Ahmedabad plane crash fall: The Aircraft Accident Investigation Bureau (AAIB), which is investigating the tragic AI 171 crash drop that killed all passengers except passengers, has released a 15-page preliminary report on the wrong Air India plane crashed in Ahmedabad on June 12, seconds after London's takeoff. Reuters It has been reported. The investigator further said it had completed drone photos and videotaping on the wreckage site, and that the aircraft parts had been moved to a safe area near the airport.
“Both engines were recovered from the wreckage site and isolated in the airport hangar,” the AAIB report further stated. This was the first time the bestselling Widebody Dreamliner or Boeing 787 suffered a fatal crash and caused the loss of its hull.
The media also reported that at this stage of the investigation, no safety recommendations have been issued for engine operators and manufacturers of B787-8 aircraft or GEGENX-1Bs.
3 seconds after takeoff
Three seconds after takeoff, the fuel cutoff switch on the aircraft engine shifted from run to cutoff almost simultaneously. This means that the fuel did not reach the engine. This will cause the aircraft to lose thrust and sink, Reuters I reported it by citing the report.
The pilot's maidal call to the ATC also revealed that the aircraft had lost thrust and the pilot was unable to lift it.
“Did you move the fuel switch yourself?”
US aviation safety expert Anthony Brickhouse said the way the switch moves is inconsistent with normal operations. “Did they move on their own or did they move for the pilot?” he asked. “And if they were moved for the pilot, why?”
Another US aviation safety expert, John Cox, said the fuel switch that feeds the engine cannot accidentally move to the pilot. “You can't smash them, they move,” he said.
“The engine was revived, but…”
In its initial findings, the AAIB said that Engine 2 was capable of revisiting but could not repeatedly reintroduce the fuel in an attempt to recover. He added that the core deceleration in Engine 1 stopped, reversed, and began to progress towards recovery.
While the investigation is underway, the agency investigating the crash further stated that a full analysis of postmortem reports of crew and passengers has been considered to support the results of the aviation survey with engineering expertise.
The first probe suggests that the fuel cutoff switch on Engine 1 will transition from “run” to “cutoff” at 1:38.52pm, followed by Engine 2 making the same transition at 1:38:56pm. This was followed by an increase in exhaust gas temperature (EGT) in both engines, indicating regenerative activity.
“Why did you cut off the fuel?”
The AAIB report also revealed the conversation that took place in the cockpit just before the crash. One of the pilots asked the other, “Why did you cut off?” To this, another pilot who could become a co-pilot replied, “I didn't.”
Engine and Flight Recorder (EAFR) data reveals that both engines' N2 values fell below the minimum idle speed, Reuters reported, citing the AAIB probe on Air India's crash.
The AI 171 reached an altitude of 625 feet and began suddenly descending at a speed of 475 feet per 475 feet, reaching a maximum speed of 180 knots indicating airflow (IAS) at 1:38:42 pm. Soon after this, the fuel cutoff switches on both engines went from “run” to “cutoff” within seconds of each other.
Fuel switches are most commonly used to turn off the engine when the plane arrives at the airport gate and arrives in a particular emergency, such as an engine fire. However, the report does not indicate that there was an emergency that required an engine cutoff.
The investigators will look into additional evidence sought by stakeholders, AAIB said in a preliminary report on crash crashes on AI planes. PTI It has been reported.
The two black boxes of the plane were retrieved a few days after the collision and were later downloaded in India. It provides important data such as altitude, airspeed, and final pilot conversations. This helps narrow down the possible causes of crashes.
Air India Plane Crash: Important Takeouts from AAIB Report
1- AAIB Report Checks for Dual Engine Failures. He said that both engines lost power shortly after takeoff as the fuel switches moved from “driving” to “cutoff” each other.
2-Fuel supply to both engines was suspended. This is the standard operating procedure in the event of a Boeing dual engine failure. The pilot attempted to restart the engine, but failed to recover before crashing into the hostel for a medical student and becoming a fireball.
3-Cockpit audio recordings revealed that one pilot asked another, “Why did you cut off?” Others denied this.
4-Dual engine failure led to the deployment of the RAM air turbine (rat), an emergency power system. The rats provide enough power to ensure the aircraft lands safely.
5-The aircraft remained in the air for just 32 seconds, causing the hostel to crash 0.9 nautical miles from runway 23 at Ahmedabad Airport.
