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# Do you Really Need Speedbrakes VIDEO?

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Hey all. Here is another demo video. First it starts off by demonstrating a NADP2 departure. The second part is to show you that you do not really need speedbrakes to get back in the game. The third part is demonstrating the autobrake and how well PMDG simulated it and its accuracy. If you take a look at the deceleration distance formula: 1/2 X (speed in feet per second) X (time to decelerate to 0). So in my case my Vref speed is 142 which is a 240 feet per minute rate of speed. The autobrake 3 setting decelerates the 737 at a rate of 7 feet per second. So the time to decelerate to 0 is approximately 34 seconds. So.... 1/2 X 240 X 34 = 4080 feet. So as soon as the wheels touch down and braking begins it should take 4080 feet to stop. I touched down 1500 feet down the runway so you have to add this to the 4080 feet. So that is about 5600. After doing the calculations you can see on this chart where I stopped and where I SHOULD have stopped. There is a difference of maybe 2-300 feet. Damn fine job PMDG!

http://vimeo.com/27673259

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Great stuff Jack, Keep it coming

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Take a close look at this video. Lots of great information concerning proper techniques to use in most phases of flight. Great video, thanks Jack!

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AND I babble too!

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You estimated 34 seconds to stop, took you 36. That's pretty ****** accurate. Nice video!

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Amazing thanks for this.

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Jack, --How long have you been flying the NG in real life?

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You estimated 34 seconds to stop, took you 36. That's pretty ****** accurate. Nice video!
Hey Kenneth. I didn't even think about timing it so thanks for doing that!
Jack, --How long have you been flying the NG in real life?
Ben Cap, 5 years now on the NG.

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Wooo! these videos are awesome. Really teaches us how to truly operate the NG.

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Awesome video, Jack! Thanks for sharing. :(

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Yes but would you really do that in real life with passengners aboard. Would think the passenagers would be noticing those ups and downs.

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Yes but would you really do that in real life with passengners aboard. Would think the passenagers would be noticing those ups and downs.
Passengers wouldn't know the difference. Sure the difference between 257 kts and 310 might seem like a lot BUT the ANGLE might only be a coupke degrees.

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Good stuff Jack, I loved it! Learned some very interesting things there, thanks a bunch! Feel free to do a whole series

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Hey Jack. Would you know what would cause the Heading Select Roll Mode to dissapear after pushing TOGA. I still get N1 in speed and TO/GA in pitch. Thanks

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Hey Tamati. Go to your options menu on the CDU. I think its in systems or something. You will see somewhere where its WINGS LEVEL/ HDG SEL. Use HDG SEL and your heading select will not disappear

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Passengers wouldn't know the difference. Sure the difference between 257 kts and 310 might seem like a lot BUT the ANGLE might only be a coupke degrees.
I thought the same thing your VSI almost hit 5000 fpm thats normal?

GJ Jack!

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I thought the same thing your VSI almost hit 5000 fpm thats normal?
Have seen it in the real plane yep. It usually isn't a SUSTAINED 5000 fpm tho.

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@ jack_C. I use radar contact and it almost always instructs me to descend before my TOD, resulting in my vnav path being way off so i usually use FLCH or V/S. Is this incorrect procedure? If ATC insructs you to descend early do you select descent now on the CDU and then vnav path using the method in your video?

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Amazing video, I'm going to use everything I watched on my next NGX flight. One thing I noticed. After takeoff, you engaged the AP way above the FD indication, something like 5 degrees. Is that something you would've done in RL as well? I thought the Realistic AP Engagement would prevent you from connecting the AP under that condition. One other thing, Throttles idle at 20', flare at 10', did I get it right? Thanks!

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Fantastic video, thanks for making it for us Jack.

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@ jack_C. I use radar contact and it almost always instructs me to descend before my TOD, resulting in my vnav path being way off so i usually use FLCH or V/S. Is this incorrect procedure? If ATC insructs you to descend early do you select descent now on the CDU and then vnav path using the method in your video?
In this case I usually just put the lower altitude in the MCP window then engage ALT INTV. IF ATC wants you to descend WAY WAY before the T/D then use 500 FPM on V/S since ALT INTV commands 1000 FPM.
Amazing video, I'm going to use everything I watched on my next NGX flight. One thing I noticed. After takeoff, you engaged the AP way above the FD indication, something like 5 degrees. Is that something you would've done in RL as well? I thought the Realistic AP Engagement would prevent you from connecting the AP under that condition. One other thing, Throttles idle at 20', flare at 10', did I get it right? Thanks!

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Thanks Jack for making the time to provide us with this video. Always appreciated.

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Very informative video and many many thanks. Most of us have an idea of procedures with tutorials and documents, past virtual experience to go by. But its nice when a pilot with a good clear voice and presentation technique shows us their virtual flight, procedures and VNav corrections. Thanks once again,

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Hey Tamati. Go to your options menu on the CDU. I think its in systems or something. You will see somewhere where its WINGS LEVEL/ HDG SEL. Use HDG SEL and your heading select will not disappear
Oh yes that would be it. Thanks for taking the time to answer :)

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