ISSUE DESCRIPTION
Description of the issue:
I’ve noticed that the fuel calculation for the remaining flight time is incorrect. It calculates the remaining flight time based on the fuel left in the tank and the fuel flow of just one engine. However, since the tank feeds both engines, the remaining flight time decreases at twice the actual rate.
Initially, the flight time indicated with full tanks aligns with the known performance of the PC-24. This made me wonder if the fuel flow shown on the fuel flow computer is accurate, while the values displayed below each engine might be incorrect or should potentially be half of what they currently indicate.
After doing some online research, I found that fuel consumption varies depending on the chosen cruise speed — approximately 1,079 LB/H for High-Speed Cruise and 869 LB/H for Long-Range Cruise, with these values representing the combined consumption of both engines.
Taking this into consideration, the fuel flow indicated on the fuel flow computer should be correct. However, the fuel consumption per engine should be half the value currently indicated and consumed.
If applicable, which aircraft is experiencing this issue:
PC24
[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?
FREQUENCY OF ISSUE
How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
- Every flight, independent of free flight or career.
REPRODUCTION STEPS
- Start a flight with PC-24
- Stabilize at any cruise altitude.
- Note the remaining flight time displayed on the fuel flow computer. Start a timer for 10 minutes and check the remaining flight time once the 10 minutes have passed.
- You will notice that 20 minutes of endurance have been deducted, effectively consuming twice the calculated amount of fuel.
YOUR SETTINGS
If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.
What peripherals are you using, if relevant:
- Not relevant.
[PC Only] Are you using Developer Mode or have you made any changes to it?
- No
[PC Only] What GPU (Graphics Card) do you use?
- Not relevant
MEDIA
Start of timer at stable flight conditions.
Both engines display a fuel flow of approximately 804 lbs/h. However, the fuel flow computer shows the fuel flow of the left engine only, while it should calculate based on the combined flow of both engines. At the start of the timer, the remaining flight time is indicated as 3:15 (H:M).
10 minutes later
Since the flight conditions were stable and unchanged, the remaining flight time should have decreased to 3:05 (H:M). However, this is not the case—the remaining time is 2:55 (H:M). In just 10 minutes of flight, 20 minutes of fuel endurance were consumed.
PC-24 Specifications (Based on Online Sources):
- Cruise Speed (High-Speed): ~440 KTAS (Knots True Airspeed)
- Long-Range Cruise Speed: ~360 KTAS
- Fuel Consumption (High-Speed Cruise): ~1,079 lbs/hour (combined for both engines)
- Fuel Consumption (Long-Range Cruise): ~869 lbs/hour (combined for both engines)
Source:
[END OF FIRST USER REPORT]
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