Aerospace
FAA orders emergency inspections of 2,000 Boeing 737s engines
The Federal Aviation Administration on Friday issued an emergency Airworthiness Directive (AD) for 2,000 Boeing 737s that have been parked.
The FAA issued the directive after inspectors found compromised air check valves when bringing the aircraft out of storage, agency spokesman Lynn Lunsford said. Corrosion on the “fifth stage bleed air check valve” could result in dual-engine failure, he said.
Emergency Airworthiness Directive (AD) 2020-16-51 is sent to owners and operators of The
Boeing Company Model 737-300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series
airplanes.
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This emergency AD was prompted by four recent reports of single-engine shutdowns due to engine bleed air 5th stage check valves being stuck open. Corrosion of the engine bleed air 5th stage check valve internal parts during airplane storage may cause the valve to stick in the open position. If
this valve opens normally at takeoff power, it may become stuck in the open position during flight and fail to close when power is reduced at top of descent, resulting in an unrecoverable compressor stall and the inability to restart the engine. Corrosion of these valves on both engines could result in a dual-engine power loss without the ability to restart. This condition, if not addressed, could result in compressor stalls and dual-engine power loss without the ability to restart, which could result in a forced off-airport landing.
Inspections and Corrective Actions
(1) For any airplane that is in storage on or after the date of receipt of this AD, and any airplane that, as of the date of receipt of this AD, has been operated for 10 or fewer flight cycles since returning to service from the most recent period of storage: Before further flight, do the inspections
specified in paragraphs (h)(1)(i) and (ii) of this AD on the engine bleed air 5th stage check valve on each engine. If any engine bleed air 5
th stage check valve fails any inspection, replace that engine
bleed air 5th stage check valve before further flight. For each engine bleed air 5th stage check valve
that passes both inspections specified in paragraphs (h)(1)(i) and (ii) of this AD, do the actions 3 specified in paragraph (h)(2) of this AD on that engine bleed air 5th stage check valve before further
flight.
QANTAS FAREWELLS “QUEEN OF THE SKIES”
(i) Rotate the flapper plates by hand at least 3 times. If the flapper plate moves smoothly,
without signs of binding or sticking, from the fully closed position to the stop tube using gravity force
alone, the engine bleed air 5th stage check valve has passed this inspection.
(ii) Measure the clearance between the flapper bushings at both locations on each engine
bleed air 5th stage check valve. If the clearance between the flapper bushings is a minimum of 0.004 inch (0.102 mm) at both locations, the engine bleed air 5th stage check valve at that location has passed this inspection.
(2) For each engine bleed air 5th stage check valve that passes the inspections specified in paragraphs (h)(1)(i) and (ii) of this AD, do the inspections specified in paragraphs (h)(2)(i) through
(iii) of this AD before further flight on the engine bleed air 5th stage check valve on each engine. If any engine bleed air 5
th stage check valve fails any of the inspections specified in paragraphs (h)(2)(i) through (iii) of this AD, replace that engine bleed air 5
th stage check valve before further flight.
(i) Do a general visual inspection of the flapper bushings for signs of cracks, fractures, and
missing bushing heads. If the flapper bushings do not show any signs of cracks, fractures, or missing
bushing heads, the engine bleed air 5th stage check valve has passed this inspection. Signs of corrosion are not a cause for replacing the engine bleed air 5th stage check valve if the engine bleed air 5th stage check valve did not fail any of the inspections specified in paragraph (h)(1) of this AD.
(ii) Using only hand pressure, try to rotate the flapper bushings in the flapper plates. If the bushings do not rotate in the flapper plate, the engine bleed air 5th stage check valve has passed this inspection.
(iii) Do a general visual inspection of the check valve for signs of the flappers rubbing against the valve body. If the flappers do not show any signs of rubbing against the valve body, the engine
bleed air 5th stage check valve has passed this inspection.
