New Delhi: India’s aviation safety regulator Directorate General of Civil Aviation (DGCA) has asked Tata Group-led Air India to reinspect the emergency power source system RAT (Ram Air Turbine) for stowage in all aircraft whose power conditioning module (PCM) was replaced in the recent past, sources said on Sunday.

A Ram Air Turbine (RAT) is an emergency backup system in aircraft that deploys to provide hydraulic power and electricity when primary power sources fail. It works by using the aircraft’s forward motion to spin a small turbine, which then powers critical flight controls and avionics, allowing pilots to safely land the plane. The RAT is designed for emergencies like a dual-engine failure or total electrical system failure.

According to the DGCA advisory: “Air India has been adv

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