Comparing the Power of IAE V2500 and CFM56 Engines

Etihad Advises Caution and Orders Inspection of Fuel Control Switches on Boeing 787s Heightened Vigilance Following Air India Crash Investigation Etihad Airways, based in Abu Dhabi, has issued a directive urging its pilots to exercise increased caution when operating the fuel control switches on its Boeing 787 fleet. This advisory accompanies an order for a thorough inspection of the locking mechanisms associated with these switches. The airline’s measures come amid ongoing investigations into the June 12 crash of an Air India Boeing 787-8, which, while not yet identifying any definitive technical faults, have brought renewed scrutiny to the operation of these critical cockpit controls. In a bulletin dated July 12, Etihad instructed its flight crews to remain vigilant when handling the fuel control switches or any nearby controls. Pilots were also advised to ensure that no objects are left on the pedestal that could inadvertently cause the switches to move and to promptly report any irregularities encountered during flight operations. The airline emphasized that these precautions are being implemented “out of an abundance of caution” as the official safety investigation involving another Boeing 787 operator remains unresolved. Regulatory Context and Industry Response Etihad’s directive follows a recent communication from the U.S. Federal Aviation Administration (FAA) to global aviation authorities, which reiterated a 2018 advisory concerning the disengagement of fuel control switch locks. This reminder was prompted by preliminary findings from Indian investigators examining the Air India crash, although no conclusive cause has yet been established. Despite the heightened attention, both the FAA and Boeing have reaffirmed the safety and regulatory compliance of the fuel control switch locking mechanisms. Nevertheless, the exact circumstances that led to the movement of these switches during the Air India incident remain unclear, prompting continued scrutiny from airlines, regulators, and industry stakeholders. Technical Inspections and Industry Implications In a separate technical bulletin, Etihad has directed its engineering teams to perform detailed inspections of the fuel control switch locking features across its Boeing 787 aircraft. The procedures outlined include verifying the proper engagement of the locks and, where necessary, replacing the thrust control module housing the switches. As the investigation into the Air India crash proceeds without definitive conclusions, Etihad’s proactive approach exemplifies the broader aviation industry’s cautious stance. The situation continues to be closely monitored by regulatory bodies and competitors alike, with potential ramifications for Boeing and its airline customers should any new safety concerns arise.

Air India Replaced Throttle Control Module Twice on Crashed Boeing 787, Investigation Reveals Background and Investigation Focus Air India replaced the Throttle Control Module (TCM) of its Boeing 787-8 Dreamliner twice within the last six years, following a 2019 directive issued by Boeing, according to sources involved in the ongoing investigation of the June 12, 2025, crash near Ahmedabad. The aircraft, registered VT-ANB and bound for London, has come under intense scrutiny as authorities seek to determine the cause of the fatal accident, with particular attention on the reliability of the Dreamliner’s systems, especially the TCM. The TCM, which incorporates the aircraft’s fuel control switches, has emerged as a central element in the probe after investigators discovered that these switches were disengaged immediately after takeoff. The preliminary report released by the Aircraft Accident Investigation Bureau (AAIB) on Saturday confirmed that the TCM was replaced on the aircraft in both 2019 and 2023. However, the report clarified that these replacements were not related to any faults with the fuel control switches. Maintenance Directives and Regulatory Context In 2019, Boeing issued a revised Maintenance Planning Document (MPD) mandating that all Dreamliner operators replace the TCM every 24,000 flight hours. Air India complied with this directive, replacing the TCM on VT-ANB twice since the MPD was issued. Specific details of the MPD have not been publicly disclosed, and Air India has not responded to inquiries regarding the replacements. The crash has prompted the Indian government to initiate an urgent inspection of all Boeing 787 aircraft operating within the country. This incident poses significant challenges for both Air India and Boeing as they strive to restore public confidence and address any potential technical vulnerabilities. Market analysts and investors are closely monitoring the situation for possible financial implications, while competitors in the aviation sector evaluate the broader impact on the industry. A Boeing spokesperson reiterated the company’s commitment to supporting the investigation and Air India, stating, “We will defer to the AAIB to provide information about AI171, in adherence with the UN International Civil Aviation Organization protocol known as Annex 13.” Findings and Ongoing Analysis The AAIB report noted that, at this stage, no immediate safety actions are recommended for operators of the B787-8 or the GE GEnx-1B engines, which powered the VT-ANB. The report also referenced a Special Airworthiness Information Bulletin (SAIB) issued by the US Federal Aviation Administration (FAA) in December 2018, which highlighted a potential issue with the disengagement of the fuel control switch locking feature on certain Boeing models. However, the FAA did not classify this as an unsafe condition requiring a mandatory directive. Air India confirmed that it did not perform the inspections recommended in the SAIB, as it was advisory in nature. Maintenance records reviewed by investigators revealed no reported defects related to the fuel control switch since 2023. The AAIB emphasized that the reasons for the TCM replacements were unrelated to the fuel control switches. As the investigation continues, analysis of the aircraft’s black boxes is expected to yield critical insights into the role of the TCM and other systems in the crash. These findings are likely to influence future safety protocols and industry practices.

