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Taxiing Speeds  
User currently offline9Y-ISA From Trinidad and Tobago, joined May 2001, 222 posts, RR: 1
Posted (12 years 7 months 1 week 1 day 11 hours ago) and read 6262 times:

Hey Airline Pilots,
When you guys are taxiing, is there an instrument that tells you how fast you are going? If so, what is the maximum taxing speed for your airline company other than ATC instructions and is it in knots?
Sometimes when i'm spotting at the airport, I see pilots taxiing faster than usual.

52 replies: All unread, showing first 25:
 
User currently offlineFlightSimFreak From United States of America, joined Oct 2000, 720 posts, RR: 0
Reply 1, posted (12 years 7 months 1 week 1 day 10 hours ago) and read 5442 times:

No clue for airlines here, but as a GA pilot, I have never heard an airliner being given taxi speeds nor have I received them myself, but I have been given instructions like "Taxi acrost runway 30 without delay, traffic on a 16 mile final.". That's the only speed data I've been told.


User currently offlineDavid B. From United States of America, joined Jun 2001, 3148 posts, RR: 5
Reply 2, posted (12 years 7 months 1 week 1 day 10 hours ago) and read 5424 times:

Well, I guess you can use the airspeed indicator over a certain speed. As for the speed itself, pilots can taxi at any speed they see safe. Some airports have speed restrictions but if you feel like doing 60 knots and it is safe, I don't see why not.


Teenage-know-it-alls should be shot on sight
User currently offlineFlightSimFreak From United States of America, joined Oct 2000, 720 posts, RR: 0
Reply 3, posted (12 years 7 months 1 week 1 day 10 hours ago) and read 5401 times:

The airspeed indicator wouldn't always be correct on the ground, because it measures your speed through the air, not on the ground...

User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4191 posts, RR: 37
Reply 4, posted (12 years 7 months 1 week 1 day 9 hours ago) and read 5377 times:

You can use your GPS, LORAN, RNAV, FMS, or INS to get a groundspeed readout on the ground.

Generally though it is teh pilots judgement and it is kept around 20 mph or slower.



Chicks dig winglets.
User currently offlineGoldenshield From United States of America, joined Jan 2001, 5970 posts, RR: 14
Reply 5, posted (12 years 7 months 1 week 1 day 3 hours ago) and read 5318 times:

the only good speedometer on the ground is your eyeball.

A wise man once wrote : "never taxi faster than a man can walk"




Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.
User currently offlineCeilidh From , joined Dec 1969, posts, RR:
Reply 6, posted (12 years 7 months 1 week 1 day 2 hours ago) and read 5307 times:

From their taxi speeds, it seems as if most Southwest, Ryanair and easyJet aircraft are piloted by Formula 1 drivers. Big grin  Insane

User currently offlineBlueShamu330s From UK - England, joined Sep 2001, 2865 posts, RR: 25
Reply 7, posted (12 years 7 months 1 week 1 day 2 hours ago) and read 5312 times:

XFSU is correct.

We normally don't exceed 15 kts, although I know someone who got up to 60kts on the long taxi out at Munich, and as a rookie trainee when learning to fly at Liverpool, we used to taxi to the disused site of the old airfield; there was one instructor who used to get airborne as we taxied around. Just 10 feet or so above the ground, we were hidden from the tower by trees and buildings so no-one ever knew; but a great laugh in a Tomahawk  Big thumbs up



So I drive a 4x4. So what?! Tax the a$$ off me for it...oh, you already have... :-(
User currently offlineApuneger From Belgium, joined Sep 2000, 3032 posts, RR: 12
Reply 8, posted (12 years 7 months 1 week 1 day 1 hour ago) and read 5293 times:

I think most airliner manufacturers impose taxi speed limits on their aircraft, isn't it?

I also heard that sometimes there are speed limits when making turns...

