracking system will eliminate the need for a dedicated navigator. The electronic warfare and weapons system operators will be cross-trained as navigators able to switch between screens to perform this role. Presumably, existing navigators will be retrained as weapons or electronic warfare operators and folded back into the now-reduced crew. These Upgrades Do Not Come Without A Human Cost. In June 2026, a B-52H serving as the sole test bed for the upgrade program crashed at Edwards Air Force Base in California, killing the entire crew of eight on board. This Stratofortress lacked the new Rolls-Royce engines and was testing the new radar system. Among the dead were two of Boeing’s program test engineers. The cause of the crash has not yet been determined, but it occurred before the second test aircraft was ready to fly. The Air Force states that the B-52J program remains on budget and on time despite the profound loss of the first test aircraft and its experienced crew. This claim seems to contradict a GAO report partially disclosed in July that said the upgrade program was about $3 billion over budget and behind schedule. Of greatest concern were the Rolls-Royce engines, with the GAO reporting that the “Commercial Engine Replacement Program will likely continue to face significant challenges as the Air Force plans to begin production with little to no developmental flight testing.” The Air Force will not replace these engines all at once, but incrementally through 2030. Flight Controllers & ESCs for Mission-Critical Drones & Robotics Arctic RAVN's products are engineered and assembled in Finland with components sourced entirely from Europe and allied nations By Mike Ball 08 Oct 2026 Arctic RAVN is a developer of high-performance, European-sourced electronic speed controllers, flight controllers, and propulsion components for mission-critical drones and unmanned systems. Unmanned Systems Technology (UST) is pleased to announce the addition of Arctic RAVN to our global supplier ecosystem. Their new Platinum supplier profile showcases a range of high-performance electronics engineered to meet the demanding requirements of defense UAV operations, including electronic speed controllers (ESCs), flight controllers, motors, and associated equipment. Designed and assembled in Finland using components sourced entirely from Europe and allied nations, Arctic RAVN’s products combine operational performance with supply chain resilience. Developed to operate independently or as part of an integrated hardware stack, these solutions support mission-critical unmanned platforms while strengthening European technological sovereignty and reducing reliance on single-source suppliers. Key products and capabilities from Arctic RAVN include: AR41ESC Electronic Speed Controller: A compact four-in-one ESC designed for demanding defense UAV applications, supporting 6–12S LiPo battery systems with a minimum continuous current of 60A per channel and 90A burst capacity. Its advanced protection features, bidirectional DShot compatibility, and lightweight construction make it ideal for SWaP-constrained platforms. AR32FC Flight Controller: A high-capacity H743-based flight controller supporting 4–14S LiPo input, featuring dual IMUs, integrated environmental sensing, multiple connectivity interfaces, and custom firmware for mission-critical flight control applications. European-Sourced Drone Electronics: High-performance ESCs, flight controllers, motors, and associated hardware engineered and assembled in Finland, supporting secure procurement and reducing supply chain dependencies. OEM Integration & Customization: Platform-specific engineering documentation, detailed performance data, pre-programmed chipsets, and customer-specific configurations enable streamlined integration into specialized unmanned systems. With a focus on reliability, performance, and integration flexibility, Arctic RAVN enables UAV manufacturers and defense system integrators to develop robust unmanned platforms using trusted European and allied-nation components. Comprehensive technical documentation, configurable hardware, and factory quality-control testing help simplify development workflows while ensuring that electronic systems meet the requirements of real-world operational environments. To learn more about how Arctic RAVN is advancing mission-critical drone electronics and strengthening European supply chain sovereignty, visit their full supplier profile on Unmanned Systems Technology. US Navy taps advanced 3D-printed rocket motors for next-generation missiles Ursa Major uses Lynx 3D printing to make scalable rocket motors as the US expands domestic production capacity. Read Next: New microwave weapon can zap drone swarms without burning through missiles By Jijo Malayil Military Oct 06, 2026 08:40 AM EST Ursa Major uses Lynx and 3D printing to expand production of scalable tactical motors. Ursa Major The US Navy has awarded two contracts worth a combined $137 million to develop solid rocket motors for two new missile programs. The contracts given to Colorado-based aerospace and defense company