NASA's X-59 Jet Aims for Quiet Supersonic Flight at Mach 1.4 Advancing Quieter Supersonic Technology NASA’s X-59 experimental jet has reached a significant milestone by achieving speeds of Mach 1.4, marking a notable advancement in the pursuit of quieter supersonic flight. Developed under NASA’s Quesst mission, the X-59 is designed to drastically reduce the loud sonic boom traditionally associated with breaking the sound barrier. This innovation holds the potential to transform commercial aviation by enabling faster travel without the disruptive noise that has long limited supersonic flights over land. Recent test flights of the X-59 have demonstrated promising progress toward this goal. By minimizing the noise footprint, NASA aims to overcome one of the primary obstacles that have prevented the widespread adoption of supersonic passenger flights since the 1970s. The success of these tests could signal a new chapter in aviation, where supersonic travel becomes both practical and community-friendly. Regulatory and Market Challenges Despite the technological strides, significant challenges remain before the X-59 can enter commercial service. The U.S. Federal Aviation Administration (FAA) has enforced a ban on supersonic flight over land since 1973 due to concerns about noise pollution. For NASA’s quiet boom technology to gain regulatory approval, it must provide compelling evidence that the X-59 operates within acceptable noise limits. Navigating these regulatory hurdles will be essential for the future viability of supersonic travel. If NASA’s efforts prove successful, the market response is expected to be favorable. A quieter supersonic jet could reignite interest in high-speed air travel, enabling new, lucrative routes and substantially reducing transcontinental flight times. The aerospace sector is closely monitoring these developments, especially as international competitors such as China’s Comac pursue their own supersonic projects with designs aimed at further reducing sonic disturbances. Strategic Implications for Aerospace Innovation NASA’s work on the X-59 also reflects a broader strategic shift toward revolutionary propulsion technologies for commercial aviation. This pivot comes amid tightening budget constraints, underscoring the urgency for NASA to sustain its leadership in aerospace innovation. The advancements embodied by the X-59 represent a critical moment in aerospace engineering, with the potential to usher in a new era of efficient, quiet, and commercially viable supersonic flight—provided that both technical and regulatory challenges can be successfully addressed.

Flying Taxis Take Flight in China, Realizing Long-Standing Science Fiction Visions For decades, cinematic portrayals in films such as *The Fifth Element*, *Blade Runner*, and *Back to the Future* have captivated audiences with futuristic images of flying cars navigating urban skylines. This once speculative vision is now approaching reality as China initiates its first autonomous flying taxi test flights, marking a pivotal advancement in the field of urban air mobility. Breakthrough in Urban Air Mobility This milestone has been achieved through a collaboration between the Chinese government and technology firm EHang, which recently showcased successful public demonstrations of its EH216 electric vertical takeoff and landing (eVTOL) vehicles. These drone-like taxis are designed to carry a single passenger along with a suitcase, reaching speeds of up to 81 miles per hour and covering distances of approximately 35 kilometers, equating to around 21 minutes of flight time. The fully electric vehicles recharge within two hours and employ 16 propellers to ensure stability and safety during operation. Video footage of the test flights rapidly circulated on social media platforms, providing viewers with a firsthand look at the smooth takeoffs and landings, as well as sweeping aerial views of the cityscape. Although these vehicles differ from traditional automobiles, their resemblance to large drones highlights the significant technological progress being made. On April 6, EHang announced that it had secured official certification for the EH216 model from the Civil Aviation Administration of China, a critical regulatory approval that paves the way for commercial deployment. However, the company has yet to disclose a definitive timeline for full-scale service or identify the initial cities slated for rollout. Challenges and Market Outlook Despite the enthusiasm surrounding this development, several challenges remain before flying taxis can become a widespread mode of transportation. Regulatory frameworks governing urban air mobility are still in the process of formation, and safety concerns continue to be paramount for both regulators and the public. Additionally, technological hurdles such as battery endurance and the management of increasingly complex air traffic must be overcome to ensure the viability of these services. Market responses have been measured but optimistic. Investors recognize the substantial growth potential in this sector, with forecasts suggesting that the global flying taxi market could reach a valuation of $14.5 billion by 2034. In response, competitors are intensifying their research and development efforts or seeking strategic partnerships to remain competitive amid rapid industry advancements. As China asserts itself as a leader in this nascent industry, the advent of flying taxis moves beyond the realm of science fiction. While obstacles persist, the successful test flights herald a transformative era in urban transportation, one that may fundamentally alter how people navigate cities and reshape urban skylines for future generations.