Anyway, I think most pilots do not exceed 25kts when taxiing to/from runway

Ivan



Ivan Coninx - Brussels Aviation Photography
User currently offlineJoge From Finland, joined Feb 2000, 1444 posts, RR: 40
Reply 9, posted (12 years 7 months 1 week 21 hours ago) and read 5260 times:

Especially those small jets, like 737s, seem to taxi sometimes VERY fast!  Wow!

-Joge



Bula!
User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3700 posts, RR: 34
Reply 10, posted (12 years 7 months 1 week 21 hours ago) and read 5262 times:
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the only good speedometer on the ground is your eyeball - Your eyeball is no good for taxi-ing a 747, when you are 30 feet off the ground.

I've taxied 1-11, A320's, DC10's, 747's and A340's the eyeball is only any good on 1-11's & A320's.

As a general rule you taxi no faster than 20kts in a straight line & enter a turn no faster than 10kts and even slower when the taxiway is wet.

Getting the speed right in a turn can be a matter of judgement because you can come to a stop in the middle of a sharp turn if you enter it too slowly. This phenomenon is more pronounced on a/c where the nose leg is angled fwd (e.g. DC10 & A320) as the leg wants to dig into the ground when it is turned away from straight ahead.



User currently offlineMaster Trijet From United States of America, joined Nov 2001, 41 posts, RR: 0
Reply 11, posted (12 years 7 months 1 week 20 hours ago) and read 5225 times:

I remember once on a SWA flight as soon as the 737-300 landed in indianapolis i noticed the extremely fast speed in witch it was taxig to the gate. I remember seeing a small pickup truck that by my judjegemt i believe it was going around 60MPH and looking througt the window i am noticing the 737 slowly passing the truck. what amased me was that i couldnt believe that we were taxing at i believe 70MPH and the pickup truck seemed like trying to catch up to the 737. looks like yea SWA pilots taxi like formula 1 racers


Merry christmas

MASTER TRIJET


User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3700 posts, RR: 34
Reply 12, posted (12 years 7 months 1 week 19 hours ago) and read 5218 times:
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A wise man once wrote : "never taxi faster than a man can walk" - Obviously he has never been to a major international airport. You'd be very popular with ATC taxi-ing at that speed !


User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6587 posts, RR: 55
Reply 13, posted (12 years 7 months 1 week 19 hours ago) and read 5219 times:

On the upper right hand side of our Navigational Display (ND), we have an indication of our ground speed, whether on ground or in the air and we use this to adjust our taxi speed. We go at around 10-15kts on a tight taxiway, or in the apron area and up to 30 on the open taxiway. To turn tight corners, like turning into the bay etc.. we taxi at 10kts max, otherwise the whole nosegear starts creaking and making a horrible noise, which wouldn't be too popular with the first class passengers. There would also be wheel scuffing, which isn't good at all.

User currently offlineEA CO AS From United States of America, joined Nov 2001, 13517 posts, RR: 62
Reply 14, posted (12 years 7 months 1 week 18 hours ago) and read 5181 times:
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Someone once made up what was a bogus pre-taxi checklist for a Southwest B-737, which included the following:

"...brakes released...transponder set...flaps set...altimeter set and checked...seatbelt sign on...throttle full open...V-1...taxi...."



"In this present crisis, government is not the solution to our problem - government IS the problem." - Ronald Reagan
User currently offlineGo Around From , joined Dec 1969, posts, RR:
Reply 15, posted (12 years 7 months 1 week 15 hours ago) and read 5162 times:

Interesting you should mention Indianapolis. When you land to the Southwest, it is literally nearly 2 miles from the end of those runways to the terminal. In that instance, with no other planes in close proximity, a fast taxi there is safe and prudent.

So I'll open up the can of worms, it never ceases to amaze me to watch the way Southwest (Airlines this time) taxis. They zip around at warp 9, only to hold at another intersection or get in the long line at takeoff. They remind me of drivers who floor the gas pedal as soon as the light turns green, just to have to stop at the next red light a block away, and they do it over and over.

There are prudent times, like above, when a fast taxi is just fine, but I do think Southwest's speeds will bite em' some day with either a runway incursion or some problem leaving the taxi way. By definition taxiing is a critical phase of flight and needs to be approached that way with caution and close attention.



