The Federation of Indian Pilots (FIP) has written to the Aircraft Accident Investigation Bureau (AAIB), flagging discrepancies in the preliminary report on the Air India Flight AI171 crash. Highlighting that the deployment of the Ram Air Turbine (RAT) may not be linked to the fuel interruption and raising doubts on the timeline, the FIP has called for fresh simulator tests to verify the sequence of events. The issue has drawn attention to a little-known aircraft safety system, which may provide investigators with clues on what led to the deadly crash that claimed the lives of 260 people onboard and on the ground, leaving just one surviving passenger.<h2>What is a Ram Air Turbine (RAT)?</h2>A Ram Air Turbine (RAT) is an emergency backup power system installed on several commercial aircraft, including the Boeing 787 Dreamliner, which was involved in the crash in Ahmedabad last year. The RAT, which is a small wind-driven turbine, is connected to a hydraulic pump or an electric generator. It is deployed automatically if a plane experiences a major loss of electrical power, hydraulic power, or engine-generated power.Once deployed, the RAT can provide enough power to operate critical flight controls, instruments, communication systems and other essential functions needed for pilots to maintain control of the aircraft and attempt a landing.<h2>When is RAT deployed?</h2>RAT can be deployed automatically if both engines of an aircraft suffer a failure. It can also be deployed in case of a complete loss of power or if severe hydraulic failures are detected. The RAT can also be deployed manually by the pilots in case of an emergency.Also read | <a href="https://www.wionews.com/india-news/pilots-body-flags-gaps-in-air-india-crash-report-calls-for-fresh-probe-to-verify-timeline-rat-deployment-1781497145925">Pilots’ body flags gaps in Air India crash report, calls for fresh probe to verify timeline, RAT deployment</a>As RAT is linked to major failures of an aircraft, its deployment on flight AI171 may give investigators crucial clues on the sequence of events that led to the deadly crash.<h2>What are the doubts raised by pilots’ bodies?</h2>The pilots’ body raised concerns about whether Boeing 787 simulator results align with the timeline outlined in the AAIB’s preliminary findings, which stated that the aircraft’s emergency RAT was deployed after the fuel control switch movement. The FIB suggested that the RAT deployment may have occurred due to an electrical fault or other existing issue, adding that it may have deployed before the fuel switch movement.The FIP also cited flight simulator data indicating that the RAT typically begins generating power roughly 18 seconds after a fuel interruption. On this basis, it argued that the RAT deployment might not be directly linked to fuel switch movement.“While the report indicates RAT power generation approximately 4-5 seconds after fuel interruption, simulator testing reportedly indicates approximately 18 seconds. The letter therefore suggests that RAT deployment may have occurred before fuel control switch movement and may indicate an earlier system or electrical fault requiring further investigation,” the letter read.Referring to CCTV footage from Ahmedabad airport, the letter noted that the RAT appeared to already be deployed while the aircraft was still on the runway before rotation. This, it said, further strengthens the possibility of an earlier system anomaly rather than a fuel-control-triggered event.The letter additionally highlighted a series of events leading up to the crash, including a loud explosion-like sound, a noticeable dimming of cabin lights, and multiple ACARS maintenance messages sent before takeoff. It suggested that these elements, along with damage patterns seen in the aft flight recorder imagery, should be analysed together to reconstruct a clear and consistent timeline and to assess whether an electrical failure played a role.Also read | <a href="https://www.wionews.com/world/air-india-crash-investigation-ongoing-several-aspects-being-examined-says-aaib-1781271827693">Air India plane crash investigation ongoing, several aspects being examined, says AAIB</a>The association urged the investigating agency to independently verify the acceleration data in the preliminary report and to closely examine the relationship between RAT deployment, hydraulic power generation, and fuel control switch movement. The FIP recommended that these aspects be fully addressed in the final investigation report.<h2>Ahmedabad plane crash</h2>On June 12, Air India flight Boeing Dreamliner 787-8, carrying 242 people onboard, crashed moments after taking off from the Sardar Vallabhbhai Patel International Airport in Ahmedabad in the afternoon. The deadly incident resulted in the death of 241 people on board, leaving only one survivor. Other casualties were also reported on the ground at the site of the crash, bringing the total death toll from the incident to 260.WATCH | IAF Jet Crash: IAF Orders A Court Of Inquiry To Ascertain Cause Of Crash <a href="https://www.wionews.com/videos/iaf-jet-crash-iaf-orders-a-court-of-inquiry-to-ascertain-cause-of-crash-1781367113826/embed">https://www.wionews.com/videos/iaf-jet-crash-iaf-orders-a-court-of-inquiry-to-ascertain-cause-of-crash-1781367113826/embed</a>&nbsp;

The pilots’ body has questioned the AI171 crash report’s RAT timeline, suggesting a possible earlier technical fault. The emergency system’s deployment is now central to the investigation.

