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At What Speed Should Aircraft Taxi?  
User currently offlineLAX From United States of America, joined Dec 2000, 2290 posts, RR: 3
Posted (13 years 6 months 4 weeks 16 hours ago) and read 3908 times:

I remember seeing a story on CNN recently involving this subject of airliners taxiing way too fast.....so as to reduce delays. I think the airline they mentioned was Continental (but I'm not sure).

What do you think? Do jets taxi at too high a speed, thereby endangering the plane & pax?

And is there an FAA speed limit for planes while on the ground?

28 replies: All unread, showing first 25:
 
User currently offlineGF-A330 From United Kingdom, joined Apr 2001, 1644 posts, RR: 2
Reply 1, posted (13 years 6 months 4 weeks 16 hours ago) and read 3849 times:

i do not think aeroplanes taxi fast....i think it is opposite.....they taxi slow !


the time it takes to taxi to the runway and take off is ages


User currently offlineLAX From United States of America, joined Dec 2000, 2290 posts, RR: 3
Reply 2, posted (13 years 6 months 4 weeks 16 hours ago) and read 3834 times:

I'd have to agree with you, GF-A330. I think it's too slow most of the time too.

But there was a story on the news a while back about some pilots moving way way too fast on the apron.

Just wondered what the official guidelines were on the subject....if there are any.


User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3702 posts, RR: 34
Reply 3, posted (13 years 6 months 4 weeks 15 hours ago) and read 3829 times:
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The guidelines I use for taxi-ing for maintenance is, 20 kts max on the straight and a max of 10 kts for a turn (slower if wet). Don't forget the brakes are pretty effective, they are designed to stop a few hundred tonnes of aeroplane from 100+ kts, so stopping a a/c during taxi-ing is no problem. In reality they are too fierce during taxiing.

User currently offlineMls515 From United States of America, joined Jun 2000, 3076 posts, RR: 9
Reply 4, posted (13 years 6 months 4 weeks 15 hours ago) and read 3815 times:

I was on a Ryanair 737 that was taxiing pretty quick at BHX and the bumps were pretty severe. Maybe it should depend on "road conditions"?

mls515


User currently offlineIndianguy From , joined Dec 1969, posts, RR:
Reply 5, posted (13 years 6 months 4 weeks 13 hours ago) and read 3793 times:

A local airline has a bad reputation for taxiing fast, esp. when their flights are delayed.

Some time back our aircraft (a 737-400) was taxiing so fast down the taxiway parallel to the runway, that i for a moment thought the pilot was going to take off from the taxiway itself!

I heard from friends in the US that Southwest pilots taxi like crazy!


User currently offlineDazed767 From United States of America, joined May 1999, 5498 posts, RR: 51
Reply 6, posted (13 years 6 months 4 weeks 13 hours ago) and read 3782 times:

I was on a jetBlue flight and according to the map, we were doing 25mph. I saw a SW 737 taxiing out at MCO, and let me tell you they were movin! When it went to turn on to the runway, the whole plane wobbled side to side. Pretty funny if you ask me. Airlines like southwest do that because the pilots are paid by the (mile?). So they get from point A to point B asap.

User currently offlineSingapore 777 From Australia, joined May 1999, 1016 posts, RR: 3
Reply 7, posted (13 years 6 months 4 weeks 10 hours ago) and read 3753 times:

Why don't you go and see the Malaysian Airlines 737 pilots at Changi Airport? I thought they were a little too fast. This also applies to Singapore A310 and sometimes SilkAir A320 pilots!!!

A340 taxies rather slowly. The brakes feel a bit spongy too.


User currently offlineTurbulence From Spain, joined Nov 1999, 963 posts, RR: 20
Reply 8, posted (13 years 6 months 4 weeks 9 hours ago) and read 3744 times:

I would not be able to assure it, but I read in an aviation magazin that although it might "look" slow, and, the bigger the airplane, the slower the effect -does it have anything to do with Singapore 777's comment?-, the actual taxi speed can be of 100 Km/h (aprox 60mph).

Any professionals?

Best turbulences


User currently offlineApuneger From Belgium, joined Sep 2000, 3032 posts, RR: 11
Reply 9, posted (13 years 6 months 4 weeks 8 hours ago) and read 3717 times:

Turbulence: where the h@!ll did you read that? Taxiing at 100km/h????

I think the only place where this is possible is at the high-speed taxiways, after landing (or do they also use them before takeoff?).

I think that, in normal circumstances, the taxispeed stays below, let's say 25 knots.

Ivan



Ivan Coninx - Brussels Aviation Photography
User currently offlineAlitalia744 From United States of America, joined Mar 2000, 4759 posts, RR: 44
Reply 10, posted (13 years 6 months 4 weeks 7 hours ago) and read 3708 times:

I remember one time on a TW 747 in ATH, during taxi, the pilot extended all wing spoilers to slow the aircraft down. It was ages ago, so I dont remember all details (runway/etc) but do remember the wings were a rocking!




Some see lines, others see between the lines.
User currently offlineKonaB777 From , joined Dec 1969, posts, RR:
Reply 11, posted (13 years 6 months 4 weeks 7 hours ago) and read 3702 times:

American pilots have a reputation for taxiing too slow, United pilots from what I remember taxi at a good clip, but not too fast to create a hazard.

User currently offlineHNL747 From United States of America, joined Jul 2000, 34 posts, RR: 0
Reply 12, posted (13 years 6 months 4 weeks 6 hours ago) and read 3686 times:

Most airport taxiways are designed to accomodate taxiing speeds of up to 20mph. When airlines exceed the limit on a consistent basis the pavement is subject to accelerated deterioration and shorter operational life -- this results in higher refurbishment and replacement costs.

