The cruise speed of a boeing 767 is mach 0.86 or 568mph at 35000ft - but what is its max speed at any height?

Question

The cruise speed of a boeing 767 is mach 0.86 or 568mph at 35000ft - but what is its max speed at any height?

Answer 1

Increase altitude = increase top speed.

decrease altitude = decrease top speed.

Answer 2

I'm sure the max speed at any height would be at full throttle in a dive. This crash report recorded a 767 at Mach 0.99. This is like 760 mph.

Answer 3

604 mph ground speed at the highet altitude flown at commercialy

Answer 4

For B767

Mmo = 0.86 (FAA limit)

Vmo = 360 kts IAS

Now (assuming temperature decreases with height) if you fly the barber pole speed in a descent, the maximum TAS will occur at the altitude at which Mmo to Vmo crossover occurs, ie when M0.86 = 360 kts IAS. This is exactly 25,700 ft pressure altitude.

At ISA temperature (-35.9 C at 25,700 ft) this gives a TAS of 515.9 kts (= 593.7 mph).

If the temperature is above ISA, the speed could be higher.

Answer 5

ARE WE TALKING indicatedAIRSPEED actual AirspeedOR SPEED OVER THE GROUND?

next factor is throttle position

n1 is the maximum possible thrust from the engine

should never exceed 90%of n1

max speed is speculative

we coud be talkin max speed staying in its operational envelope or max speed in a crash dive just before you rip the wings off?

take a look at the specs of this plane at this link

http://www.simviation.com/rinfo747.htm

Answer 6

Well, the Boeing website gives the "typical cruise speed" of a 767-200ER at 35,000 as M 0.80. If they cruised at .86, I wouldn't have to slow down for them so often. (I think they often cruise at less than .80, b/c of weight and/or b/c of fuel economy issues.)

Answer 7

it cannot go over 35000 ft i checked on the net

Answer 8

600, but i guess if you decided to dive and take a chance of damage to the plane you could hit maybe a little over 750

Answer 9

767-200 - Max cruising speed 914km/h (493kt), economical cruising speed 854km/h (461kt). Range of basic aircraft with JT9Ds 5855km (3160nm), medium range version with CF6s 7135km (3850nm). 767-200ER - Speeds same. Range with PW4056s 12,269km (6625nm), with CF6s 12,352km (6670nm).

Answer 10

Best cruise speed of the 767 is Mach 0.80.