The Federation of Indian Pilots (FIP) has written to the Aircraft Accident Investigation Bureau (AAIB), flagging discrepancies in the preliminary report on the Air India Flight AI171 crash. Highlighting that the deployment of the Ram Air Turbine (RAT) may not be linked to the fuel interruption and raising doubts on the timeline, the FIP has called for fresh simulator tests to verify the sequence of events. The issue has drawn attention to a little-known aircraft safety system, which may provide investigators with clues on what led to the deadly crash that claimed the lives of 260 people onboard and on the ground, leaving just one surviving passenger. What is a Ram Air Turbine (RAT)? A Ram Air Turbine (RAT) is an emergency backup power system installed on several commercial aircraft, including the Boeing 787 Dreamliner, which was involved in the crash in Ahmedabad last year. The RAT, which is a small wind-driven turbine, is connected to a hydraulic pump or an electric generator. It is deployed automatically if a plane experiences a major loss of electrical power, hydraulic power, or engine-generated power. Once deployed, the RAT can provide enough power to operate critical flight controls, instruments, communication systems and other essential functions needed for pilots to maintain control of the aircraft and attempt a landing. When is RAT deployed? RAT can be deployed automatically if both engines of an aircraft suffer a failure. It can also be deployed in case of a complete loss of power or if severe hydraulic failures are detected. The RAT can also be deployed manually by the pilots in case of an emergency. Also read | Pilots’ body flags gaps in Air India crash report, calls for fresh probe to verify timeline, RAT deployment As RAT is linked to major failures of an aircraft, its deployment on flight AI171 may give investigators crucial clues on the sequence of events that led to the deadly crash. What are the doubts raised by pilots’ bodies? The pilots’ body raised concerns about whether Boeing 787 simulator results align with the timeline outlined in the AAIB’s preliminary findings, which stated that the aircraft’s emergency RAT was deployed after the fuel control switch movement. The FIB suggested that the RAT deployment may have occurred due to an electrical fault or other existing issue, adding that it may have deployed before the fuel switch movement. The FIP also cited flight simulator data indicating that the RAT typically begins generating power roughly 18 seconds after a fuel interruption. On this basis, it argued that the RAT deployment might not be directly linked to fuel switch movement. “While the report indicates RAT power generation approximately 4-5 seconds after fuel interruption, simulator testing reportedly indicates approximately 18 seconds. The letter therefore suggests that RAT deployment may have occurred before fuel control switch movement and may indicate an earlier system or electrical fault requiring further investigation,” the letter read. Referring to CCTV footage from Ahmedabad airport, the letter noted that the RAT appeared to already be deployed while the aircraft was still on the runway before rotation. This, it said, further strengthens the possibility of an earlier system anomaly rather than a fuel-control-triggered event. The letter additionally highlighted a series of events leading up to the crash, including a loud explosion-like sound, a noticeable dimming of cabin lights, and multiple ACARS maintenance messages sent before takeoff. It suggested that these elements, along with damage patterns seen in the aft flight recorder imagery, should be analysed together to reconstruct a clear and consistent timeline and to assess whether an electrical failure played a role. Also read | Air India plane crash investigation ongoing, several aspects being examined, says AAIB The association urged the investigating agency to independently verify the acceleration data in the preliminary report and to closely examine the relationship between RAT deployment, hydraulic power generation, and fuel control switch movement. The FIP recommended that these aspects be fully addressed in the final investigation report. Ahmedabad plane crash On June 12, Air India flight Boeing Dreamliner 787-8, carrying 242 people onboard, crashed moments after taking off from the Sardar Vallabhbhai Patel International Airport in Ahmedabad in the afternoon. The deadly incident resulted in the death of 241 people on board, leaving only one survivor. Other casualties were also reported on the ground at the site of the crash, bringing the total death toll from the incident to 260. WATCH | IAF Jet Crash: IAF Orders A Court Of Inquiry To Ascertain Cause Of Crash https://www.wionews.com/videos/iaf-jet-crash-iaf-orders-a-court-of-inquiry-to-ascertain-cause-of-crash-1781367113826/embed

The pilots’ body has questioned the AI171 crash report’s RAT timeline, suggesting a possible earlier technical fault. The emergency system’s deployment is now central to the investigation.

