Published On: Sat, Aug 8th, 2020

Slippery runway, tailwind likely caused Kozhikode plane crash: Experts

Chennai: A deadly combination of a slippery runway, strong tailwind, bad weather conditions, and landing ahead of the threshold spot could have resulted in the skidding of the ill-fated Air India Express in Kozhikode that claimed 18 lives, two aviation experts said on Saturday.

It may be due to lack of friction between the tyres and the runway

An Air India Express aircraft flying in from Dubai skidded off the runway while landing in Kozhikode on Friday evening and plunged into the deep valley below. At least 17 people were killed, including two pilots.

The aircraft carrying 190 persons, including six crew members, battled heavy rain while landing at 7.41 pm on Friday, and careered off the runway after landing at the table-top airport.

“It may be due to lack of friction between the tyres and the runway. There may be the factor of hydroplaning due to waterlogging,” a pilot not wanting to be quoted said.

Hydroplaning is a condition in which presence of water causes a moving wheel to lose contact with the load-bearing surface, the runway in this case. This makes braking or manoeuvring of the vehicle (plane), impossible. Hence, the aircraft’s speed could not be reduced after landing, the pilot said.

A former Indian Air Force (IAF) navigator pointed out that the standard 9,000-feet Kozhikode runway is not an issue for this kind of aircraft.

“Probably, the pilot landed ahead of the threshold or the usual spot, owing to bad visibility, strong tailwind, and a slippery runway — all odds were stacked against him,” the former navigator said.

“With a reduction in distance available to bring the plane to a halt, the pilot would have to literally sit on the brakes with full reverse engine power. The ditch at the end of the runway must have been on his mind. The slippery runway seems to have done the rest,” he added.

According to him, it was “bad luck” and perhaps “error of judgement” on part of the pilot that led to the tragedy.

Meanwhile, investigating officials from Directorate General of Civil Aviation (DGCA), Aircraft Accident Investigation Bureau (AAIB), top officials of Air India and Air India Express have reached Kozhikode from New Delhi on Saturday, said Air India Express.

They will be probing the cause of accident at the Kozhikode airport where an Air India Express plane skidded and fell into a valley killing 18 passengers, including the two pilots and injuring many others on Friday evening.

Another plane from Mumbai with officials who will coordinate and liaise with various agencies have also reached Kozhikode. They will also provide support and assist families of those affected in the accident.

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