Yikes. I didn't see the first video, but Nathan's was enough for me.
We've all porpoised a light aeroplane at some stage during our training, but it's never too nice watching a large jet do it. No matter what the aeroplane, the critical thing is to hold the landing (flared) attitude after the bounce, and add power to arrest the ensuing rate of descent. Applying nose-down elevator after a bounce makes for successively harder and higher subsequent bounces and - left unchecked - results in the collapse of the landing gear. Nasty stuff!
Here's what the Boeing's 747-400 Flight Crew Training Manual has to say about bounce recovery:
Quote:
If the aircraft should bounce, hold or re-establish a normal landing attitude and add thrust as necessary to control the rate of descent. Thrust need not be added for a shallow bounce or skip. When a high, hard bounce occurs, initiate a go-around.
Apply go-around thrust and use normal go-around procedures. Do not retract the landing gear until a positive rate of climb is established because a second
touchdown may occur during the go-around.
Bounced landings can occur because higher than idle power is maintained through initial touchdown, disabling the automatic speedbrake deployment even when the speedbrakes are armed.
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7th June 2010, 09:10 PM
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