What is RAT and how does it work? The emergency system at the centre of Air India crash probe | WION Decodes

The Federation of Indian Pilots (FIP) has written to the Aircraft Accident Investigation Bureau (AAIB), flagging discrepancies in the preliminary report on the Air India Flight AI171 crash. Highlighting that the deployment of the Ram Air Turbine (RAT) may not be linked to the fuel interruption and raising doubts on the timeline, the FIP has called for fresh simulator tests to verify the sequence of events. This comes as the AAIB on Friday (Jun 12) released an interim report on one of the deadliest aviation disasters in the country, marking its one-year anniversary. The crash claimed the lives of 260 people on board and on the ground, leaving just one surviving passenger.<h2>What did the FIP say?</h2>The pilots’ body raised concerns about whether Boeing 787 simulator results align with the timeline outlined in the AAIB’s preliminary findings, which stated that the aircraft’s emergency RAT was deployed after the fuel control switch movement. The FIB suggested that the RAT deployment may have occurred due to an electrical fault or other existing issue, adding that it may have deployed before the fuel switch movement.Also read | <a href="https://www.wionews.com/india-news/what-is-rat-and-how-does-it-work-the-emergency-system-at-the-centre-air-india-crash-probe-wion-decodes-1781515875010">What is RAT and how does it work? The emergency system at the centre Air India crash probe | WION Decodes</a>The FIP also cited flight simulator data indicating that the RAT typically begins generating power roughly 18 seconds after a fuel interruption. On this basis, it argued that the RAT deployment might not be directly linked to fuel switch movement.“While the report indicates RAT power generation approximately 4-5 seconds after fuel interruption, simulator testing reportedly indicates approximately 18 seconds. The letter therefore suggests that RAT deployment may have occurred before fuel control switch movement and may indicate an earlier system or electrical fault requiring further investigation,” the letter read.Referring to CCTV footage from Ahmedabad airport, the letter noted that the RAT appeared to already be deployed while the aircraft was still on the runway before rotation. This, it said, further strengthens the possibility of an earlier system anomaly rather than a fuel-control-triggered event.The letter additionally highlighted a series of events leading up to the crash, including a loud explosion-like sound, a noticeable dimming of cabin lights, and multiple ACARS maintenance messages sent before takeoff. It suggested that these elements, along with damage patterns seen in the aft flight recorder imagery, should be analysed together to reconstruct a clear and consistent timeline and to assess whether an electrical failure played a role.The association urged the investigating agency to independently verify the acceleration data in the preliminary report and to closely examine the relationship between RAT deployment, hydraulic power generation, and fuel control switch movement. The FIP recommended that these aspects be fully addressed in the final investigation report.WATCH | IAF Jet Crash: IAF Orders A Court Of Inquiry To Ascertain Cause Of Crash <a href="https://www.wionews.com/videos/iaf-jet-crash-iaf-orders-a-court-of-inquiry-to-ascertain-cause-of-crash-1781367113826/embed/embed">https://www.wionews.com/videos/iaf-jet-crash-iaf-orders-a-court-of-inquiry-to-ascertain-cause-of-crash-1781367113826/embed/embed</a>&nbsp;

FIP has flagged inconsistencies in the Air India AI171 crash report, questioning RAT activation timing and fuel-switch link, citing simulator data, CCTV footage, and urging a deeper AAIB investigation.