(i) Minimum Equipment List Relief for Certain Airplanes
For airplanes that have operated 10 or fewer flight cycles since the most recent period of storage prior to receipt of this AD, as an alternative to compliance with paragraph (h): If allowed by
the operator’s FAA-approved Minimum Equipment List, the airplane may be dispatched with one engine’s engine bleed air high stage valve locked closed. Thereafter, within 5 additional flight cycles,
inspect the engine bleed air 5th stage check valve on both engines as required by paragraph (h) of this
AD.
Source : Airworthiness Directive
Aerospace
Boeing 777-8F vs Airbus A350F: Comparing two legend aircraft
In the world of aviation, competition is a constant force. With the aftermath of the COVID pandemic, many airlines have been making a strong comeback, showing robust profit margins. Furthermore, the demand for freight services has been on the rise, necessitating the need for high-end aircraft in this sector.
In this narrative journey, we’re about to embark on, we’ll delve into the realm of two exciting newcomers in the freighter aircraft segment: the Airbus A350 Freighter and the Boeing B777-8 Freighter.
These aircraft are born from the same lineage as their passenger counterparts but have been reimagined for the world of cargo transportation. Our exploration will take us through the fascinating similarities and differences between these two aircraft, examining their capacity, operational viability, and what they bring to the airlines that operate them.
Airbus A350F
The A350F can be seamlessly integrated into airline fleets, delivering step-change efficiency in terms of volume, range, and payload.
Airbus is proud to bring the A350F as the only choice for the future of the large widebody freighter market
The A350F, as proclaimed by Airbus, possessed an almost otherworldly ability: it showcased an unbeatable fuel efficiency that set a new benchmark for its competitors. With awe-inspiring prowess, it achieved a staggering 40% reduction in fuel consumption and carbon dioxide emissions when compared to the venerable 747F.
But the brilliance of the A350F didn’t end there. It was a revelation in seamless integration for airline fleets. As if answering the prayers of airlines worldwide, this aircraft seamlessly joined its ranks, ready to revolutionize air travel. Its introduction marked a step-change in aviation efficiency, touching every aspect of the industry.
Boeing’s 777x Aircraft and the Evolution of Air Freight
Boeing is keeping pace with advancements in aviation, showcasing its much-anticipated Boeing 777x aircraft, currently in the testing phase. Responding to Qatar Airways’ call, Boeing is exploring the development of a 777X-based freighter to replace the existing 777Fs.
This cutting-edge aircraft boasts next-generation avionics and technology, featuring a powerful engine that significantly elevates its performance. The extended wing structure not only enhances aerodynamics, reducing drag during cruising for improved fuel efficiency but also contributes to lower fuel consumption.
Introducing the 777-8 Freighter, Boeing extends its freighter family as the world’s most capable and fuel-efficient freighter, aligning with sustainability goals. The Boeing freighter family ensures optimal payload capacity and range capabilities, all while maintaining superior economics. This includes the high-volume 747-8 Freighter and the long-range 777 Freighter, solidifying Boeing’s commitment to delivering innovative solutions for the future of air freight.
Boeing 777-8F vs Airbus A350F – Specifications | ||
---|---|---|
A350F | 777-8F | |
Length | 70.8m | 70.8m |
Height | 17.1m | 19.5m |
Wingspan | 68.75m | 71.8m |
Maximum take-off weight (MTOW) | 319,000kg | TBC |
Cargo capacity main deck | 30 pallets main deck, 12 in lower hold | 30 pallets main deck, 12 in the lower hold |
Total cargo volume | TBC | 766.1m3 |
Net revenue payload | 109,000kg | 112,264kg |
Range | 4,700nm | 4,410nm |
Engines | 2x Rolls-Royce Trent XWB | 2x General Electric GE9X |
Boeing 777-8F and A350F Capacity
The A350F is derived from the A350-1000 and the 777-8F will have the key features of Boeing’s 777X design, including its carbon-fiber wing – the longest single composite part ever developed for an aircraft.
The 777-8F will be slightly larger than the A350F, with a marginally longer fuselage, taller height, and a wider wingspan. At 70.8m, the A350F will be slightly shorter than the 73.7 m-long passenger A350-1000.
