13 novembre 2019 | International, Aérospatial

German military refuses new A400M deliveries over safety concerns

CLEMENT CHARPENTREAU

The Bundeswehr, the German military, announced it would not accept deliveries of two A400M Atlas transport aircraft due to recurring technical problems.

While defining the aircraft as the “backbone” of its air transport capabilities, the Bundeswehr is concerned about recurring technical problems affecting its fleet. “During routine inspections of the mounting nuts on the propellers of the A400M already in flight, it was found that not all 24 nuts per propeller have the intended tightening torque,” revealed the Luftwaffe, the German air force, in a statement.

Increased inspections of the engine mounts, combustion chambers, and engine flap, as well as crack testing on several points, are also required and reduce the readiness of the A400M fleet.

In addition to technical deficiencies, the two latest aircraft that were about to be delivered did not meet the “contractually guaranteed properties”, leading to the refusal.

So far, the Bundeswehr has received 31 of the 53 A400M it ordered. In total, 174 A400M airlifters were ordered, with 84 already in service. Outside of the partner countries of the program, namely Belgium, France, Germany, Luxembourg, Spain, and Turkey that total 170 orders, the remaining four were acquired by Malaysia.

AeroTime has reached out to Airbus for comment but did not receive an answer at the time this article was published.

The A400M is a military transport aircraft designed by Airbus Defence and Space. It entered service in 2013, and is offered as a successor for older transporters such as the C-130 Hercules or the C-160 Transall. It recently achieved the certification flight test for the highly awaited simultaneous dispatch of paratroopers from both side doors. The feature had been delayed by the design shortcomings of static lines.

https://www.aerotime.aero/clement.charpentreau/24189-german-military-refuses-new-a400m-deliveries-over-safety-concerns