The Federation of Indian Pilots (FIP) has written to the Aircraft Accident Investigation Bureau (AAIB), flagging discrepancies in the preliminary report on the Air India Flight AI171 crash. Highlighting that the deployment of the Ram Air Turbine (RAT) may not be linked to the fuel interruption and raising doubts on the timeline, the FIP has called for fresh simulator tests to verify the sequence of events. This comes as the AAIB on Friday (Jun 12) released an interim report on one of the deadliest aviation disasters in the country, marking its one-year anniversary. The crash claimed the lives of 260 people on board and on the ground, leaving just one surviving passenger. What did the FIP say? The pilots’ body raised concerns about whether Boeing 787 simulator results align with the timeline outlined in the AAIB’s preliminary findings, which stated that the aircraft’s emergency RAT was deployed after the fuel control switch movement. The FIB suggested that the RAT deployment may have occurred due to an electrical fault or other existing issue, adding that it may have deployed before the fuel switch movement. Also read | What is RAT and how does it work? The emergency system at the centre Air India crash probe | WION Decodes The FIP also cited flight simulator data indicating that the RAT typically begins generating power roughly 18 seconds after a fuel interruption. On this basis, it argued that the RAT deployment might not be directly linked to fuel switch movement. “While the report indicates RAT power generation approximately 4-5 seconds after fuel interruption, simulator testing reportedly indicates approximately 18 seconds. The letter therefore suggests that RAT deployment may have occurred before fuel control switch movement and may indicate an earlier system or electrical fault requiring further investigation,” the letter read. Referring to CCTV footage from Ahmedabad airport, the letter noted that the RAT appeared to already be deployed while the aircraft was still on the runway before rotation. This, it said, further strengthens the possibility of an earlier system anomaly rather than a fuel-control-triggered event. The letter additionally highlighted a series of events leading up to the crash, including a loud explosion-like sound, a noticeable dimming of cabin lights, and multiple ACARS maintenance messages sent before takeoff. It suggested that these elements, along with damage patterns seen in the aft flight recorder imagery, should be analysed together to reconstruct a clear and consistent timeline and to assess whether an electrical failure played a role. The association urged the investigating agency to independently verify the acceleration data in the preliminary report and to closely examine the relationship between RAT deployment, hydraulic power generation, and fuel control switch movement. The FIP recommended that these aspects be fully addressed in the final investigation report. WATCH | IAF Jet Crash: IAF Orders A Court Of Inquiry To Ascertain Cause Of Crash https://www.wionews.com/videos/iaf-jet-crash-iaf-orders-a-court-of-inquiry-to-ascertain-cause-of-crash-1781367113826/embed/embed

FIP has flagged inconsistencies in the Air India AI171 crash report, questioning RAT activation timing and fuel-switch link, citing simulator data, CCTV footage, and urging a deeper AAIB investigation.

Pilots’ body flags gaps in Air India crash report, calls for fresh probe to verify timeline, RAT deployment

On Monday (September 22), the Supreme Court directed the Union government and the Directorate General of Civil Aviation (DGCA) to submit their responses on how they plan to guarantee an ‘unbiased, impartial, and swift’ investigation into the tragic Air India crash that occurred on June 12 in Gujarat. The court was responding to a petition filed by the Safety Matters Foundation, which has called for a court-monitored investigation conducted by an independent entity.&nbsp;Justices Surya Kant and N. Kotishwar Singh, who were presiding over the case, issued notices to both the government and the DGCA, seeking their replies within two weeks. The petition challenged the premature release of a preliminary report by the DGCA that seemed to suggest pilot error as a key cause, particularly pointing to the movement of the fuel control switches from ‘RUN’ to ‘CUTOFF’ shortly after takeoff, leading to engine failure.&nbsp;Also Read: <a href="https://www.wionews.com/india-news/somalia-bound-cargo-ship-loaded-with-rice-and-sugar-catches-fire-off-gujarat-porbandar-coast-1758524786632">Somalia-bound cargo ship loaded with rice and sugar catches fire off Gujarat coast</a>&nbsp;During the hearing, advocate Prashant Bhushan, representing the petitioner, argued that over three months had passed since the crash with no clear answers on what caused the incident, why it occurred, and what measures were being implemented to prevent a recurrence. He also flagged the potential conflict of interest in the investigation panel, which includes three members from the DGCA—an organisation already facing scrutiny for possible negligence.&nbsp;While acknowledging the need for an unbiased probe, the bench raised concerns about releasing sensitive information before the investigation finished. The justices questioned the petitioner's call for the flight data recorder to be made public at this stage, emphasising that the final outcome of the inquiry should be shared once it is complete, to avoid premature leaks that could distort the findings.&nbsp;Also Read: <a href="https://www.wionews.com/india-news/2-held-vehicle-seized-in-connection-with-attack-on-assam-rifles-convoy-in-manipur-that-killed-two-soldiers-1758428487104">2 held, vehicle seized in connection with attack on Assam Rifles Convoy in Manipur that killed two soldiers</a>&nbsp;The court also warned against selectively disclosing information that could harm the dignity of those involved. Referring to the pilots, who tragically lost their lives in the crash, the bench stressed that the public release of incomplete or skewed details could affect their families and reputations. It warned that any attempt to release such details prematurely could lead to misrepresentation.&nbsp;The court made it clear that its focus was on ensuring a thorough, impartial, and prompt investigation, but it refrained from making any decisions regarding the public disclosure of the probe's findings at this stage. The investigation into the crash, is being led by the Aircraft Accident Investigation Bureau of India, with international cooperation from the US National Transportation Safety Board, the UK's Air Accidents Investigation Branch, and representatives from Boeing.

