Thursday, July 01, 2021

DGCA issues fresh safety rules for civilian aircraft flying from defence airfields at night

Chandigarh: Following a state government aircraft meeting with an accident while landing at a defence airfield at night, the Directorate General of Civil Aviation (DGCA) has issued fresh instructions on precautions to be taken while carrying out night operations to and from a military airbase.

A safety bulletin issued to all aircraft operators by DGCA’s Air Safety Directorate a few days ago states that during night time landings, visual approach should be given the last preference and instrument landing should be opted for.

Flight crew should preferably carry out a precision approach using the runway’s Instrument Landing System (ILS) and if ILS is not available, a non-precision approach using the Continuous Approach Final Descent (CDFA) should be carried out, the bulletin states.

CDFA is a technique for flying the final approach segment as a continuous descent and is consistent with stabilised approach procedures which brings the aircraft to a point about 50 feet above the runway or to a point where the aircraft has to flare out just before touchdown.

If the aircrew chooses to carry out a visual approach at night, then the approach should be carried out after coming overhead.

The DGCA has advised flight crew to utilise all available landing aids like ILS and non-precision approach to support the approach or follow the guidance of visual approach slope indicator or precision approach path indicator till crossing the runway threshold.

DGCA has asked aircraft operators to take appropriate action on its recommendations, including reassessing operational documents.

In addition, when requesting for runway change at defence airfields, the crew should ensure all the requirements for safe landing, including the position of the runway arrester barrier, are met.

30/06/21 Vijay Mohan/Tribune

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