FAA Interim Report Finds No Immediate Safety Issues with Boeing 787-8 in Air India Crash The U.S. Federal Aviation Administration (FAA) has communicated to international aviation authorities that its interim review of the Air India Boeing 787-8 crash on June 12 revealed no immediate safety concerns related to the aircraft’s engines or systems. This update, issued on July 11, corroborates preliminary findings from India’s Aircraft Accident Investigation Bureau (AAIB), which is leading the ongoing investigation. Details of the Incident and Investigation According to a senior official from India’s Ministry of Civil Aviation, the FAA’s notification acknowledged the AAIB’s interim report, which identified that the fuel supply switches to both engines moved to the ‘CUTOFF’ position just three seconds after takeoff. This action caused a loss of engine thrust and the subsequent shutdown of both engines, ultimately resulting in the crash. The FAA also referenced its December 2018 advisory, which highlighted the potential for the locking mechanism on the fuel supply switches to become disengaged. Despite this, the U.S. regulator did not issue any new safety recommendations, instead reaffirming its previous guidance and committing to ongoing information sharing as the investigation progresses. The fuel switches involved are equipped with protective brackets and a spring-loaded locking mechanism designed to prevent accidental activation. Pilots must perform a deliberate two-step action—lifting the switch over a metal stop before pulling it down—to move it from RUN to CUTOFF. The FAA’s earlier Special Airworthiness Information Bulletin (SAIB) had advised airlines to inspect and, if necessary, replace switches with enhanced locking features. However, this guidance was advisory rather than mandatory. The AAIB report noted that Air India had not implemented the FAA’s 2018 recommendations, explaining that the bulletin was not compulsory. Furthermore, no defects in the fuel control switch had been reported since 2023, when the throttle control module was last replaced on the aircraft involved. Broader Implications and Market Response Globally, 77 airlines operate the Boeing 787, with 171 aircraft registered in the United States and 1,189 worldwide. Despite the crash, both the FAA and India’s Directorate General of Civil Aviation have found no significant safety concerns with the Boeing 787-8 fleet. Market reaction to the incident has been relatively subdued. Boeing’s stock price has remained stable, with analysts maintaining a new street-high price target. In response to the crash, Boeing has chosen to adopt a lower-profile presence at the upcoming Paris Air Show. Nevertheless, traveler confidence remains fragile. A recent survey by Skift indicates that a majority of Indian travelers have avoided certain airlines or routes due to safety concerns, highlighting the ongoing sensitivity surrounding aviation safety in the region. While the investigation continues, regulators emphasize that current evidence does not indicate an immediate risk associated with the Boeing 787-8, and no new mandatory safety directives have been issued.

