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News18
4 hours ago
- News18
2 Boeing 787 Models Flagged Over Fittings: Why RAT, Which Prevents Air Crash, Can't Have Glitches
Last Updated: 'We issued guidance to our B787-9 and B787-10 customers in February 2025 and fully support the FAA's proposal to make that guidance mandatory," said Boeing The Federal Aviation Administration (FAA) has flagged a safety concern involving Boeing's 787 aircraft, saying operators of Boeing 787-9 and 787-10 models will have to adopt a new 'airworthiness directive (AD)". 'This proposed AD was prompted by reports of multiple supplier notices of escapement (NOEs) indicating that ram air turbine (RAT) forward fittings were possibly manufactured with an incorrect titanium alloy material," read a part of the summary of the document, the Financial Express reported. FAA's warning & Boeing response The reported added, 'The titanium material that was possibly used is a Grade 1 or 2 commercially pure unalloyed titanium, which has significantly reduced strength, fatigue and damage tolerance properties compared to the type design Grade 5 Ti-6Al-4V alloy material." According to a report by Aviation A2Z, the substandard titanium is believed to have been sourced from China and was supplied by Spirit AeroSystems, a key supplier to both Boeing and Airbus. The affected aircraft were assembled at Boeing's facility in North Charleston, South Carolina. The FAA further warned that using incorrect alloy material could lead to a failure of the Ram Air Turbine (RAT) during deployment. 'We issued guidance to our B787-9 and B787-10 customers in February 2025 and fully support the FAA's proposal to make that guidance mandatory," TOI attributed this statement to Boeing. How many Boeing 787-9 aircraft does Air India operate? According to a report by TOI, Air India currently operates Boeing 787-9 aircraft that were previously part of Vistara's fleet before the merger. Prior to the merger, Air India primarily operated the 787-8 variant of the Dreamliner, which may not fall under the scope of the FAA's latest directive and therefore might not require the same checks. Is it the same aircraft that crashed in Ahmedabad? No. The aircraft that crashed in Ahmedabad was a Boeing 787-8 Dreamliner. The RAT on this aircraft was deployed moments after it took off from Ahmedabad Airport on June 12, killing all but one passenger. What is RAT? A Ram Air Turbine (RAT) is a small, retractable, wind-powered turbine used as an emergency backup power source on modern aircraft, including the Boeing 787-9 and 787-10. It plays a critical safety role in ensuring that essential systems continue to function in the event of a complete or partial power failure. It is a propeller-driven turbine that deploys into the airstream outside the aircraft. As air flows through the turbine during flight, it spins and generates hydraulic or electrical power to operate vital systems. It is typically stored in a compartment (often in the fuselage or wing root), and automatically or manually deployed during emergencies. It uses the aircraft's forward motion (airflow) to generate energy. Provides emergency electrical power, and in some aircraft, hydraulic power. Why is the RAT key to aircraft functioning? The RAT is not used during normal operation. It becomes critical in emergency scenarios such as: 1. Loss of engine power 2. Loss of electrical generators 3. Loss of hydraulic systems (in some aircraft) In such cases, the RAT provides just enough power to keep essential systems running, such as flight control systems (fly-by-wire), instrumentation and displays, communication and navigation equipment and some hydraulic actuators (depending on design). Without the RAT, pilots could lose control of the aircraft due to the failure of fly-by-wire or hydraulic systems. What happens if the RAT malfunctions? A malfunctioning RAT can lead to severe consequences, especially if: Potential impacts of a RAT failure: Loss of control: On fly-by-wire aircraft like the Boeing 787, flight controls need power to function. Loss of critical avionics: Navigation, displays, radios may stop working. Emergency descent challenges: Pilots may not be able to manage cabin pressurization or communications effectively. Hydraulic failure (if applicable): Some flight surfaces may become inoperative. RAT in Boeing 787-9 and 787-10 The Boeing 787 family uses a highly electric architecture with electrically actuated flight controls (no traditional hydraulic flight controls). In the event of power loss, the RAT becomes the last-resort power source. Have there been any RAT related incidents? Air Transat Flight 236: Airbus A330 ran out of fuel over the Atlantic. RAT provided power for glide and safe landing. US Airways Flight 1549: After bird strike and dual engine loss, RAT powered vital controls for a successful ditching in the Hudson River. With Agency Inputs About the Author News