On cargo payload and range, Airbus says the A350F will carry 109,000kg over 4,700nm. Boeing’s data notes the 777-8F will carry 112,300kg over 4,410nm.
And while the A350F’s main-deck cargo hold will have capacity for 30 pallets (measuring 244 x 318cm), with another 12 of the same size in the lower hold, the 777X will carry 31 pallets (again 244 x 318cm) on the main deck, and 13 in its lower hold. Essentially, the 777-8F will carry slightly more cargo, but the A350F will be able to fly further.
Boeing 777-8F and A350F efficency
Airbus stands to gain significant advantages by promptly introducing the A350F into service, recognizing the absence of a compelling cargo aircraft in its portfolio. Leveraging the already-established certification of the A350 family further reinforces its position.
In contrast, Boeing adopts a more measured approach, as the continued reception of orders for the 777F allows for sustained production over the next five years. This strategy provides a smoother transition toward the eventual production of the 777-8F.
The European aircraft manufacturer highlights that the A350 F will feature a 17% increase in revenue cargo volume and a payload capacity of 3,000kg greater than the current generation Boeing’s 777-9F.
In contrast, Boeing asserts that Boeing’s 777-9F will outperform the current Boeing 777F by carrying 17% more revenue payload. Boeing aims to provide the “highest payload and long-range capability” to explore new markets while ensuring a balance of “low operating cost with high reliability.”
Airbus emphasizes the A350 F unparalleled space for customers, claiming an 11% volume increase that accommodates an additional 5 pallets. The A350 F boasts a lighter Maximum Takeoff Weight of 30 tonnes and an impressive 99.5% operational reliability.
Further setting it apart, the Airbus A350 F features a cargo side door that surpasses competitors in size. Additionally, it promises a 20% reduction in fuel burn, contributing to enhanced efficiency and sustainability.
Airbus stands to gain significant advantages by promptly introducing the A350 F into service, recognizing the absence of a compelling cargo aircraft in its portfolio. Leveraging the already-established certification of the A350 family further reinforces its position.
In contrast, Boeing adopts a more measured approach, as the continued reception of orders for Boeing’s 777-9F allows for sustained production over the next five years. This strategy provides a smoother transition toward the eventual production of Boeing’s 777-9F.
B777-8F and A 350F orders as of Nov 2023
Currently, both freighter versions of these aircraft are pending. The Airbus A350, initially known for its passenger variant, is already operational in the market, catering efficiently to the passenger segment. Airbus is now extending its capabilities by developing the freighter version, scheduled for its maiden flight in 2026. Since its introduction in July 2021, Airbus has secured 39 firm orders for the A350F, with the unveiling of the inaugural aircraft’s livery at the Paris Air Show.
On the Boeing front, the 777-8F aircraft is undergoing a transition from the passenger to the freighter version. The cargo variant, 777-8F, is anticipated to be introduced in 2028. In contrast, the passenger version, 777-8, does not have a confirmed timeline. Qatar Airways, a major customer, has placed orders for approximately 74 aircraft, with additional orders from various other airlines, totaling around 90 aircraft as of 2023. Boeing currently leads in terms of order volume compared to Airbus.
Aerospace
Airbus Helicopters Pioneers Tablet-Controlled Autonomous Helicopter
Airbus Helicopters has successfully conducted initial flight tests of an innovative autonomous rotorcraft flight control system, capable of being operated entirely through a tablet computer.
This development mirrors Airbus’s previous demonstration of controlling the A350 aircraft from taxiing to takeoff and landing, extending the same technological application to helicopter control.
The Vertex project, a three-year initiative supported by Airbus‘ UpNext innovation arm and co-funded by France’s Civil Aviation Authority, has showcased fully autonomous helicopter flight, covering takeoff, cruise, approach, and landing phases.
Operating helicopters, which rely on complex head rotors, poses unique challenges compared to fixed-wing aircraft. Even minor pilot inputs can lead to significant errors and potential crashes.