Nigeria's Aviation Reforms Show Early Progress Amid Ongoing Challenges The Nigerian Civil Aviation Authority (NCAA) has reported encouraging early results from recent government-led reforms aimed at modernizing the country’s aviation sector. Speaking at a weekend retreat in Uyo themed “Achieving Operational Excellence in Air Transport Regulation for Safety and Economic Sustainability,” Olayinka Babaoye-Iriobe, Director of the Directorate of Air Transport Regulation (DATR), outlined key developments that signal progress in regulatory and operational frameworks. Key Policy Changes and Their Impact Central to the reforms is the introduction of a new aircraft leasing policy alongside the implementation of the Irrevocable De-registration and Export Request Authorization (IDERA). These initiatives, driven by the Ministry of Aviation and Aerospace Development, have markedly improved Nigeria’s position on the Cape Town Convention (CTC) index. Previously languishing below 49%, Nigeria’s low ranking had hindered local airlines’ access to leasing companies and contributed to elevated leasing costs. Babaoye-Iriobe emphasized the transformative effect of IDERA on the sector, noting that the improved CTC index has made Nigeria a more attractive destination for leasing companies. This shift has led to a reduction in aircraft leasing costs, which is expected to lower flight cancellations and bolster confidence in the aviation subsector. “When the index was at 49%, airlines faced high leasing rates that impacted fares. Now, with the implementation of IDERA, the cost of leasing aircraft has dropped significantly,” she explained. In addition to leasing reforms, the NCAA has enhanced the ease of doing business by launching an electronic portal for economic authorizations. This digital platform enables airlines to apply for licenses and renewals online, eliminating the need for physical visits to NCAA offices. Babaoye-Iriobe highlighted that once requirements are met, applications and payments can be completed digitally, streamlining regulatory processes and improving efficiency. The authority also conducts routine economic and financial audits to ensure airlines maintain financial viability and operational safety. These audits help identify and address weaknesses, contributing to the sector’s sustainability. Persistent Challenges and Tax Reform Efforts Despite these positive developments, significant challenges remain. A recent report by the African Airlines Association revealed that air fare taxes in Nigeria are among the highest in Africa, exceeding those in most other countries by a factor of three. This elevated tax burden risks suppressing consumer demand and undermining the sector’s competitiveness, even as regulatory reforms take hold. In response, the Nigerian government has enacted a tax reform law, signed by President Bola Tinubu, aimed at restructuring the aviation tax framework. While these reforms seek to modernize the sector and attract investment, the full impact on market dynamics and competitor responses is yet to be seen. As Nigeria’s aviation industry continues to evolve, stakeholders remain attentive to how these regulatory improvements and the ongoing challenge of high air fare taxes will influence the sector’s future growth and competitive positioning.

Aviation Expert Sanat Kaul Questions AI 171 Crash Report, Urges Pilot Involvement in Investigation Concerns Over Preliminary Report and Investigation Transparency Aviation expert Sanat Kaul has expressed serious reservations regarding the preliminary investigation report into the Air India AI 171 crash, which tragically claimed 241 lives. Kaul emphasized the necessity for greater transparency and the inclusion of experienced pilots in the investigative process. The preliminary report, released by the Ministry of Civil Aviation, was notably unsigned, a detail Kaul criticized, stating, “It should have been signed. But I don't think the report is ok. We should wait for the final report, and the final report may not align with the preliminary report; there can be several changes.” Kaul highlighted the importance of adhering to the International Civil Aviation Organisation’s (ICAO) guidelines, which recommend the involvement of pilots familiar with the aircraft involved—in this case, the Boeing 787. He insisted that if a pilot with Boeing 787 experience is unavailable, at minimum, someone with Boeing 737 expertise should be included. This stance reflects broader concerns raised by the Federation of Indian Pilots and the Airline Pilots' Association of India, both of which have questioned the composition of the investigation team. These associations argue that the absence of qualified and experienced pilots undermines the credibility of the inquiry and have criticized the premature leak of the unsigned preliminary report to the media. They further warned that the investigation appears predisposed to attributing the crash to pilot error without sufficient evidence. Composition of the Investigation Committee and Wider Implications The Ministry of Civil Aviation has defended the investigation, asserting that it is being conducted in strict accordance with ICAO Annex 13 and the Aircraft (Investigation of Accidents and Incidents) Rules, 2017. The multi-disciplinary committee, chaired by the Union Home Secretary, includes senior officials from the Ministry of Civil Aviation, the Home Ministry, Gujarat’s State Disaster Response Authority, the Indian Air Force, and the Bureau of Civil Aviation Security. Despite this broad representation, critics maintain that the absence of active pilots on the panel may hinder a thorough evaluation of operational procedures and human factors critical to understanding the crash. Beyond the investigation itself, the AI 171 crash has had significant repercussions across the aviation sector. Insurance companies and aviation insurers are closely monitoring the situation, while competitors have initiated internal reviews of Boeing’s Dreamliner model and their own safety protocols. Additionally, families of the victims have accused Air India of applying pressure during compensation negotiations, further complicating the aftermath of the tragedy. Kaul and pilot associations continue to advocate for the inclusion of pilots in the investigation, arguing that their expertise is vital for a comprehensive and impartial inquiry. They contend that pilot involvement would provide essential insights into operational and human factors, which could contribute to restoring public confidence and enhancing aviation safety standards.