The Supreme Court has asked the Union government and DGCA to ensure a fair, impartial, and swift investigation into the June 12 Air India crash in Gujarat

On Monday (September 22), the Supreme Court directed the Union government and the Directorate General of Civil Aviation (DGCA) to submit their responses on how they plan to guarantee an ‘unbiased, impartial, and swift’ investigation into the tragic Air India crash that occurred on June 12 in Gujarat. The court was responding to a petition filed by the Safety Matters Foundation, which has called for a court-monitored investigation conducted by an independent entity. Justices Surya Kant and N. Kotishwar Singh, who were presiding over the case, issued notices to both the government and the DGCA, seeking their replies within two weeks. The petition challenged the premature release of a preliminary report by the DGCA that seemed to suggest pilot error as a key cause, particularly pointing to the movement of the fuel control switches from ‘RUN’ to ‘CUTOFF’ shortly after takeoff, leading to engine failure. Also Read: Somalia-bound cargo ship loaded with rice and sugar catches fire off Gujarat coast During the hearing, advocate Prashant Bhushan, representing the petitioner, argued that over three months had passed since the crash with no clear answers on what caused the incident, why it occurred, and what measures were being implemented to prevent a recurrence. He also flagged the potential conflict of interest in the investigation panel, which includes three members from the DGCA—an organisation already facing scrutiny for possible negligence. While acknowledging the need for an unbiased probe, the bench raised concerns about releasing sensitive information before the investigation finished. The justices questioned the petitioner's call for the flight data recorder to be made public at this stage, emphasising that the final outcome of the inquiry should be shared once it is complete, to avoid premature leaks that could distort the findings. Also Read: 2 held, vehicle seized in connection with attack on Assam Rifles Convoy in Manipur that killed two soldiers The court also warned against selectively disclosing information that could harm the dignity of those involved. Referring to the pilots, who tragically lost their lives in the crash, the bench stressed that the public release of incomplete or skewed details could affect their families and reputations. It warned that any attempt to release such details prematurely could lead to misrepresentation. The court made it clear that its focus was on ensuring a thorough, impartial, and prompt investigation, but it refrained from making any decisions regarding the public disclosure of the probe's findings at this stage. The investigation into the crash, is being led by the Aircraft Accident Investigation Bureau of India, with international cooperation from the US National Transportation Safety Board, the UK's Air Accidents Investigation Branch, and representatives from Boeing.

The Supreme Court has asked the Union government and DGCA to ensure a fair, impartial, and swift investigation into the June 12 Air India crash in Gujarat

Air India Crash: SC demands 'impartial and expeditious' investigation, seeks government response

The India-based Air Accidents Investigation Branch (AAIB) on Sunday released a 15-page preliminary investigation report of the London-bound Air India AI171 plane crash moments after take-off from Ahmedabad last month, claiming the lives of 242 passengers. In response, the UK's Air Accidents Investigation Branch (AAIB) stated that it is in the process of reviewing its Indian counterpart's preliminary report of the tragic accident.&nbsp;The publication of this preliminary report was welcomed by the UK AAIB. It has uncovered factual information in the summary, UK AAIB said in a statement. The investigation branch is also reviewing this preliminary report in detail and is in communication with AAIB India. In the statement, it has said that the release of information on the investigation rests solely with the Indian authorities under international protocols.&nbsp;The report indicated that the disaster revealed fuel-control switches of the two engines moved from the "run" to the "cutoff" position, within the space of one second, leading to immediate loss of altitude. In the cockpit voice recording, one pilot is heard asking the other why he cut off the fuel. The other denied having done so.&nbsp;The findings of the investigation disclosed that fuel-control switches of the two engines moved from the "run" to the "cutoff" position within the space of one second, resulting in the aircraft losing its altitude, killing 242 passengers.<h3>Key findings in the probe</h3><ul><li>The aircraft carried 54,200 kg of fuel, and its take-off weight of 2,13,401 kg fell within the approved limit. It became airborne at 13:08:39 IST. The engine fuel control switches were briefly turned off and then reactivated with a one-second interval.</li><li>At 13:09:05 IST, one of the pilots issued a distress call, saying “Mayday, mayday, mayday.” However, there was no response from air traffic control (ATC), which then observed the aircraft crash.</li><li>The crash debris was recorded using drones and later moved to a secured location close to the airport. Both engines were recovered and quarantined in a hangar. Fuel samples from the aircraft and refuelling vehicles were tested at the DGCA laboratory and found to be satisfactory.</li></ul><h3>UK based families demand structured investigation</h3>Families in the UK who lost loved ones in the June 12 crash are calling for a structured way to be represented by experts in the official investigation. Keystone Law, representing over 20 of these families, welcomed the narrowed focus of the probe into the aircraft's fuel control switches. However, the firm pointed out that outdated legal frameworks currently prevent families from participating in the investigation.&nbsp;According to a report in Business Standard, James Healy-Pratt, Aviation Partner at Keystone, said, "the families now understand there is a more defined area of investigation, but one of their bigger concerns is that they are excluded from this safety investigation."&nbsp;He argued that a system should be placed allowing expert representation for those families that can feed into the combined safety work that's going on. "And let’s not forget, this aircraft is a global product,” he said, highlighting the involvement of the Indian AAIB, British AAIB, and US authorities. “Families should ideally have a voice in that process.”&nbsp;&nbsp;

