Good day everybody
For what it is on other various topics, the conclusion is it's not precise to say the range of this 767 as it depends mostly on the Cost Index setting.
I didn't find it in the manuals, but is there an aprox? is it from the real 767 (around 5,505 nm)?
I find the CI at 73 just fine BTW.
Personally, the longest flight I've done with this 763 is THU (Greenland) to HNL, making 4,146.6 nm in 8h 45m with 132,039.5 pounds of fuel and just enough fuel left to make a go-around.
I can't get down the CI from 73 or I just never could get FL350+ though, even with a reasonable payload weight.

For example, if I want to make it from SCL (Santiago de Chile) to SYD (around 6,200 nm), is it smart/alright to set your CI at whatever for climb and bring it down up there for an economical cruise at aprox .78 Mach to see how it does? Is this situation just experimental?

How do your long-range flights perform?

Thank you in advance.

I didn't find it in the manuals, but is there an aprox? is it from the real 767 (around 5,505 nm)?
I have found that its range appears to be around 5,800 - 5,900 nm when I use a CI of 0 (zero).

Personally, the longest flight I've done with this 763 is THU (Greenland) to HNL, making 4,146.6 nm in 8h 45m with 132,039.5 pounds of fuel and just enough fuel left to make a go-around.
I have done a flight from MEL to HNL (about 4,870 nm) and landed with about 15,000 to 20,000 pounds of fuel remaining. I started with 160,261 (100%) pounds of fuel and the 763 at almost Maximum Weight (412,000 pounds). The flight took 11.2 hours, I was using a CI of 0.

For example, if I want to make it from SCL (Santiago de Chile) to SYD (around 6,200 nm), is it smart/alright to set your CI at whatever for climb and bring it down up there for an economical cruise at aprox .78 Mach to see how it does? Is this situation just experimental?
I'm not sure if it is allowed in the real world, but I often takeoff with a CI of 0, increase the CI to 40 or 50 for the flight, then reset the CI back to 0 for the descent and landing. A CI of 0 seems to make the 763 climb to cruise altitude faster as well as descend faster. The TC and TD distances are shorter.

How do your long-range flights perform?
Mine perform very nicely. Never had any problems. I use ASE for real weather. I also set my STEP CLIMBS from ICAO to 2000 as this seems to extend the range a bit as well.

Mark

I see, thanks Mark

i found out that the 767-300 with pratt and whitney engines (Engine Rating PW4062) burns during cruise flight at mach 0,70 about 13,000 lbs per hour (plane not fully loaded with pax, freight and fuel), my take off weight was about 236.000 pounds + pax and freight weight (loaded with FSX passengers addon)



i took this data from a flight from EDDF to LEPA (distance 698 nm) + 1 hour reserve fuel. (37,000 lbs loaded on take off) in Frankfurt Main.

Hello there  :)

The first tings I do with new airplanes is to test their power limits.

Here are my results @ Testconditions (Standard weahter with 0 wind, very few payload (max 800 lbs incl. Crew):

Max Range: over 8.000 Nm possible
max Height: 48.000 - 50.000 ft (< 20K Fuel)
optimum Height: 38.000 - 40.000 ft
Maximum Speed between 27.500 - 28.500 ft, 518 GS
max Mach: 0.875 ~ 518 GS
Optimum Fuelburn: 60 Nm/1000 lbs

Maybe this helps with your furhter flight plannings  8-)

R. Aranda S. wrote on Oct 2^nd, 2011 at 7:41pm:

Good day everybody For what it is on other various topics, the conclusion is it's not precise to say the range of this 767 as it depends mostly on the Cost Index setting. I didn't find it in the manuals, but is there an aprox? is it from the real 767 (around 5,505 nm)? I find the CI at 73 just fine BTW. Personally, the longest flight I've done with this 763 is THU (Greenland) to HNL, making 4,146.6 nm in 8h 45m with 132,039.5 pounds of fuel and just enough fuel left to make a go-around. I can't get down the CI from 73 or I just never could get FL350+ though, even with a reasonable payload weight. For example, if I want to make it from SCL (Santiago de Chile) to SYD (around 6,200 nm), is it smart/alright to set your CI at whatever for climb and bring it down up there for an economical cruise at aprox .78 Mach to see how it does? Is this situation just experimental? How do your long-range flights perform? Thank you in advance.

if you fly long range 6000 nm the plane is taking off near to the maximum take off weight (MTOW) due to this fact, the fuel burning for the climb and level flight is higher, maybe you fly 2-5 degrees nose up in 36.000 fet. What i do to achieve the lowest fuel burn is to get higher than 33.000 feet, in comparison to 36000 fett (1000m higher) you get a significant lower fuel burn per hour with 3000 ft higher flight altitude, well sometimes its more intelligent to slightly reduce the mach speed to fly more fuel efficient.

On the routes EDDF - LEPA (palma de Mallorca) i never fly faster than Mach 0,70 (between FL33 and FL36) due to this procedure, i save a lot of fuel.