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Taxi Speed

Sat Feb 07, 2004 5:13 am

What is the taxi speed limit at a airport.

In Flight sim, i somtimes go 30/40mph, but i dont think that would be right on a real plane.
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RE: Taxi Speed

Sat Feb 07, 2004 6:04 am

For WN pilots, your company-mandated minimum taxi speed is V1 minus 5 kts.  Big grin
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RE: Taxi Speed

Sat Feb 07, 2004 6:39 am

Hawaiian airlines is probably V1 plus 5 kts. ! Have you seen them taxi?!

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RE: Taxi Speed

Sat Feb 07, 2004 7:04 am

In general taxi speed is around 20kts I thought.

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RE: Taxi Speed

Sat Feb 07, 2004 7:04 am

As far as I know, it's up to the good (or bad...) judgment of the captain.

On a sidenote, I can mention that I've raced a SAS 737-800 at GOT airport in a rusty Volvo... He was going about 30 mph on the taxiway, while we were on a gravel road next to it. Great fun!

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RE: Taxi Speed

Sat Feb 07, 2004 7:32 am

Yeah, normal taxi speed is probably somewhere in the 20-30 kt range, all depending on the captain's judgment and various other circumstances.

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RE: Taxi Speed

Sat Feb 07, 2004 8:09 am

The most basic rule-of-thumb is no faster than a man can walk in congested areas and no faster than a man can run in non-congested areas. It is left up to the pilot just what exactly that means.
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RE: Taxi Speed

Sat Feb 07, 2004 10:22 am

Airliners will usually taxi at higher speeds than light planes. You do not want to drag your brakes. It is possible to overheat them taxiing out for takeoff if you drag them. Solution, let the speed get up a little too high, then use brakes to bring it back down a little too slow. Repeat.

At idle thrust on level ground as the plane begins to accelerate, the engine becomes more efficient. Eventually you are not so much sucking air into it, but ramming it. Faster you go, the more it accelerates.

I've heard that an F-15 at idle, will become airborne in about 15000' of ground run if the brakes are not used. At idle!

Planes with IRS/GPS usually have accurate groundspeed readout at taxi.
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RE: Taxi Speed

Sat Feb 07, 2004 10:41 am

The MD11 /MD10's has taxi speed limits based upon the weight of the aircraft.

Straight ahead: over 400,000 lbs - 20kts
under 400,000 lbs - 25kts
45 degree turnoff: 15kts
high speed turnoff: 20kts
90 degree turn: 10kts

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RE: Taxi Speed

Sat Feb 07, 2004 10:58 am

On the apron the speed restriction is 10 knots. On taxiways the speed can go upto 20 kts.

If the apron is very small and requires sharp turns, There is a restriction of 5 kts to avoid rubber from the nose wheel from getting damaged. I believe this is more so in the case of the heavier A320 than 737's.
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RE: Taxi Speed

Sat Feb 07, 2004 11:28 am

On wide open taxiways we go up to 30kts.A maximum of 15kts in the apron area, and 10kts when doing 90 degree turns to limit scrubbing of the tyres.
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RE: Taxi Speed

Sat Feb 07, 2004 11:34 am

Hawaiian airlines is probably V1 plus 5 kts. ! Have you seen them taxi?!

The same goes for AQ. All AQ flights and HA's interisland flights taxi by my office and both taxi quite fast. Actually, most airlines taxi quite fast in HNL due to the long, mostly straight taxi to the Reef Runway. I remember the flight tracker on my CO flight saying 40 mph while we were taxiing out, which is about 34 kts.
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RE: Taxi Speed

Thu Feb 12, 2004 10:17 pm

Virgin Atlantic is never above 25 kts... Aprons are never above 10 kts.

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RE: Taxi Speed

Fri Feb 13, 2004 7:14 am

If a flight is running late and is in danger of not making its assigned arrival slot, I'm sure the taxi speeds increase. This is sometimes true with both airlines and cargo carriers.

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RE: Taxi Speed

Thu Feb 19, 2004 11:55 pm

Is there a max taxi speed when taxing back on a RWY?

RE: Taxi Speed

Fri Feb 20, 2004 1:19 am

Taxi speed considerations - B-747
Our policy in 747 is 20 knots maximum - 10 kts (or slower for turns) -
The concern is brakes overheat, and temperature of tires as well.
We use the INS ground speed to monitor the speed.
Brake temperature can be monitored on temperature gages.
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RE: Taxi Speed

Fri Feb 20, 2004 5:54 am

Usually between 10-20 kts. If you are on a straight taxiway and long way to go, give around 20. In 90 degree turns, don't exceed 10! I believe that its up to pilot how fast he goes when backtracking. As its a runway, you can give as much as you can get out from the engines, but you'll have to slow it somewhen down too so be smart.
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RE: Taxi Speed

Fri Feb 20, 2004 9:55 am

"The most basic rule-of-thumb is no faster than a man can walk in congested areas and no faster than a man can run in non-congested areas."

Well, FYI, Tim Montgomery's world record holding 100 meter dash of 9.78 seconds translates into just about 23 mph, which is just about 20 knots...

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RE: Taxi Speed

Fri Feb 20, 2004 1:26 pm

Oh, shoot, who was that safety guy at UND in the mid 1990's.

Anyway there was a story going around about him going off on some student pilot for taxing to fast. Turns out the instructor was a former Soviet Mig pilot getting his US ratings and the prescribed taxi speed on the Cadets, was very very slow for him!
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RE: Taxi Speed

Fri Dec 10, 2004 3:45 am

On the apron the speed restriction is 10 knots. On taxiways the speed can go upto 20 kts.

Watching Aircraft taxing at Mumbai,one can see the hurry some Pilots are in,leading to unnecessary Tire wear by heating up the Rubber Tires and unnecessary braking thereafter.

Especially the Indian Crew are in the biggest hurry [Probably they are the only guys getting to go home while the rest have to go to a hotel or turn around] that could explain the hurry.
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RE: Taxi Speed

Fri Dec 10, 2004 5:22 am

Way to dig this one out of the grave, HAWK21M.  Big grin
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RE: Taxi Speed

Sat Dec 11, 2004 2:16 am

Anyone know about the speed on the AMS taxiway to/from 18R-36L? It's very very long, in fact pilots sometimes complain on the PA that they've been assigned that runway, meaning almost 10 mins more of taxiing time...
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RE: Taxi Speed

Sun Dec 12, 2004 12:22 am

Ryanair = 50-100kts  Laugh out loud
Crazy, fast airline  Nuts
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RE: Taxi Speed

Mon Dec 13, 2004 1:08 pm

AA is usually good about taxi speed but one partivular flight i was on was delayed 2 hours due to weatehr. the pilot was prb doing 35-40kts taxi and put full thrust on while taxing, sped around the turn like a formula 1 racecar and let it fly.
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RE: Taxi Speed

Mon Dec 13, 2004 8:29 pm

LOL..AA at KSJC taxi like old men in walkers...

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RE: Taxi Speed

Tue Dec 14, 2004 2:41 am


Yeah we got a blast from the past with this one.

Anyway I mostly fly light props, and we taxi at about running speed, though there are some days where you just want to accidentally take off on the taxiway.
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