User currently offlineNdebele From Germany, joined Apr 2001, 2901 posts, RR: 22
Reply 13, posted (13 years 6 months 4 weeks 6 hours ago) and read 3681 times:

With my car, speed limit on the ramp is 30 km/h. Once I was in a hurry, I had about 50 km/h, when suddenly a LH 737 was crossing my way much, much faster!

User currently offlineAfitch7881 From United States of America, joined Aug 2000, 816 posts, RR: 1
Reply 14, posted (13 years 6 months 4 weeks 4 hours ago) and read 3666 times:

It seems that Southwest pilots taxi at rather fast clips. Maybe something to do with their famous 25-30 minute turn arounds!

Eric


User currently offlineFanoftristars From United States of America, joined Jul 2000, 1611 posts, RR: 5
Reply 15, posted (13 years 6 months 4 weeks 4 hours ago) and read 3659 times:

I have watched a lot of aircraft take off lately from SLC, and I noticed that the aircraft that were taxiing fast were consistantly Southwest. I also noticed that the controllers would often give them takeoff clearence way before they got to the end of the runway. They made the turn onto the active pretty fast and off they went whithout hesitation.

What airports have a lot of high speed taxiways? I noticed last time I was at DEN, we landed and turned off the runway and taxied for what seemed like forever, but we were going really fast along the ground. I'm not totally sure what runway, but it was to the west of the main terminals and we came in from the north.



"FLY DELTA JETS"
User currently offlineRoberson From United States of America, joined Dec 2000, 156 posts, RR: 0
Reply 16, posted (13 years 6 months 4 weeks 4 hours ago) and read 3658 times:

It seems that Frontier pilots taxi quickly. At MCI prior to departure to DEN, we were cruising down the taxiway and suddenly the pilot slams on the brakes and engages the thrust-reversers to slow the plane. It didn't seem like we were going any faster than usual, though. Guess he was trying to save the brake pads. It was kinda neat, though.

User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3702 posts, RR: 34
Reply 17, posted (13 years 6 months 4 weeks 3 hours ago) and read 3648 times:
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Singapore 777,

A340 brakes are just fine.

Alitalia744,

At Taxi speed spoilers will have no effect. The wings would be rocking from the uneven taxiway and the shock struts absorbing the uneveness


User currently offlineZoomer From Netherlands, joined Dec 2000, 218 posts, RR: 0
Reply 18, posted (13 years 6 months 4 weeks 2 hours ago) and read 3639 times:

Southwest are always in a hurry. Sometimes they're going so fast that they run off the end of the runway Big grin
Seriously though, you will find that generally those cheapie companies who rely on short turnarounds tend to be the faster taxiers. Didn't help us on my last SWA flight from STL to IND. We spent more time waiting in line for departure at STL than the flight time to IND!!


User currently offlineJet Joc From , joined Dec 1969, posts, RR:
Reply 19, posted (13 years 6 months 4 weeks 1 hour ago) and read 3627 times:

Delta pilots taxi at a good pace. 10 knots or so.

User currently offlineAlitalia744 From United States of America, joined Mar 2000, 4759 posts, RR: 44
Reply 20, posted (13 years 6 months 3 weeks 6 days 22 hours ago) and read 3607 times:

That was my point exactly, we were going much faster than taxi speed....that was the only aircraft I'd been on where the spoilers were extended on the ground before we ever got in the air....

and yes, I've seen rocking wings at every airport I've been at...



Some see lines, others see between the lines.
User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4223 posts, RR: 37
Reply 21, posted (13 years 6 months 3 weeks 6 days 21 hours ago) and read 3598 times:

The bigger the airplane, the harder it is to tell how fast you are going. In a large widebody you can be going upwards of 40 kts and barely even tell. Reccomended speed is 25 kts.


Chicks dig winglets.
User currently offlineAfitch7881 From United States of America, joined Aug 2000, 816 posts, RR: 1
Reply 22, posted (13 years 6 months 3 weeks 6 days 21 hours ago) and read 3588 times:

I might be wrong, but my understanding is that spoilers at the time of landing dont really slow the aircraft down as much as they keep the aircraft down on the runway. They put presure on the plane to keep the plane on the ground and enables it to slow down.

Eric



P.S.

I think I worded it a little wrong, but hopefully you get what I am saying.


User currently offlineGUNDU From , joined Dec 1969, posts, RR:
Reply 23, posted (13 years 6 months 3 weeks 6 days 15 hours ago) and read 3567 times:

On Saturday @ SIN I saw 9M-MMQ speeding to gate F31  Smile/happy/getting dizzy . SilkAir A320's 9V-SLD and SLB were also speeding  Smile/happy/getting dizzy .


GUNDU


User currently offlineSingapore 777 From Australia, joined May 1999, 1016 posts, RR: 3
Reply 24, posted (13 years 6 months 3 weeks 6 days 14 hours ago) and read 3561 times:

GUNDU: Maybe you meant F30, the corner gate didn't you? F31 is usually used for big jets like the Boeing 747 or 777.

25 VC-10 : Alitalia744, Nobody would taxi at speeds where the spoilers would be effective. I think what you saw was the pre-flight control check for full and fre
26 Post contains images LAX : If the plane's wheels come off the ground while in the middle of a turn, do you think it's going a wee bit too fast?
27 XFSUgimpLB41X : Spoilers do not slow the airplane down, they kill all the lift on the wing. If the spoilers are deployed on the ground it is only because they are cyc
28 L-188 : This really happened. We had about two inches of ice on our parking stand with about 1/4 inch of water sitting on top of it....Very slick. Then our 72
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