Will Delta Eventually Order Boeing 787 Dreamliners? Speculation is growing within the aviation industry regarding whether Delta Air Lines will place an order for Boeing 787 Dreamliners, particularly the largest -10 variant. Although no official announcement has been made, industry analysts and frequent commentators have identified indicators suggesting that Delta may be approaching an agreement with Boeing. Such a move would represent a notable shift in the airline’s widebody fleet strategy. Current Fleet Composition and Renewal Strategy Delta’s recent long-haul fleet renewal efforts have predominantly focused on Airbus aircraft. The airline currently operates 38 Airbus A350-900s, with an additional six on order, and has committed to acquiring 20 A350-1000s. These aircraft serve as the cornerstone of Delta’s transpacific and ultra-long-haul operations. For transatlantic routes, Delta relies on 36 Airbus A330-900neos, supplemented by three more jets on order. Despite these modern additions, Delta continues to operate a significant number of older widebody aircraft. This includes 42 Airbus A330ceos—comprising 11 A330-200s and 31 A330-300s—with an average age between 16 and 20 years. The airline also maintains a fleet of 60 Boeing 767s, split between 39 767-300ERs and 21 767-400ERs, which average 25 to 30 years in service. The 767-300ERs, in particular, are expected to be retired from international routes by the end of the decade, underscoring the need for replacement aircraft. The Boeing 787-10: Suitability and Challenges The Boeing 787-10, the largest variant of the Dreamliner family, offers compelling per-seat economics and is well-suited for transatlantic and South American routes. However, its shorter range compared to other Dreamliner models may limit its deployment on some of Delta’s longest-haul flights. An order for the 787-10 would not only diversify Delta’s widebody fleet but also signal a potential renewal of its partnership with Boeing. Nevertheless, several challenges remain. The Dreamliner program has encountered production delays and quality control issues in recent years, raising concerns about operational reliability and customer satisfaction. These ongoing issues could influence Delta’s decision-making process, given the airline’s strong emphasis on operational consistency. Market Implications and Competitive Pressures Market reactions to a potential Delta order for the 787-10 are likely to be mixed. Some investors and industry analysts may interpret such a move as a positive indicator of Boeing’s recovery and the broader widebody aircraft market, especially in light of Boeing’s projections for strong future demand. Conversely, others may remain cautious due to the Dreamliner’s recent production challenges. Meanwhile, competitors such as American Airlines have been expanding their Dreamliner fleets, which could exert pressure on Delta to act in order to maintain competitiveness in the long-haul segment. Ultimately, Delta’s decision will depend on a combination of operational requirements, financial considerations, and confidence in Boeing’s ability to deliver reliable aircraft. While the airline has favored Airbus in recent fleet renewals, the imperative to replace aging 767s and preserve flexibility in its international network may make a Boeing 787 order increasingly probable in the coming years.

