"Practice" Emergency Descent

The Concord used to use T/R's in flight. There was a video of them going into JFK on here a while ago and the Captain gave a good explanation of it. I think it was "fairly" common for them but they did have checklist items for it, and the engineer looked pretty busy back there!
 
SoonerAv8r said:
I've pegged out the PC-12 at 10,000fpm. That was a blast!
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You can run the PC-12 right up to the redline once you get the gear out, right? An instructor I had for working on my commercial flew right seat in PC-12's, and did his high altitude stuff in one. Said the emergency decent was one of the coolest things he'd done.
 
Lance F said:
In a Lear 35 the emergency descent profile (thrust at idle, spoilers extended, landing gear down) gives you -6,000fpm. Any faster descent rate would exceed Vle, which probably isn't a good idea.
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With just spoilers, I've had greater than 6,000fpm (VSI pegged) in an "Oops, we're going to miss that crossing restriction" mode.
 
I believe i've heard one of the Russian IL-'s had the possibilty's of using the reversers in mid-air at idle reverse.

Maybe the 727'ski ? (cant remember the IL #)
 
We practice it in the sim about every quarter for the KC-10. We are not allowed to actual accomplish it in flight however unless a real emergency exits. Its fun to do in the sim though..you can really get a good rate going down sts.
 
Did one in the Encore during my training. I found it interesting that the VSI pegs at -9999. My guess is that we were doing something like 12,000-13,000 fpm at the highest. FL360 to 4000 in 4.5 minutes. I was too intimidated by the nose down attitude that I didn't keep it at Mmo, so we probably could've done better than that.
 
NC_BE300 said:
I believe i've heard one of the Russian IL-'s had the possibilty's of using the reversers in mid-air at idle reverse.

Maybe the 727'ski ? (cant remember the IL #)
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I am not sure about any of the Ilyusins, but I know that the Tupelov Tu-154 is a Russian airliner that can deploy the TRs in flight. Here is a pic of one just before touchdown.

http://www.airliners.net/photo/Aero...1079431/&sid=10a4e99c959b9b4147718bfde130aea8
&sid=10a4e99c959b9b4147718bfde130aea8

&sid=10a4e99c959b9b4147718bfde130aea8
 
averyrm said:
With just spoilers, I've had greater than 6,000fpm (VSI pegged) in an "Oops, we're going to miss that crossing restriction" mode.
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Turn off the fuel computers if you wanna come down even quicker(not an approved method of course)
 
subpilot said:
Am I reading that right? Are there even jets or companies that allow the use of thrust reversers in-flight?
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We can extend the inboard TRs to reverse idle in the C-5, which is the procedure for an emergency descent*. The C-17 can extend all four, and like others have said, the DC-8 also has the capability.

*we can't use the spoilers as "speedbrakes" in flight; the C-5 wing wasn't designed for it. (well, you CAN by pulling the ground spoiler override, but you'll probably only do it ONCE.)
 
subpilot said:
In the SAAB, going into reverse (or was it ground-idle?) in-flight was prohibited after an accident occured due to a pilot doing this. They even installed a lock on the power lever to prevent moving the control to reverse (ground-idle?) until weight-on-wheels was detected.
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This is what happens when you have two Captains flying the airplane. I think it was a "watch this" thing...as I remember, it could be done in the Jetstreams that Eagle had and the guy flying had recently transitioned and just assumed you could do it in the Saab. Different airplane, different engine. In the free turbine motor, it ended up burning up both motors instantaneously, simultaneously. They landed in a cornfield and everybody walked away totally unscathed...except the airplane, which now very possibly is part of the beer can you're holding.
 
subpilot said:
In the SAAB, going into reverse (or was it ground-idle?) in-flight was prohibited after an accident occured due to a pilot doing this. They even installed a lock on the power lever to prevent moving the control to reverse (ground-idle?) until weight-on-wheels was detected.
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I believe it is know as the CrossAir fix after that airline plowed on in on short final. The crew pulled them into reverse and one went into reverse and the other didn't. The plane hit the numbers inverted.

I could be wrong on the airline name as I have been in the saab in a few years. Seggy do you remember?

NC_BE300 said:
I believe i've heard one of the Russian IL-'s had the possibilty's of using the reversers in mid-air at idle reverse.

Maybe the 727'ski ? (cant remember the IL #)
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The TUPELOV 154 copied the 727, not theIlyushin, but still a roooskie. They seem to copy a lot of Boeing and Airbus designes.
 
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