Sur le même sujet

  • Five F-35 issues have been downgraded, but they remain unsolved

    27 avril 2020 | International, Aérospatial

    Five F-35 issues have been downgraded, but they remain unsolved

    By: Aaron Mehta , Valerie Insinna , and David B. Larter WASHINGTON — The F-35 Joint Program Office has put in place stopgap fixes for five key technical flaws plaguing America's top-end fighter jet, but the problems have not been completely eliminated. Last June, Defense News reported exclusive details about 13 major technical issues, known as category 1 deficiencies, impacting the F-35. The JPO has since quietly downgraded five of those issues to the lesser category 2. A category 1 deficiency is defined as a shortfall that could cause death, severe injury or illness; could cause loss or damage to the aircraft or its equipment; critically restricts the operator's ability to be ready for combat; prevents the jet from performing well enough to accomplish primary or secondary missions; results in a work stoppage at the production line; or blocks mission-critical test points. In comparison, a category 2 deficiency is of lesser concern — something that requires monitoring, but not something that should impact operations. But downgrading the category doesn't mean the problems are solved, said Dan Grazier, who tracks military issues for the Project on Government Oversight. CAT 2 programs are still "definitely cause for concern. They are going to have an impact on how the aircraft performs,” Grazier said. "It really depends on what the issue is, but every design flaw has a potential issue on the mission. ... You want to not have flaws, you want these things can be fixed so pilots can get out and do what they need to do.” Aside from a few basic statements on which projects were downgraded to CAT 2, a JPO spokesperson said the office “cannot disclose any information about how these deficiencies were resolved or downgraded due to their security classification.” The ALIS sovereign data transfer solution does not meet information assurance requirements. The Autonomic Logistics Information System, or ALIS, provides the backbone of the F-35, used by the aircraft's operators in virtually all stages of flying and sustaining the Joint Strike Fighter. The system is used to plan and debrief missions, order spare parts, walk maintainers through repairs, and view technical data and work orders. (A potential replacement, named ODIN, is in the works.) But some international partners on the F-35 program have expressed concerns that data flowing through ALIS to the United States government — and to Lockheed Martin — could give both the U.S. military and the American defense contractor a window into that country's flight operations, including when and where its F-35s are flying. Those concerns were so high that two countries threatened to leave the program entirely if a fix was not quickly applied, according to the original documents viewed by Defense News. That fix is now in, according to the JPO, which said that on April 29, 2019, an update to ALIS included an initial version of a new Sovereign Data Management tool. “The SDM tool permits F-35 operators more control over the types of Prognostics and Health Management (PHM) data that are transferred to the F-35 Operations Center,” the JPO said. Incorrect inventory data for complex assemblies continues to result in grounding conditions. This particular deficiency involves supplies or components that, upon installation, are not actually listed and tracked in ALIS as designed. Those require specific, almost daily requests to software engineers to have data corrected in the system. While those requests can catch some problems, the issue is not always detected by the user. These “holes,” as the JPO calls them, do not collect data on how parts are used after installation, which means a part might be breaking down from heavy use. Yet, that part won't be flagged by ALIS as an at-risk piece. As a result, it's less likely that issues developing from wear and tear or a lack of replacement parts will be discovered until such an issue has become an acute problem, possibly leading to a grounding of the aircraft. The issue was downgraded to a CAT 2 deficiency on Jan. 13, 2020, “due to ALIS data quality improvements that have been made in the two years since this DR [deficiency report] was written,” according to the JPO. “The quality improvements have reduced the frequency and magnitude of issues that have impacted operational units' abilities to quickly release aircraft for flight following maintenance.” The F-35B and F-35C experienced incongruous lateral and longitudinal control response above a 20-degree angle of attack. One of the most eye-opening issues identified in the initial report was that the F-35B and F-35C models used by the Marine Corps and Navy become difficult to control when operating above a 20-degree angle of attack — which would be seen in the extreme maneuvers a pilot might use in a dogfight or while avoiding a missile. Pilots reported the aircraft experiencing unpredictable changes in pitch, as well as erratic yaw and rolling motions when coming in at that angle of attack.. “It has random oscillations, pitch and yaw issues above [its] 20-[degree angle of attack]," a longtime naval aviator told Defense News last year. "[So] if I had to perform the aircraft — if I had to maneuver to defeat a missile, maneuver to fight another aircraft, the plane could have issues moving. And if I turn around aggressively and get away from these guys and use the afterburner, [the horizontal tail and tail boom] start to melt or have issues.” The issue was important enough that it accounted for two CAT 1 issues, one each for the two variants impacted by the design issue. However, the JPO downgraded this issue to a CAT 2 on May 28, 2019, for the F-35C and on July 8, 2019, for the F-35B. The solution involves “improvements in flying qualities that were implemented in software. The improvements provide pilots with an intuitive reference indication for AOA [angle of attack], which allows pilots to more quickly optimize lateral maneuvering during air-to-air maneuvering. These software improvements have been released to all F-35 operators.” There were unanticipated thrust limits in jetborne flight on hot days. This particular issue only occurred once, but was so significant that it was identified in the original document as the “No. 1 priority” for the Marine Corps. The issue was identified aboard the amphibious assault ship Essex, where a Marine pilot performed what is known as a “mode four” operation. That is where the jet enters hover mode near a landing spot, slides over to a target area and then vertically lands onto the ship. It's a key capability for the "B" model, which was designed for its short-takeoff-and-vertical-landing abilities. The engine — working hard on a day that temperatures cracked 90 degrees Fahrenheit while trying to lift a plane that was heavier than most returning to base — wouldn't generate the needed thrust for a safe, ideal landing. The pilot managed to land, but the issue set off alarm bells in the Marine aviation community. The JPO initially expected a fix for this issue to be out sometime in 2019, but it wasn't until March 2020 that a mix of nondescript “software updates and procedural adjustments” brought the “propulsion system performance back to original specified performance levels.” https://www.defensenews.com/smr/hidden-troubles-f35/2020/04/24/five-f-35-issues-have-been-downgraded-but-they-remain-unsolved/

  • Le SCAF, un programme crucial pour la France

    16 juillet 2020 | International, Aérospatial

    Le SCAF, un programme crucial pour la France

    Safran et Dassault Aviation ont qualifié le programme du Système de combat aérien du futur (SCAF) de « projet existentiel », selon un rapport d'information du Sénat d'Hélène Conway-Mouret (PS) et de Ronan Le Gleut (Les Républicains) sur ce projet. « Le programme SCAF n'a sans doute pas tout à fait le même degré d'importance et d'urgence pour chacun des partenaires, notent pourtant les deux auteurs. Pour la France, le SCAF est existentiel à la fois pour Dassault et pour Safran, qui ne peuvent pas se permettre de rester sans projet d'avion de combat et de moteur d'avion de combat. Les industriels allemands (Airbus et MTU au premier chef) ou espagnols ne sont pas tout à fait dans la même situation : il s'agit plutôt pour eux de monter en compétence dans ces domaines ». Surtout, estime le rapport, si le développement d'un avion européen n'est pas lancé, « la France et l'Allemagne devront sans doute se doter d'une solution non souveraine en 2040, rappellent les deux sénateurs. La France renoncerait ainsi à son autonomie stratégique ». La Tribune du 15 juillet 2020 – Le Figaro du 15 juillet 2020

  • Oshkosh Defense, Partners Enter Concept Design Phase of U.S. Army’s OMFV Program

    26 juillet 2021 | International, Terrestre

    Oshkosh Defense, Partners Enter Concept Design Phase of U.S. Army’s OMFV Program

    Oshkosh Defense, Partners Enter Concept Design Phase of U.S. Army's OMFV Program

Toutes les nouvelles