NebraskaFarmer

Perhaps this can be more clearly demonstrated with different take off runs on the same runway. Let’s say runway 25C at EDDF, a 4002m runway. Those are my settings: Gross weight: 64872kg Conf 1+F Air Cond: ON Anti-Ice: OFF Force TOGA: ON Surface: Dry Wind: 250/10 OAT: 19C Altimeter: 1015 Now for the full length of 4002m I get the following speeds: V1: 150 VR: 150 V2: 152 Now I shorten the TORA in the calculator to 2000m and get the following speeds: V1: 130 VR: 130 V2: 134 So the calculator is telling me that while all other parameters remain the same the aircraft can take off with speeds that are 20knots slower on a shorter runway. The perf calculator is just not working as it should.

There is definitely an issue with performance calculations on short runways. As shown in the first example by Deer-in-Motion above with a 2009m takeoff run. For such short runways it always gives impossible speeds. It is impossible to take off at those speeds without stalling. All the speeds are likely at least 10knots to low. To reproduce just calculate perf for any runway shorter than approx 2300m with a gross weight of at least 65000kg. It seems as if the perf tool adjusts the speeds down to a speed than can be achieved on the available TORA instead of saying TO not possible or TOGA required, higher flap setting, etc. Longer runways work fine as seen in the second example by Deer-in-Motion.

Runway 08L should have a MALSR lighting system. There are no approach lights at all in your scenery. See charts and supplement on Skyvector. I did not check any of the other runways. https://skyvector.com/airport/HNL/Daniel-K-Inouye-International-Airport