User currently offlineBoeing nut From , joined Dec 1969, posts, RR:
Reply 16, posted (12 years 7 months 1 week 13 hours ago) and read 5163 times:

Well, from what I understand, Southwest pilots get a bonus if they arrive at the gate on time. So if they are just a little bit behind, they will try to make up the time on the ground to the gate. Part of me doesn't approve of this as this can create an unsafe condition. I have seen it many times at STL.

User currently offlineMdsmith11 From United States of America, joined Jul 1999, 194 posts, RR: 1
Reply 17, posted (12 years 7 months 1 week 12 hours ago) and read 5171 times:

Where is the most dangerous place at the airport?

Between a Southwest pilot and his/her gate!


User currently offlineConcorde1518 From United States of America, joined May 2001, 746 posts, RR: 0
Reply 18, posted (12 years 7 months 1 week 11 hours ago) and read 5140 times:

I also notice that after an aircraft from a major airline arrives at the gate, it turns off the engies after about 15 secs, whereas Southwest pilots haul into the gate, and slam on their brakes at the last minute, while turning off the engines! Taxi with them is great, because I love to see that wing bounce up and down, its really fun to point out to first time WN fliers!  Smokin cool
I fly on WN a lot, so for my safety's sake, I really hope it doesn't bite them!


P.S. I thought the 737 had a taxi speed gauge on the overhead panel by the pressurization gauge and the starter switches.

Merry Christmas!

Aaron


User currently offlineGo Around From , joined Dec 1969, posts, RR:
Reply 19, posted (12 years 7 months 1 week 9 hours ago) and read 5116 times:

-P.S. I thought the 737 had a taxi speed gauge on the overhead panel by the pressurization gauge and the starter switches. -

I've flown this plane with two airlines, and I've never seen such an item, but that's not to say some airlines might not have it, but I've never heard of any such device.

As for engine shutdowns, it is SOP for most 737 operators to shut down the #2 engine after 3 minutes idle time after landing to conserve fuel. It's perfectly safe, and a common practice. At the gate, we wait for the N1 sections to show zero % before turning off the anti collision light to let the ground crew know the engine fuel might be off, but the blades are still spinning.

Now, as for your comment about hauling into the gate and slamming on the brakes....no arguing with that. I think that GO GO GO motto will bite them some day, rushing causes errors. They've already narrowly escaped a disaster a number of times, and no matter what they might want to label it, Burbank WAS an accident in every sense of the word. I'll give them credit, their spin meisters are the best, they come out smelling like roses no matter what happens. But I must admit, seeing that smug little attitude of theirs brought back to a bit of reality this holiday travel season with their extraordinary long lines throughout the country has been a hoot.



User currently offlineERJPLT From United States of America, joined Nov 2001, 22 posts, RR: 0
Reply 20, posted (12 years 7 months 1 week 6 hours ago) and read 5112 times:

Seriously guys, there are no such things known as taxi speed indicators. There is also no limitations as to taxi speeds. Know why? Generally the taxi speed is not up to you, usually you are taxiing as fast as the other traffic around you. Obviously you can not pass someone or beat someone to a turn since you are just a puppet to ATC. You are taught from your first day as a student pilot to taxi at a speed of a brisk walk. This is the same day you are trying to taxi by turning the yolk too. You can use that as a basis by which most pilots will go by. Do they use this....no.....but each situation dictates how fast they will taxi.

If you are at your hub and familiar with the field, then yes, you may taxi a little faster with traffic permitting. On the other hand, after you land at Newark at night with heavy rain, you bet your butt you are going to taxi slow because the Captain is steering and outside the aircraft while the FO is writing down directions and finding the way on the airport diagram. Each situation calls for a different taxi speed.

On another note, it is not a race to the gate as it may seem with SWA. Whether taxiing in or out the flight deck is running checklists, running new numbers if the runway changes, reprogramming the FMS if a reroute occurs, etc....They are busy up there. You know the time you worry about how fast you get in the air is the time you forget to put the flaps at TO configuration. ie. NWA DC-9.