The primary focus of these efforts is to enhance safety in light helicopter operations and pave the way for autonomous electric advanced air mobility systems.
Airbus Helicopters FlightLab H130
The flight tests were conducted using the Airbus Helicopters FlightLab H130 technology demonstrator aircraft. Airbus utilizes its labs to actively test and develop supporting technologies for the aviation industry’s future.
The autonomous system integrates a four-axis autopilot to provide a level of flight envelope protection, with the autopilot also managing the engines.
During the testing phase, the pilot monitored the system, which demonstrated the ability to detect unforeseen obstacles and automatically adjust the flight path for safety.
The pilot retained the option to override controls through the tablet interface when necessary and resume the mission. This comprehensive flight testing occurred from October 27th to November 22nd at the Airbus Helicopters facility in Marignane, France.
Aerospace
8 Facts about the IL-96-400 Aircraft, the Russian-Built Wide-Body Aircraft
Unlock the secrets of the Ilyushin Il-96-400, a testament to Russia’s prowess in crafting extraordinary long-range, wide-body passenger aircraft.
The Ilyushin Il-96-400, a flagship of Russian aerospace innovation, stands as a testament to the country’s prowess in designing and manufacturing long-range, wide-body passenger aircraft. Developed by the renowned Ilyushin Design Bureau, the Il-96-400 represents an extended variant within the Ilyushin il 96 400 family, marked by its distinctive features and capabilities that cater to the evolving demands of commercial aviation.
In this article we delve into the unique attributes of the Il-96-400, exploring its design elements, operational versatility, and the impact it has made on both commercial and specialized aviation sectors.
Discover 8 intriguing facts about the IL96-400, the wide-body aircraft proudly crafted in Russia:
Long-Haul Champion:
The IL96-400 boasts an impressive range, capable of flying up to 10,000 kilometers (6,200 miles). This makes it an ideal choice for transcontinental journeys, offering airlines a competitive alternative for international long-haul flights.
Versatile Transportation:
Designed for adaptability, the IL96-400 can seamlessly transition between passenger and freight transportation. Its multifunctionality caters to the diverse needs of airlines, making it a popular choice for both cargo operators and mixed-use scenarios.
Enhanced IL-96 Aircraft Family:
Developed as an extended variant within the IL-96 family, the IL96-400 features expanded passenger capacity, improved fuel efficiency, and enhanced performance to meet the demands of modern air travel.
Impressive Passenger Capacity:
With the capability to carry up to 402 passengers, the IL-96-400M, in development since February 2017, challenges industry giants like the Airbus A350 and Boeing 777 in Russia.
Maiden Flight Milestone:
On November 1st, 2023, the IL-96-400M prototype completed its first flight, marking a significant milestone in the aviation industry. The flight included altitudes up to 2000 meters, speeds reaching 390 km/h, and a duration of 26 minutes.
Powerful Propulsion:
Equipped with the PS-90A1 engines, the IL-96-400 is driven by potent and efficient engines, representing an upgrade from the engines used in its predecessors.
Innovative Inflight Experience:
The IL-96-400M’s passenger cabin offers a contemporary multimedia system, providing features such as internet access, television, satellite communications, and modern kitchen appliances. Configurable with one, two, or three classes, it ensures a comfortable and entertaining journey.
Heritage of Reliability:
In terms of reliability and flight safety, the IL-96-400M continues the legacy of its renowned predecessors, the Il-86 and Il-96 aircraft. Its redundant systems and aerodynamic configuration align it with the highest standards of global aviation models.
Aerospace
US FAA clears Boeing flight tests for 737 MAX 10 certification
The FAA recently granted type inspection authorization for the 737 Max 10, a crucial step that enables FAA pilots to participate in the necessary flight testing for the aircraft’s certification for regular operations. In a letter to employees, three Boeing executives highlighted this milestone as a significant step forward.