Delta CEO Details Rationale Behind Dismantling New Aircraft Delta Air Lines has announced a surprising strategic decision to dismantle several newly acquired aircraft, a move driven by persistent supply chain disruptions that continue to affect the global aerospace industry. CEO Ed Bastian outlined the rationale behind this unconventional approach, emphasizing the operational challenges posed by ongoing delays in parts and maintenance. Navigating Supply Chain Challenges and Operational Realities Bastian explained that the airline is confronting unprecedented difficulties in sourcing components necessary to keep new planes operational. Rather than allowing these aircraft to remain grounded and unused, Delta has opted to dismantle them to harvest parts that will support its existing fleet. This strategy aims to enhance operational reliability amid a landscape marked by production delays and escalating costs that have burdened airlines since the onset of the pandemic. The decision reflects broader industry pressures, as aerospace leaders warn that supply chain bottlenecks may persist well into the coming year. Airlines are thus compelled to make difficult choices regarding fleet management, balancing the need to maintain service levels with the realities of constrained resources. Delta’s move also responds to evolving market dynamics, including fluctuating passenger demand and intensifying competition. Market and Competitive Implications Reactions to Delta’s announcement have been varied. Some passengers have expressed concern that the reduction in available aircraft could lead to fewer main cabin seats, potentially driving up fares or limiting flight options. Conversely, others view the decision as a pragmatic adaptation to current industry conditions. There is speculation that some travelers might turn to low-cost carriers such as Spirit Airlines, which has positioned itself as an alternative in the competitive landscape. Competitors are closely monitoring Delta’s strategy, particularly in key international markets. Both Delta and United Airlines have experienced operational disruptions on routes to Israel, prompting analysts to suggest that rival carriers may seek to exploit any vulnerabilities by expanding capacity or targeting premium customer segments. Despite these operational challenges, Delta’s financial performance remains robust. The airline recently reported quarterly revenues that exceeded Wall Street expectations, underscoring its resilience amid sector-wide headwinds. Bastian reaffirmed the company’s commitment to long-term stability and customer service, stating, “Our priority is to deliver a reliable product for our customers, even if it means making difficult choices in the short term.” Delta’s decision to dismantle new aircraft highlights the complex strategic balancing act facing major airlines as they navigate supply chain constraints and shifting market conditions. It underscores the operational challenges and strategic flexibility required to maintain competitiveness in an evolving aviation environment.

Former AAIB Chief Urges Caution in Assessing Pilot’s Role in Air India Crash New Delhi, July 13 — It remains premature to draw definitive conclusions regarding the pilots’ involvement in last month’s tragic Air India flight 171 crash, according to Aurobindo Handa, former chief of the Aircraft Accident Investigation Bureau (AAIB). The fatal accident, which claimed 260 lives, is still under thorough investigation, and Handa stressed that only the final report will establish the most probable cause. Having led investigations into over 100 aircraft accidents, including the 2020 Air India Express crash in Kozhikode, Handa called for patience and restraint following the release of the AAIB’s preliminary findings. Speaking a day after the bureau published its initial report, he urged that the investigation be allowed to proceed in a fair, unbiased, and transparent manner. Preliminary Findings and Pilot Details The preliminary report disclosed that the fuel switches on the Boeing 787-8 involved in the crash were turned off within a second of each other and subsequently reactivated. Cockpit voice recordings captured an exchange between the two pilots, with one questioning the other about the fuel switch being cut off, and the second denying responsibility. The report did not clarify which pilot made each statement. On the ill-fated flight from Ahmedabad to London Gatwick, First Officer Clive Kundar, aged 32, was the Pilot Flying (PF), while Captain Sumeet Sabharwal, 56, served as Pilot In Command (PIC) and Pilot Monitoring (PM). Sabharwal had accumulated over 8,596 hours on the 787, including 8,260 hours as PIC, whereas Kundar had logged 1,128 hours on the aircraft. Both pilots reportedly had adequate rest prior to the flight. Handa cautioned against speculation, particularly in some foreign media outlets that have suggested pilot error. He appealed to experienced aviators and commentators to refrain from conjecture until the investigation is complete. Ongoing Investigation and Industry Implications The crash occurred shortly after takeoff when the aircraft struck a building, resulting in only one survivor among 242 occupants. The investigation is now focused on understanding why the fuel switches were manipulated and whether mechanical or electrical failures played a role. Handa emphasized that the forthcoming stages of the AAIB inquiry will be critical in elucidating these technical factors. The tragedy has intensified scrutiny of airline safety standards, especially amid recent incidents such as a technical malfunction on a Thai Lion Air flight, which have heightened concerns about operational reliability. The aviation industry faces mounting pressure to reinforce safety protocols and maintain public confidence. Airlines are expected to enhance communication and transparency in response to such events. Market reactions have mirrored investor apprehensions regarding safety, while competitors may seek to highlight their own safety measures to reassure passengers. As the investigation progresses, both industry stakeholders and the public await comprehensive findings to fully understand the causes behind the Air India crash.