I am able to reproduce this to a certain extent, but I think there’s something else going on here.
Oppo Find X2 Pro
Android 11 - April 2021 Security Patch
Samsung Galaxy Tab S4
Android 10 - March 2021 Security Patch
After the initial take off from LFMN, I’ve set my AP to hold 1000ft ALT (Tom had his ALT at 1200 on the screenshot), whatever HDG and also set throttle to 93%. I’ve seen the exact same thing: a few minutes over 2 hours was the remaining flight time. Then I went and checked the fuel flow which was 2420+ kg/h. Doing the maths, that was about right(ish).
After seeing the same as Tom, I’ve decided to play around with all this and set a steady +1800 fpm climb. Here is when things started to become interesting. My fuel flow started to decrease while I’ve gained more and more altitude. At the beginning of the climb, my remaining flight time stayed the same for a few minutes (2h2m) before it started to increase as well
As I’ve mentioned above, at around 1000 ft MSL, I’ve had over 2420 kg/h flow. After 10 mins of flight time and at 16000 ft , my flow was down at around 1900 kg/h with the remaining flight time being at around 2 h 26 mins.
Continuing the climb, at FL200, flow was 1630 kg/h and the flight time remaining was 2h47m.
I decided to level off at FL250 as my air speed started to decrease to around 160KIAS with the set VS.
After 18 mins of flight time, the remaining flight time was 3h 16 mins with a fuel flow of 1338 kg/h.
These combined together suggest that we could get 3.5 hours of flight time at higher altitudes.
I have checked what is it like right now on the 20.03 RTM, and I can confirm that the A-10 does exactly the same in the previous RTM as well [20.03.04 (1015) on a Redmi Note 7], though I haven’t had the A-10 downloaded before on the RN7 so it was downloaded right now before I’ve checked it.
I’m not sure if this was like this before though (never really paid attention :faceplam:). If it wasn’t, could it be the case that the fuel flow now takes into account the altitude? AFAIK, the higher the altitude the less the fuel consumption is? (I might be wrong on this though).