This development comes as a pivotal moment for Boeing, following the global grounding of the 737 Max series. The long-awaited type inspection authorization (TIA) for the 737-10 signals the commencement of formal FAA certification flight testing, representing a substantial achievement in Boeing’s progress since the 737 Max’s return to service.
Boeing 737 Max competing with A321
The Boeing 737 Max 10 is an enhanced version of the 737 Max family, capable of accommodating more passengers and offering an extended range in the aircraft segment. Positioned as a direct competitor to the European-built Airbus A321, the 737 Max 10 boasts the latest avionics, engines, and framework.
The history of the Boeing 737 Max has been marked by intense scrutiny, primarily due to two fatal crashes in 2018 and 2019. These incidents prompted regulatory bodies worldwide, including the Federal Aviation Administration (FAA), to mandate comprehensive changes and improvements to the 737 Max series before it could resume operations.
Boeing responded by implementing software updates and modifications to address the identified issues, accompanied by enhanced pilot training programs.
Significant step closer to the global entry of the 737-10 into passenger service.
Despite facing significant market backlash and revenue losses, Boeing has diligently worked on the recertification of the 737 Max series. While some variants received certification in early 2021, the latest addition, the Boeing 737 Max 10, was temporarily on hold.
The recent certification marks a significant achievement, as expressed in the statement by Boeing’s senior executives, signaling a step closer to having the 737-10 enter passenger service globally.
The Federal Aviation Administration (FAA) has granted approval for Boeing (NYSE: BA) to initiate flight tests for its 737 MAX 10, the company’s largest aircraft. This authorization represents a key milestone in the progression of the aircraft’s testing and certification process.
Aerospace
Indian Rafale fighter jets hunt for ‘UFO’ sighted near Imphal airport
On Sunday, the Indian Air Force was informed about the observation of unidentified aerial objects in the area of the Imphal airport.
In a moment, the Indian Air Force sent its Rafale combat aircraft out to find them. A few commercial flights were hampered when the UFO was spotted over Imphal airport at 2:30 p.m. “Soon after information about the UFO near the Imphal airport was received, a Rafale fighter aircraft from a nearby airbase was scrambled to go and search for the UFO,” said defense department officials.
“One more Rafale fighter was sent for the search after the first aircraft returned, but the UFO was not seen around the area,” they claimed. “The aircraft equipped with advanced sensors carried out low-level flying over the suspected area to look for the UFO but it did not find anything there,” they reported.
They claim that videos show the UFO over the Imphal airport, and the concerned organizations are investigating the sighting.
After Imphal airport was cleared for regular operations, the Indian Air Force’s Eastern Command, which has its headquarters in Shillong, announced the activation of its Air Defence response mechanism. However, the specifics of the actions taken were kept under wraps.
On ‘X,’ the Eastern Command declared that “IAF activated its Air Defence response mechanism based on visual inputs from Imphal airport.” Twitter was the source of the announcement. Thereafter, the small object was not observed.”
Aerospace
Why FedEx is seeking approval for an anti-missile system on its cargo planes
FedEx plans to equip some of its cargo planes with laser technology to keep off incoming heat-seeking missiles.
The action was taken in response to a threat regarding the aircraft’s heat tracking. An Airbus A330 belonging to DHL was struck by a surface-to-air missile in 2003 shortly after it took off from Baghdad. The crew made a safe return to the airport. “In recent years, in several incidents abroad, civilian aircraft were fired upon by man-portable air defense systems (MANPADS),” stated the document from the FAA.
The proposal also addresses possible safety issues because infrared laser radiation may pose a risk to individuals inside the aircraft, outside of it, or in another aircraft. Furthermore, infrared laser energy is undetectable to the human eye, which raises risks.
In response to the concerns raised, the FAA issued a list of requirements, one of which was that the design must prevent “inadvertent operation of the system” while the aircraft is on the ground, including during maintenance.
In addition, a lot of businesses have created and designed systems that can be modified to use a laser-based missile defense system that can deflect heat-seeking missiles by aiming infrared energy in their direction in an attempt to stop the missile from tracking the aircraft’s heat.
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