FlightmechH3
Pre-takeoff checklist
- Joined
- Dec 30, 2021
- Messages
- 149
- Display Name
Display name:
FlightmechH3
What the heck? Fed Ex had to abort to keep from crashing into a SW flight?
Unless I'm completely off on my timestamp reading, did it take nearly a minute and a half after "cleared for takeoff" for the SWA bird to get rolling?
I'm used to getting takeoff clearance at the hold line, and immediately taking off; wouldn't ask for clearance if not ready.
But then again, a Skyhawk has a somewhat shorter checklist.
The other issue is as low as the weather was, why was he even in the ILS critical area while someone was on the final approach segment? The parallel taxiway (Alpha) has a ILS hold line one whole taxiway before the end of the runway (Foxtrot).
3 miles is nothing. In Europe they’ll clear you to land at like 500ft. London is notorious. I think the lowest we got a landing clearance was 200ft. As long as you have the separation, you’re goodBig iron guys—-normal to clear for t/o with heavy on 3 mile final? Especially with 1/4 mile vis??
My question really is: Is 3 mile final good enough separation for someone to get a take off clearance and not even be on the runway yet. Sure if the SW guy was line up and wait. But if not even on runway yet??3 miles is nothing. In Europe they’ll clear you to land at like 500ft. London is notorious. I think the lowest we got a landing clearance was 200ft. As long as you have the separation, you’re good
3 miles should be plenty. Planes are doing like 130-150kts on final so that’s like 2ish miles per/minute so you’ll have at least a minute to get into position. Not sure what kind of separation ATC needsMy question really is: Is 3 mile final good enough separation for someone to get a take off clearance and not even be on the runway yet. Sure if the SW guy was line up and wait. But if not even on runway yet??
That's my point. ATC shouldn't have even let them near the runway let alone takeoff with someone on the final approach segment when the weather is that crappy.You don't hold short of it unless ATC tells you to.
Respectfully disagree. Three miles is the minimum on a nice VFR day. With weather like this, everything slows down. Taxi speeds are slower, the turn to line up is slower. It won’t be SWA standard timing.3 miles should be plenty. Planes are doing like 130-150kts on final so that’s like 2ish miles per/minute so you’ll have at least a minute to get into position. Not sure what kind of separation ATC needs
Unless I'm completely off on my timestamp reading, did it take nearly a minute and a half after "cleared for takeoff" for the SWA bird to get rolling?
The SW aborted. That’s their track when they took off some minutes later.
I’d like to know how long it took SWA to roll after getting takeoff clearance. With that weather they would most certainly had to have done an anti-ice engine run up (10° or less and less than 1 mile visibility). I’ve never flown the 737, but I’m sure it’s like other large airplanes where that’s going to at least be 30 seconds for the run up, if not more. If we have to do an engine run up, we always let tower know that we’re going to need extra time on the runway on the initial call so they can plan for that. Didn’t hear SWA make that call and don’t know if it would have changed anything for the controller.Per Juan (blancolerio.com), SW was holding off the runway when cleared. I thought it was 30 seconds, but even 1.5 minutes doesn't seem so long to taxi into position and get rolling.
There's no way this incident is pilot error. It's all on ATC/tower, it seems to me. If Juan is right, the FedEx crew saved the day.
HHH
View attachment 114660
There was no abort for SW, according to the Juan Browne analysis. The Fedex pilot did call for SW to abort, which was remarkable, but the SW 737 continued with its takeoff.
I’d like to know how long it took SWA to roll after getting takeoff clearance. With that weather they would most certainly had to have done an anti-ice engine run up (10° or less and less than 1 mile visibility).
Do you think the SWA should have used some common sense and told ATC we are going to wait until the FedEX lands knowing they are going to be the ILS critical area when they entered the runway.. with a CAT 3 767 at three miles, SWA crew shpuld have gotten their heads out there butts and woke up as to the situation developing rather then blindly do what the controller cleared them to do,, situational awareness lost by SWA. I wonder if they even realized they had a 767 on top of them, Kudos the Fed EX crew nice save.The other issue is as low as the weather was, why was he even in the ILS critical area while someone was on the final approach segment? The parallel taxiway (Alpha) has a ILS hold line one whole taxiway before the end of the runway (Foxtrot).
There was no abort for SW, according to the Juan Browne analysis. The Fedex pilot did call for SW to abort, which was remarkable, but the SW 737 continued with its takeoff.
You’re absolutely right. I mistyped. 10 or less for EAI on, 3 or less for the run up (in the current plane). Thanks for pointing that out. I think I saw it was -1 there, so I’m sure they were having to do a run up.Dunno about SWA, but it was 3 degrees or less for us for the run-up (the 10 degrees or less was just for the engine anti-ice being on), but yes: 70% N1 for 30 seconds is what they wanted unless the plane started to slide. Of course, we'd always let Tower know if that's what we needed.
There was no abort for SW, according to the Juan Browne analysis. The Fedex pilot did call for SW to abort, which was remarkable, but the SW 737 continued with its takeoff.
One thing that isn’t being talked about (because it’s relativity inside knowledge) is that most of FedEx’s fleet (except for the Airbus) have HUDs installed. And in those HUDs, they have EVAS (Enhanced Vision Assurance System) which is basically an infrared camera that can be used to see through “stuff.”
Not really.That is interesting.
So during a CAT III ILS approach, does the FedEx first officer on a 767 look up through the windshield and watch the HUD, or keep eyes down on the panel as Juan Browne described in his video?
Was thinking the same thing. High SA, patience, and not blindly trusting ATC in low viz conditions saved a bunch of lives at PVD some 10 years agoDo you think the SWA should have used some common sense and told ATC we are going to wait until the FedEX lands knowing they are going to be the ILS critical area when they entered the runway.. with a CAT 3 767 at three miles, SWA crew shpuld have gotten their heads out there butts and woke up as to the situation developing rather then blindly do what the controller cleared them to do,, situational awareness lost by SWA. I wonder if they even realized they had a 767 on top of them, Kudos the Fed EX crew nice save.