Ursa Major cover propulsion for a Compact Air-to-Air Missile (CAAM) and the medium-range version of the Naval Modular Missile (NMM). Contracts include funding of $91 million for the CAAM solid rocket motor and $46 million for the NMM Quad-Pack Medium-Range motor. The systems are part of the Navy’s efforts to develop new weapons for fighter aircraft and surface ships. Compact missile motor The $91 million CAAM contract covers a compact motor for an air-launched missile intended for fighter aircraft and future carrier-based drones. The $46 million NMM contract covers a larger motor for a ship-launched interceptor being developed to eventually replace members of the Navy’s Standard Missile family. The funding comes through the Office of the Under Secretary of War. For CAAM, Ursa Major is developing a 7-inch (178 mm) solid rocket motor. The diameter is similar to that of the AIM-120 AMRAAM and larger than the 5-inch AIM-9X Sidewinder. CAAM is designed as a short-range weapon that can be carried inside the weapons bays of stealth aircraft, allowing them to carry more air-to-air missiles without increasing their external weapons load. The motor uses Ursa Major’s Highly Loaded Grain technology, which increases the amount of propellant packed into the motor case. The approach is intended to provide higher energy within the limited volume available in a compact missile. Ursa Major is also developing the motor using manufacturing methods intended for full-scale production. This could allow the company to transition the design to higher-rate manufacturing after qualification rather than developing a separate production process. “By investing in CAAM and NMM, the Navy and OUSW are building solid rocket motor capacity now and getting new tactical air and naval capabilities into development sooner,” said Jason Meredith, president, Solid Missile Systems at Ursa Major, in a statement. NMM gains rocket motor The second contract covers a 10-inch (254 mm) solid rocket motor for the medium-range NMM. The motor is designed for high-rate production and compatibility with existing Navy shipboard launch systems. NMM is being developed as a modular naval missile family, with the medium-range version intended to fit four missiles into a single launch cell. This quad-pack configuration is similar to the Navy’s use of the Evolved Sea Sparrow Missile and would allow ships to carry more interceptors within the same launcher capacity. Ursa Major is using its Lynx manufacturing approach for the programs. The process relies heavily on additive manufacturing, or industrial 3D printing, to produce rocket motor components. The company is developing the motors with production scalability in mind as the US seeks to expand domestic solid rocket motor capacity. Solid rocket motor manufacturing has historically been concentrated among a small number of major US suppliers, including Northrop Grumman and L3Harris-owned Aerojet Rocketdyne. The Pentagon has been supporting additional production capacity as demand for missile interceptors and other weapons increases. The new contracts build on Ursa Major’s previous work with the Navy. In July, the service awarded the company $10 million to advance its MK 104 solid rocket motor through critical design review and static-fire testing. The MK 104 powers the Standard Missile-2 and Standard Missile-6 used by Aegis-equipped Navy ships. In February, Ursa Major also completed a $25 million cost-share program with the Navy and the Office of Strategic Capital. The effort involved designing, building, and static-firing a 10-inch Highly Loaded Grain motor and developing a proprietary solid propellant. The work was conducted with the Naval Air Warfare Center Weapons Division at China Lake and the Naval Surface Warfare Center Indian Head Division. 𝗧𝗵𝗮𝘁 𝘁𝗶𝗻𝘆 $𝟮,𝟱𝟬𝟬 𝘀𝗽𝗮𝗿𝗸 𝗽𝗹𝘂𝗴 𝗸𝗲𝗲𝗽𝘀 𝗮 $𝟯𝟳𝟱 𝗺𝗶𝗹𝗹𝗶𝗼𝗻 𝗮𝗶𝗿𝗰𝗿𝗮𝗳𝘁 𝘀𝗮𝗳𝗲𝗹𝘆 𝗶𝗻 𝘁𝗵𝗲 𝘀𝗸𝘆 ✈️ Behind every safe flight lies a world of precision maintenance most passengers never see, Let me take you inside the cockpit of aircraft engineering : Note: See video at the end of this article. The Hidden Symphony of Aircraft Safety : → Each A340-600 engine contains a sophisticated dual ignition system ↳ System A and System B provide redundancy for ultimate reliability ↳ Both must function flawlessly at 35,000 feet The Price of Precision : → Every 1,250 flights demands new spark plugs → Each plug costs more than a MacBook Pro → A full set runs north of $10,000 But heres what makes it fascinating : → These arent your cars spark plugs ↳ They withstand temperatures that would melt steel ↳ They fire reliably in the harshest conditions ↳ Theyre engineered to last 3+ years of continuous service The Real Cost of Cutting Corners : → A delayed replacement risks : ↳ Emergency landings ($150,000+) ↳ Schedule disruptions ↳ Passenger trust This is why aviation maintenance isnt just a job, its an art form where precision meets responsibility. Next time youre in the air, remember : youre flying safely because someone took the time to perfect these details. If you found this insightful, don’t forget to share it with your network. Curt Lewis