Desk The News Desk is a team of passionate editors and writers who break and analyse the most important events unfolding in India and abroad. From live updates to exclusive reports to in-depth explainers, the Desk More Get Latest Updates on Movies, Breaking News On India, World, Live Cricket Scores, And Stock Market Updates. Also Download the News18 App to stay updated! view comments Location : New Delhi, India, India First Published: August 05, 2025, 13:27 IST News explainers 2 Boeing 787 Models Flagged Over Fittings: Why RAT, Which Prevents Air Crash, Can't Have Glitches Disclaimer: Comments reflect users' views, not News18's. Please keep discussions respectful and constructive. Abusive, defamatory, or illegal comments will be removed. News18 may disable any comment at its discretion. 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Fibre2Fashion
4 hours ago
- Fibre2Fashion
Cambodia expects to attract over 500 projects with reduced US tariff
Cambodia expects to attract over 500 investment projects, potentially generating over 300,000 jobs annually, with the United States recently reducing the reciprocal tariff rate on the country's exports from 49 per cent to 19 per cent. 'The new 19-per cent import duty allows Cambodian products to compete fairly with regional countries. It is also expected to attract more foreign direct investment (FDI), helping the Kingdom advance its economic growth ambitions,' Sun Chanthol, Deputy Prime Minister and first vice chairman of the Council for the Development of Cambodia (CDC), told a press conference. Cambodia expects to attract over 500 investment projects, potentially generating over 300,000 jobs annually, with the United States recently reducing the reciprocal tariff rate on the country's exports from 49 per cent to 19 per cent. Deputy Prime Minister Sun Chanthol urged all migrant workers to return home and contribute to national economic development. He urged all migrant workers to return home and contribute to national economic development. Working abroad offers limited benefit to Cambodia's economy, while domestic employment plays a vital role in driving growth, reducing poverty and strengthening the Kingdom's long-term development trajectory, he was cited as saying by domestic media outlets. The US decision followed phone calls between Prime Minister Hun Manet and President Donald Trump on July 26 and 28, during which he requested tariff relief to improve the living standards of the Cambodian people. Fibre2Fashion News Desk (DS)
Time of India
4 hours ago
- Time of India
Boeing 787 RAT fittings under scrutiny over titanium alloy concerns
Advt Advt FAA flags faulty alloy in RAT in 2 Boeing models Operators of Boeing 787-9 and B787-10 models will have to check their ram air turbine ( RAT ) forward fittings after the US Federal Aviation Administration (FAA) proposed this to "address the unsafe condition" following reports indicating the same "were possibly manufactured with an incorrect titanium alloy material".The erstwhile Vistara has seven Boeing 787-9 aircraft in its fleet that are now flying for Air condition, "if not addressed, could result in loss of backup hydraulic and/or electrical power as well as the RAT module departing (snapping off) from the airplane," the FAA is a device on an aircraft used to provide emergency backup power by deploying into the airstream when needed, like in case of dual engine RAT deployed on AI 171, which crashed in Ahmedabad seconds after take-off on June pre-merger Air India uses B787-8 variants of Dreamliners (one of which crashed in Ahmedabad) and may not be required to undergo this check."We issued guidance to our B787-9 and B787-10 customers in Feb 2025 and fully support the FAA's proposal to make that guidance mandatory.""The in-service fleet can continue normal operations," Boeing said in a statement to TOI on FAA said: "The titanium material that was possibly used is a Grade 1 or 2 commercially pure unalloyed titanium, which has significantly reduced strength, fatigue and damage tolerance properties...""A RAT forward fitting that was possibly manufactured with the incorrect titanium alloy material could fail when the RAT is deployed.""The FAA is issuing this 'notice of proposed rule-making' after determining that the unsafe condition described previously is likely to exist or develop on other products of the same type design," it check requires "a high frequency eddy current or handheld X-ray fluorescence spectrometer inspection of the RAT forward fitting to determine the titanium alloy material".Operators of Boeing 787-9 and B787-10 models will have to check their ram air turbine (RAT) forward fittings after US aviation regulator FAA said these were "possibly manufactured with an incorrect titanium alloy material" and "could fail when RAT is deployed". RAT is used to provide emergency backup power. RAT was deployed on AI 171 (Boeing 787-8), which crashed on June 12.
