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Posted

I must admit I hadn't thought of wind shear. It is rare, but it happens.

UPDATE: A report in from the pilot, possibility of a microburst. This puts a different light on the accident as the pilot stated he was trying to get setup for a missed approach (aborted landing) but no time.

Can A Microburst or Wind Shear Crash a Plane?

The pilot of the Indonesian jet that crashed into the sea in Bali on Saturday, says he felt the plane was “dragged” down by wind as he was trying to abort a landing and fly around for a second approach, reported Reuters.

The brand-new Boeing 737 passenger jet, operated by Indonesian budget carrier Lion Air, belly-flopped into the water just short of the runway on the tourist island’s main airport, cracking the fuselage just behind the wings. All 108 passengers and crew survived.

“Investigators and officials are still trying to determine what caused the plane to plunge into the sea, leaving terrified passengers to swim through the water to shore or be plucked to safety by police in rubber dinghies,” reported the AFP.

And while investigators were working Monday to to haul the half-submerged wreckage onto the beach, analysts are speculating that the fault may have been weather related.

ANALYSIS: Fasten Your Seat Belt: Bumpier Flights With Warming

Storms are known to have the potential to send a downdraft or “microburst” of strong wind down onto the ground. If a plane flies through a microburst it will suddenly experience “wind shear,” or change in wind speed and direction.

<snip>

The modern “Predictive Windshear System” on all Boeing 737s are available below 2,300 feet. Reuters reported that on approach, an audio warning says, “Go around, windshear ahead.”

It is not clear yet if the pilots received this warning or not. But if the pilots do not get the signal at least 10 seconds before approaching a microburst, they will likely not have time to react. As the downdraft of wind spreads outward over the ground it can increase the headwind over the wings of a plane and increase the aircraft’s airspeed. “As the plane passes through the shear, the wind quickly becomes a downdraft and then a tailwind. This reduces the speed of air over the wings, and the extra lift and speed vanish,” explains a NASA website.

discovery.com

  • Like 1
Posted

First thing when you got a windshear warning is to push full power, raise the nose to flight director and keep the gear down. Retracting the gear affect your rate of climb as gear and gear covers induce drag when moving.

If you got lucky you can fly away without touching anything.

In asia you see patches of heavy rain moving over airport. Better to wait 20 to 30 minutes until runway is clear.

You just need to explain why you burn more fuel as a pilot and convince your boss to not to fire you because in aviation money pass prior safety , regrettably! .

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