NEW DELHI: The Directorate General of Civil Aviation (DGCA) has asked Air India to reinspect the ram air turbine (RAT) for storage on all aircraft whose power conditioning module (PCM) was replaced in the recent past. PCM provides power for other modules that support the operation of multiple aircraft systems. RAT deployment happens when the system senses either electric, hydraulic or twin engine failure. The directive aims to check any correlation between newly replaced PCM and RAT deployment. Following the un-commanded deployment of RAT on an AI Boeing 787 last Saturday just before landing in the UK, the regulator has asked the US aerospace major to submit a "comprehensive report outlining the preventive measures to be implemented in respect of the un-commanded" RAT deployment. "Boe

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