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Home > Air Safety > Petrified during landing
Petrified during landing
Aviation - Air Safety
Thursday, 09 June 2011 07:45

GPWS Test Mode

Hi Capt Lim,

I always feel petrified when landing and would so appreciate if you could answer these questions for me.

What if the pilot forgets to put the gears down? Is this when you would get the "too low terrain warning" and the other one is, what if you get severe turbulence as you are about to touch down? I mean, sometimes the aircraft drops a lot.

What if this happens when you are about to land?

Love the website and so glad I found it.

Thanks from Australia,


Hi John,

There is no worry about the pilot forgetting to lower the gears before landing as there are visual as well as audio warnings in the cockpit to alert the crew. This is triggered by the GPWS (Ground Proximity Warning System) with this “Too Low, Gear!”  sound when the landing gears are not down during the approach to land. Basically, it is designed to alert pilots if their aircraft is in immediate danger of flying into the ground - see attached video above.

As regards to the severe turbulence prior to landing, there are also warnings activated by the GPWS. Normally, severe turbulence may come with wind shear as well. So the wind shear warnings, “Windshear! Windshear! Windshear!” will be triggered and the pilot will abort the landing by going around until it is safe to do so.

There is also an enhanced version of the GPWS known as EGPWS or sometime known as the terrain awareness warning systems. See below.

PS. To check for any latest updates or postings, please follow my new Twitter at @CaptKHLim

EGPWS Audio Test Modes


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Sudden loss of aircraft balance approaching landing
I was suddenlym jerk out of my seat as well many passengers on flight AK275 as the aircraft slowed down desending slowly for landing during the last 5 mins after the pilot announced flight attendants to prepare for landing. the aircraft suddenly rattle voilently to the right and left which petrified the passengers to cry out loud. what caused such an incident?
chin boon peng , 19 Sep, 2011

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