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Two aircraft on same runway in Toronto

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Old 19th Mar 2020, 21:48
  #21 (permalink)  
 
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Originally Posted by ATC Watcher
variable pitchP :
Yes in Europe but not in the US where the 6000 ft rule applies ( you can clear an a/c to take off provided the preceding has passed the 6000 ft mark)
Most of the Canadian ATC rules are based on US ones , although I am not sure in this particular case it they are exactly the same .Someone from Canada can confirm or infirm that.
US rules require the preceding aircraft be at least 6,000 ft. and airborne if either aircraft is Category III . Lesser distances for Category I and II aircraft.
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Old 19th Mar 2020, 22:51
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Originally Posted by 4runner
you’re not a jet pilot
I think you'll find he is, unless you're suggesting he's lying on his profile.
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Old 20th Mar 2020, 01:29
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Originally Posted by 4runner
you’re not a jet pilot and you’re not an airline pilot. Until such time as you are, ask questions instead of statements aimed at disparaging your fellow and more experienced aviation brethren.
Jet A4's points are perfectly reasonable, I didn't see any statements, just QUESTIONS with the appropriate question marks.

But your post points to a deeper problem that we thought had long since disappeared in this age of CRM. Firstly so many assumptions, "you're not a jet pilot", "you're not an airline pilot" and remember "making an ass out of you and me" . Most of all it's the old Chestnut, yield to my superior experience and shut up that makes you dangerous.

And yes, who the hell rejects a take-off at 135 knots for a bird strike.
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Old 20th Mar 2020, 11:59
  #24 (permalink)  
 
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"And yes, who the hell rejects a take-off at 135 knots for a bird strike."

SSG

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Old 20th Mar 2020, 13:51
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Originally Posted by VariablePitchP
Have you read it, that seems ridiculously dangerous! An embraer will stop from 135kts a fair quicker than a 777 will stop from 110kts...
Originally Posted by tcasblue
What evidence do you have to support this?
Originally Posted by VariablePitchP
There’s a reason 777s don’t fly from London City...
I am not sure that I would consider this as convincing evidence of your blanket statement that an Embraer will stop more quickly(ie deceleration rate) than a 777. Taking it to an extreme, does your blanket statement include a fully loaded Embraer versus a lightly loaded 777(which was possibly the case here as the 777 was only on a 2 hour flight).

As well, the 777 has a lot more brakes than an Embraer(12 versus 4). I wonder if both aircraft at max weight would have the same(or almost the same) deceleration rate from 135 knots. Maybe your original statement is correct, but ability to land in London City is not the evidence I was looking for.
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Old 20th Mar 2020, 20:26
  #26 (permalink)  
 
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H"NS (Canada) with 359 people on board, to taxi into position and hold on runway 06L."

They still say "into position and hold" instead of "line up and wait?"

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Old 21st Mar 2020, 06:00
  #27 (permalink)  
 
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Doing this is tantamount to LAHSO operations i.e only seems good on paper not real life
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Old 21st Mar 2020, 09:43
  #28 (permalink)  
 
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Originally Posted by Dave Gittins
As a British PPL I am used to only ever being clear to land or take-off from a completely clear runway that is "mine".......
DG, depends where you fly in the UK as I've had "land afters" quite frequently over the years in the UK, including the odd one or two when line flying, and, when instructing, have always made sure my students know what to consider when accepting such clearances and when it may be prudent not to take up the offer. Generally, a very useful tool to keep things moving on a busy day esp at mixed fields.

Best one tho was a very pragmatic French ATCO who gave me a "land over [the one which had slithered to a halt after shedding a MLG tyre on touchdown]" clearance! With a vast length of runway after the crippled aircraft, the fact the voiture de pompiers was already at the scene, the 6 or so pax were all clearly gathered beside the wreck on the runway and vis was perfect down the runway just in case someone else was driving out to take a look-see, a quick sidestep so as not to fly directly over the scene before regaining the C/L at very short "displaced" final made life so much easier all round!

