How long does a runway have to be for a 747 to take off?

Question

All series -100 -200 -300 -400

Answer 1

well i suggest you go to flightlevel350 and airliners websites actually around 3,300 or 3, 600 feet Runway or  3 KM runay will be a good length from there you may join free membership and ask a pilot :)

Answer 2

3000 meters should be fine for all configurations

Answer 3

Even with a full pax load there is difficulties knowing because you are talking about fuel load (is a huge factor) also the amount cargo on the Aircraft also. Wind direction , altitude etc. Plus most manufacturers only give the MTOW, for everything else Pilots usually use all the factors to calculate the estimated run.

MTOW

100/200-10,466 ft

300 -10,893 ft

400- 9,902 ft

400ER: 10,138 ft

8I- 10,138 ft

Answer 4

Depends on how heavy it is, and the temprature at the departing airport.  Airlines have charts that show the runway you are using, and how much weight you can carry depending on the temprature.  I have seen 747's in small airports like Harrisburg, PA, and also at larger airports like JFK, New York.  It just depends on how they are configured and what they are trying to carry.

Answer 5

It depends of the weight the aircraft is carrying but the accepted

distance is 3400 meters.

Answer 6

For no takeoff restrictions (IE max weight), the 747-100/200 requires about 10,500 feet (3190 meters). The -300 needs approximately 11,000 feet (3325 meters). The -400 needs about 9,900 feet (3020 meters).

Typically you won't see a 747 operate into an airport that has any less than about 8000' of runway simply because of the takeoff distance requirement, however when a airline does performance, they calculate a "load limit weight".

In other words, they take the runway available, the current weather and winds, and the aircraft performance then figure out how much weight they can add until they run out of runway. As a result of this, a 747-whatever (or any aircraft for that matter) can operate off of shorter runways- the just need to be lighter weight (IE less cargo and/or passengers).

Here's a dispatch release from a real 747-400 flight. Departure is from Kansai International Airport near Osaka Japan. See if you can figure out what any of it means... (I'll give you a hint. At the top is weather conditions. Below the dashed lines are runways to use, flap settings (10 degrees and 20 degrees) and the max weights allowed for each runway based on temperature (expressed as thousands of pounds 10.2 = 10,200), and at the bottom are corrections for headwinds and tailwinds.

~J

                             PRELIMINARY MGL          CALC 16/0215Z      .

.                                                        XRW  872.1          .

. 56F/13C                      

. 280/09                        SHIP  6305              STRUCTURAL LIMIT    .

. A3021 1023MB                  B-747-400              FLAPS 10        T1 .

.                                PW4056 T1              RWY 24R            .

.                                                        DRY                .

--------------------------------------...

.                                ** T1 **                                  .

--------------------------------------...

. RWY            24R      24L      06L      06R                        CLB* .

. CONDITION      DRY      DRY      DRY      DRY                            .

. FLAP 10                                                                    .

.        13C    881.1    818.9  (834.3 ) (768.1 )                    915.9 .

.        19C    870.7    812.5  (823.9 ) (760.9 )                    915.6 .

. HW (ADD)      1070    1300    1070    1290                            .

. TW (SUB)      6680    6830    6680    6850                            .

. QNH            260      190      260      190                            .

--------------------------------------...

.                                ** TO **                                  .

--------------------------------------...

. RWY            24R      24L      06L      06R                        CLB* .

. CONDITION      DRY      DRY      DRY      DRY                            .

. FLAP 20                                                                    .

.        13C    958.0    910.3  (913.3 ) (861.0 )                    965.3 .

.        19C    951.2    903.6  (906.5 ) (854.2 )                    965.0 .

. HW (ADD)          0    1460        0    1460                            .

. TW (SUB)      6380    6630    6380    6660                            .

. QNH            240      310      240      320                            .

--------------------------------------...

.  TAILWIND                      ( -07  ) ( -07  )                    KTS    .

--------------------------------------...

Answer 7

the 747 needs about 280 yards runway space

Answer 8

There are a lot of figures floating around on takeoff distance for a 747. It's worth remembering that the 747 has been built since 1967 and an upgraded model was introduced late last year in passenger and freight variants.

Each of these has slightly differing characteristics and the official Boeing takeoff roll before rotation is as short as 9902 feet or as long as 10893 feet. That is at maximum takeoff weight (MTOW).

But while the figure is not circulated as often, the 747 can take off from much shorter runways with a reduced MTOW, as short as 6,000 in Boeing figures. . Weight imposes a great penalty.

In reality, a lightly loaded 747 can take off from a runway that is as short as 4000 feet, but that does not allow for a safety factor, i.e. Boeing and aviation safety experts require a 50 percent safety factor to allow for engine failure before takeoff speed is reached

So while in theory, some 747 models have a spec calling for an 11,000 foot runway, a normal takeoff roll would be closer to 7200 feet.

But if you look at the Boeing ratings for takeoff roll for various airports you will see that there is a wide variance. That is because the Boeing spec is for an aircraft taking off at sea level at a "normal" temperature. After an airport reaches more than 1,200 feet altitude, the maximum weight  for takeoff starts to fall -- and takeoff roll can get longer. Higher temperatures also lead to different requirements for takeoff.

San Juan, PR can handle most aircraft including 747s with a runway just over 10,000 feet. It is the busiest airport in the Caribbean. But St. Maarten airport  also handles (or has handled 747s) from a 7200 foot runway. St. Maarten is an example of a airport where larger planes with long takeoff rolls can only use one of the runways because of low mountains creating an obstruction.

There are reports of 747s taking off from runways shorter than 4,000 feet, but not in revenue service and it can and has landed on much shorter runways than official requirements. it's important to remember that most runways have overrun areas that are not included in the official takeoff  runway availability, but does count for safety purposes, e.g. the pilot needs to abort the takeoff.

All of this is high theoretical because there is so much variation between aircraft models, airports and temperature.  what actually happens is that there is a specific calculation for each aircraft. You could as an example enter Mexico City as the takeoff airport, then you would need the temperature and you would get back from the calculation the maximum load including fuel.

At sea level and normal temperature range, aircraft runways of 10,000 feet are considered adequate for all commercial aircraft. Newark EWR with 11,000 feet at sea level is considered more than adequate for the longest overseas flights. But JFK with a runway of 14,512 feet provides a greater safety margin.

Airports at higher altitudes almost all have substantially longer runways because of the higher requirement. Denver, the mile high city , has a runway of 16,000 feet, which anticipates as much as a 10,000 foot takeoff roll.  The aircraft which might need a runway of 8,000 feet at sealevel could easily have a requirement o 11,000 at a higher temperature and altitude.

Airports which experience higher than normal temperatures, such as cities in the middle east, typically have runways ranging from well over 13,000 feet to more than 15,000 feet. Newer airports so far as possible plan for the longest runways practical.