Lastly, the pitot tube will not register on the ground, why, well airspeed indicators in commercial aircraft will not begin to react until 40 knots is reached at the lowest. You dont even make a call in most till 80 or 100. A gust of wind can register in your a/s indicator but a taxi should not. Regardless, guess what happens in most airplanes when you hit 25 knots or more........the ground spoilers open!!!!!!!!!!!I think that may prevent you from going much faster.

To CX flyboy- are you really a pilot- you talk the talk but I believe that I saw you said you flew a 74 or something of that caliber? You fly a 74 and you are telling me you rely on the INS to display a ground speed and thats how you taxi. Do you know what ground speed is?
No, okay, I'll tell you......ground speed is the relative speed the aircraft is travelling in relation to the ground below you. Thus ground speed is a measurement that is taken in the air, what does this account for, well how about wind direction, speed, your course, and your true airspeed. So your telling me you account all of this into determining how fast you should taxi? Why dont you just save time and taxi as fast as the others around since your speed means nothing if the plane ahead is taxiing slower.

Not trying to be rude but the person asked for an honest answer and he has been told everything from imaginary instruments to rotations on taxiways........
ERJPLT


User currently offlineBarney captain From United States of America, joined Nov 2001, 926 posts, RR: 13
Reply 21, posted (12 years 7 months 1 week 3 hours ago) and read 5067 times:

ERJPLT,
Hate to say it but CX is not making this up. The IRS's don't care whether you're on the ground or not, they sense movement and display it as ground speed. And in fact it does work fairly well. Zero kts at the gate, as soon as you release the brakes, it starts indicating speed.
Now for all these comments about fats taxi at SWA......... Big grin

Really though, I absolutely understand that we have that reputation, but it really is old-school. It seems to be a throw-back to the guy's doing the "Texas-two-step" all day in a -200. A vast majority of the guys don't subscribe to that kind of thing (stop laughing), but unfortunately, the 1% who do are the guys that stand out.



...from the Banana Republic....
User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3700 posts, RR: 34
Reply 22, posted (12 years 7 months 1 week 3 hours ago) and read 5062 times:
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ERJPLT

Why dont you just save time and taxi as fast as the others around since your speed means nothing if the plane ahead is taxiing slower. Quite obviously you have never taxied a 747 or anything else of that size. You taxi a 747/DC10/A340 too fast and you'll find yourself going staight on at the first turn.


User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6587 posts, RR: 55
Reply 23, posted (12 years 7 months 1 week 3 hours ago) and read 5058 times:

ERJPLT,

I do not tell others how other aircraft fly, because frankly, I don't know. What I do talk about is how the 744 works, because I am qualified to. You have probably never flown a 747-400, so please don't try and ridicule me or speak to me like I'm an idiot or a liar unless you know for sure what YOU are talking about. No doubt you are a qualified pilot as well, and I will believe everyword you tell me about the aircraft you fly, or have flown, but not about the 744, if you've not flown it.


User currently offlineBarney captain From United States of America, joined Nov 2001, 926 posts, RR: 13
Reply 24, posted (12 years 7 months 1 week 2 hours ago) and read 5048 times:

BTW ERJ
On some large a/c (1 AA767 I was jumping on), there in fact IS a taxi speed indicator located on the upper left CRT. It becomes very difficult to determine actual speed from 2-3 stories up. Brake energy during long taxi's and blown fuse plugs may not come in to play in a RJ,(I assume that's what you fly) but they do on heavy's. Check your facts b4 you go spouting off.