Cheers, H 'n' H
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Old 21st Mar 2020, 11:38
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Originally Posted by Pugilistic Animus
Doing this is tantamount to LAHSO operations i.e only seems good on paper not real life
What’s wrong with LAHSO?
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Old 21st Mar 2020, 12:10
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Originally Posted by Check Airman
What’s wrong with LAHSO?
It just always seemed like a bad idea...it just takes a moment's lapse in concentration in order to cause a huge accident...I was never comfortable with it.
It's not about safety it's only about keeping the RWYs hot
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Old 21st Mar 2020, 15:12
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Originally Posted by VariablePitchP
There’s a reason 777s don’t fly from London City...
Get them light enough and you'd be impressed. Full power takeoff the other day, in a light w/b, and the acceleration was very impressive. My PR is a 757 and 27 degrees of pitch, and accelerating, at V2+ a bunch. Or a 767-300 doing 6000+ FPM out of 10,000'. Light w/b's are impressive at full power. With full derates that we use on light flights we're only using approx. 66% of our thrust. It's much different when we use 100%!!!
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Old 21st Mar 2020, 18:30
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Try taking a 747-400 at very light weight LHR-LGW - yeehaw as the Americans might say!!
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Old 22nd Mar 2020, 08:14
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At my home airport, it usually goes something like this. Plane A is cleared for takeoff and reads it back. Plane B is then told to line up. The hold bar is a bit further back than usual. At about the time plane B is just shy of the runway edge line, B is given the takeoff clearance. As B is reading it back, plane A is just getting off the ground. Once B reads back the takeoff clearance, C is told to line up, and so on.

re the LAHSO, I guess it depends on what you’re used to. Many US pilots are uncomfortable with “line up and wait behind...”. Just like “line up and wait”, it greatly increases efficiency. Last time I did it, it was kinda neat seeing an A380 roll through the intersection that I’d held short of. Looks neat on the approach too. Only eclipsed by the parallel approaches into SFO and SYD (I think).
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Old 22nd Mar 2020, 11:03
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What is the typical V1 for an E190. The report says the RTO was initiated at 135 knots for a bird strike yet there was no damage. Is it possible to have a bird go on the engine, create a compressor stall leading to an RTO and then find no damage.
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Old 22nd Mar 2020, 11:38
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"At my home airport, it usually goes something like this. Plane A is cleared for takeoff and reads it back. Plane B is then told to line up. The hold bar is a bit further back than usual. At about the time plane B is just shy of the runway edge line, B is given the takeoff clearance. As B is reading it back, plane A is just getting off the ground. Once B reads back the takeoff clearance, C is told to line up, and so on."

Check Airman:
​​​​​​I must've misunderstood something what you describe sounds perfectly routine and normal.
though I can imagine that if most of the planes served are heavies and supers then there would a delay for wake turbulence. Although my mind's made up as far as LAHSO operations
​​​​​

Last edited by Pugilistic Animus; 22nd Mar 2020 at 12:47.
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Old 23rd Mar 2020, 07:29
  #36 (permalink)  
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It appears LAHSO can be confounding to pilots
Not only to pilots , to Controllers as well . We can open once more another thread on LAHSO , (or SIRO its Canadian sibling ) but one thing is often forgotten is that LAHSO is not a required ATC procedure , it is a Runway enhancement system aimed at increasing airport capacity ( read bring more money) and accepting it is completely left to the pilot . Many Airlines ( BA for instance , unless this has changed recently) have instructed their crews not to accept LAHSO or SIRO.
The first time I saw one being done was in Canada, landing on the jump seat of a Dash 8 seeing a MD11 landing and crossing our path at the midfield intersection .
As a controller my first reaction was,: what about if both of you had decided to go around ?... trying a visual separation right behind and in the wake of an MD11 at this speed and altitude ?
I know the chances of this occurring are very low, but in my days procedures did not include luck as a mitigating factor .


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Old 23rd Mar 2020, 07:29
  #37 (permalink)  
 
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Originally Posted by Pugilistic Animus
"At my home airport, it usually goes something like this. Plane A is cleared for takeoff and reads it back. Plane B is then told to line up. The hold bar is a bit further back than usual. At about the time plane B is just shy of the runway edge line, B is given the takeoff clearance. As B is reading it back, plane A is just getting off the ground. Once B reads back the takeoff clearance, C is told to line up, and so on."

Check Airman:
​​​​​​I must've misunderstood something what you describe sounds perfectly routine and normal.
though I can imagine that if most of the planes served are heavies and supers then there would a delay for wake turbulence. Although my mind's made up as far as LAHSO operations
​​​​​
May point was that my home airport has a decidedly easy pace, and we often find 2 planes on the runway at once. At busier airports (eg ORD, ATL, JFK), it’s not uncommon to have the clearance and be lined up, waiting to see the preceding aircraft’s nose leave the ground, before setting thrust.
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Old 26th Mar 2020, 05:42
  #38 (permalink)  
 
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I now understand what you mean Check Airman...Thanks for the clarification.
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