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Air India asked by Indian regulator to check emergency power systems on certain 787 jets

India's aviation regulator asked Air India inspect the emergency power system of some Boeing Dreamliner after it unexpectedly activated during a flight last month.

In a Monday statement, the Directorate General of Civil Aviation said that it had also requested that the U.S. aircraft manufacturer submit a report that outlines the preventive measures which can be taken in order to prevent the deployment of this system. The regulator has asked Boeing for details about similar uncommanded RATs deployed on 787s around the world.

Reports last week stated that the DGCA asked Boeing for additional information following the incident which occurred on a flight from Amritsar, a northern Indian city, to Birmingham, Britain on October 4. The aircraft landed without incident and the pilots didn't report any abnormalities. Later, it returned to commercial use.

After the Air India 787 crash on June 12, which killed 260 people, the unexpected deployment of the system has been questioned. Indian investigators' preliminary report showed that the fuel engine switches on the aircraft had switched from run to shut off almost simultaneously after takeoff.

A source with first-hand knowledge of the incident said last week that India's Aircraft Accident Investigation Bureau is analyzing and gathering details about the Birmingham flight accident. However, it has not yet seen a link between the unexpected RAT deploy on October 4, and the crash of June 12, according to a source.

The DGCA asked Air India for a re-inspection of the RAT in aircraft that recently had a new system installed to regulate power distribution. The number of affected aircraft was not immediately known.

Requests for comments from Boeing, Air India, and AAIB were not immediately responded to.

The Federation of Indian Pilots wrote to India's Civil Aviation Minister Ram Mohan Naidu on Friday to ask the government to stop all Air India 787s, and to check their electrical system.

Air India, Boeing or Naidu’s office did not respond immediately to requests for comments on the letter. Reporting by Abhijith Tandon and Kashish Ganapavaram, both in New Delhi; editing by Mrigank Dahniwala

(source: Reuters)