|Quoting btblue (Reply 157):|
I'm looking at the pictures and there seems to be a fair amount of blurring of planes in the background (compared to the picture of the TU134)... I'm thinking he's going at a considerable speed.
Lower light levels, slower camera shutter speed, on a moving object... result... either:
1. Blurred object of focus and sharp background; or
2. Sharp object of focus and blurred background; or
3. Everything's blurred.
|Quoting btblue (Reply 157):|
Seeing as this was a positioning flight after dropping tourists off, feasible that an error was made by the pilot in that he calculated for a heavier landing (having landed previously with pax) therefore requiring more thrust when in fact the aircraft was empty of PAX? This would result in higher speed, greater height above the threshold and the reason he has full flaps?
They would have calculated the approach and landing speeds (including go-around speed) based on their current weight slightly prior to the approach or expected weight on the approach.
On the full flaps issue... the aircraft probably has 1 or 2 flaps setting allowed for use in an all-engine landing... Full flap may result in a more pronounced pitch down, but also gives more drag which allows the engines to run at a higher thrust setting, which results in a more responsive go-around/
Well, the normal procedure is, check spoilers deployed, reversers unlocked, and brakes (manual or auto)... and yes, spoilers first, then unlock reversers... Yes, this new procedure is potentially cumbersome... but, the landing calculations can be done without reversers and more wheelbrakes... by the standard logic anyways... touchdown, spoilers, apply manual wheelbrakes (or check autobrakes), and not even touching the reversers... are perfectly acceptable.
|Quoting F9animal (Reply 169):|
I mean, by the time the crew determines a failure of thrust reverse, could time be a critical factor? What do you do then? Firewall the throttle and hope you have enough room? And ice I would think could play a very nasty role if its on the runway.
No... once you have commanded reversers and you don't get reverser deployment, general logic would be, keep it at idle and continue without the reverser... Why? Because there is no guarantee that the reversers had not unlocked, the last thing you want is firewall the throttles, get airborne, and then get a "reverser deployed" light on one or both engines. You'd be in deep doo doo!
That warning of not going around once thrust reverser has been commanded (regardless of deployment), exists in almost almost every airliner I've seen the manuals for (300/310, 320fam, 330, 340, 737allgens, 747, 757, 767, 777, 787, MD80, a couple of Bombardiers and Embraers too)... so such a logic isn't and should't be limited to the Tu-204.
Now, can anyone calculate the speed of the car that has the dashcam? I think from there we can calculate the aircraft speed just prior to impact... (google earth, check the lane markings for distance reference)...????