...from the Banana Republic....
25 Railmatt : I swear at DFW where the taxi distances can be miles and miles we have hit 40 or so on AA several times. I like it when they "pour on the coals" for t
26 Go Around : Hey Barney, I'm curious (seriously, this is a new one to me), why would a heavy aircraft need a taxi indicator on their CRT and just not use their GS
27 Barney captain : Go Around, Great post. Ok, Ok, it probaly is a higher percentage. But it really IS only the old hats who still seem to be in the "we only have 10 minu
28 Hkgspotter1 : How strange, the expert ERJPLT has not replied. I wonder why ?? You tell him Flyboy !
29 Fly_emirates : In dubai airport it varies .. if you are taxiing to take off from 12L, then the aircraft will taxi faster than it would if taking off from 30L
30 ERJPLT : Ya, I am really sorry that I couldnt get back to the reply but I had this thing called, um......work. Do you know what that is? You see Hong Kong guy,
31 Cx flyboy : ERJPLT, You were never told anything about taxi speeds whilst in training? What the hell kind of training did you do? In a large aircraft, taxi speeds
32 Go Around : "Hey center, how about direct for Southwest 123?".... OK OK, I just couldn't resist one more Barney, I better quit while I'm ahead, I know my airline
33 Hkgspotter1 : Hey ERJPLT, Tell me when your in Hong Kong. I'll make a point of showing you a great welcome from the spotters here. YOU IDIOT. Kind Regards Daryl Cha
34 XFSUgimpLB41X : This confirms ERJPLT has never sat in the cockpit of a heavy...much less tried to taxi one. It's alot different up there from the lawn dart, bucko.
35 ERJPLT : Ya, planespotters, a big call for them in the industry. I will let you know when I get to Hong Kong.......maybe we can spot together and look at some
36 Hkgspotter1 : FLIGHTSIM 2002. Great game. Maybe ERJPLT should try it one of these days. I may learn how to fly.
37 Cx flyboy : I think plane spotting is great. I love aviation and no-one can fault me for it. If nothing it makes you a better pilot. I also mess around on flights
38 Seagull : Just a few points of clarification here: 1. On some aircraft (like the MD-11) there is a display of the "taxi speed" on the speed tape. This is GS off
39 Seagull : Oh, as to the comment by ERJ about "EICAL" (must be an ERJ acronym, we don't use that!), while the MD-11 will, of course, automatically alert us if a
40 Seagull : CX, Do you get over to the Kangaroo Pub in HKG ever? Maybe we should meet there next time I get a layover in HKG? Tried to say hello to the boys upsta
41 Cx flyboy : Seagull, Yes that would be good! I sometimes visit the Kangaroo Pub, but not very often. Sometimes if I have been to the union offices, but they are v
42 Fearofflying : On Southwest's fast taxiing, heres a direct quote from Southwest's website about their taxiing speeds: "Southwest Airlines has the shortest taxi-in ti
43 Post contains images Barney captain : Thanks, but the data is a little slanted. The average is driven down beacause of big operations at smaller airports where we don't have to compete wit
44 VC-10 : I was not trying to start a fight. I suggest you re-read your post, the way it is phrased that is exactly what you were try to start. With the attitu
45 Post contains images AviationIvi : ERJPLT: to CX-flyboy: by the way, visitors´ terrace at terminal 1 at FRA was reopened (opens at 10a.m.), t2 is still closed Regards from FRA Ivi
46 XFSUgimpLB41X : ERJ- do you have 40 hours of DC-10-30/40 and 747-400 training from NW? hmm? Nope... thank you. I talk about things that i know about, and not things t
47 Post contains images BlueShamu330s : Why don't we just leave ERJPLT to get on in his own blinkered little world, although if he really is a commercial ERJ pilot, I wonder how he manages t
48 Dms426 : Durrr, of course there are taxi speed indicators. I believe it was in NY maybe 20 years ago that a 747 hit the terminal because it was taxiing to fast
49 Lehpron : Does Concorde have a camera system attached to it's nose wheel strut to aid pilots while taxing?
50 Cx flyboy : The 777-300 does.
51 SUDDEN : This was a amusing topic. To read adults (I guess) posts about what they do for living, and not do, according to others.
52 RayChuang : I think visually looking at taxiing speeds is extremely deceptive, to say the least. I've seen at SFO where an A320 or 737 looks like it's taxiing rea
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