The investigation branch is also reviewing this preliminary report in detail and is in communication with AAIB India. AAIB said that the release of information on the investigation rests solely with the Indian authorities under international protocols.

The India-based Air Accidents Investigation Branch (AAIB) on Sunday released a 15-page preliminary investigation report of the London-bound Air India AI171 plane crash moments after take-off from Ahmedabad last month, claiming the lives of 242 passengers. In response, the UK's Air Accidents Investigation Branch (AAIB) stated that it is in the process of reviewing its Indian counterpart's preliminary report of the tragic accident. The publication of this preliminary report was welcomed by the UK AAIB. It has uncovered factual information in the summary, UK AAIB said in a statement. The investigation branch is also reviewing this preliminary report in detail and is in communication with AAIB India. In the statement, it has said that the release of information on the investigation rests solely with the Indian authorities under international protocols. The report indicated that the disaster revealed fuel-control switches of the two engines moved from the "run" to the "cutoff" position, within the space of one second, leading to immediate loss of altitude. In the cockpit voice recording, one pilot is heard asking the other why he cut off the fuel. The other denied having done so. The findings of the investigation disclosed that fuel-control switches of the two engines moved from the "run" to the "cutoff" position within the space of one second, resulting in the aircraft losing its altitude, killing 242 passengers. Key findings in the probe The aircraft carried 54,200 kg of fuel, and its take-off weight of 2,13,401 kg fell within the approved limit. It became airborne at 13:08:39 IST. The engine fuel control switches were briefly turned off and then reactivated with a one-second interval. At 13:09:05 IST, one of the pilots issued a distress call, saying “Mayday, mayday, mayday.” However, there was no response from air traffic control (ATC), which then observed the aircraft crash. The crash debris was recorded using drones and later moved to a secured location close to the airport. Both engines were recovered and quarantined in a hangar. Fuel samples from the aircraft and refuelling vehicles were tested at the DGCA laboratory and found to be satisfactory. UK based families demand structured investigation Families in the UK who lost loved ones in the June 12 crash are calling for a structured way to be represented by experts in the official investigation. Keystone Law, representing over 20 of these families, welcomed the narrowed focus of the probe into the aircraft's fuel control switches. However, the firm pointed out that outdated legal frameworks currently prevent families from participating in the investigation. According to a report in Business Standard, James Healy-Pratt, Aviation Partner at Keystone, said, "the families now understand there is a more defined area of investigation, but one of their bigger concerns is that they are excluded from this safety investigation." He argued that a system should be placed allowing expert representation for those families that can feed into the combined safety work that's going on. "And let’s not forget, this aircraft is a global product,” he said, highlighting the involvement of the Indian AAIB, British AAIB, and US authorities. “Families should ideally have a voice in that process.”

The investigation branch is also reviewing this preliminary report in detail and is in communication with AAIB India. The UK-based AAIB said that the release of information on the investigation rests solely with the Indian authorities under international protocols.

UK investigative agency reviewing AAIB's Air India AI171 crash report publish— Here's what experts say

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What is RAT and how does it work? The emergency system at the centre of Air India crash probe | WION Decodes

Pilots’ body flags gaps in Air India crash report, calls for fresh probe

Air India Crash: SC demands 'impartial & expeditious' probe, seeks govt response

UK investigative agency reviewing AAIB's Air India AI171 crash report publish