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Existing aircraft calculations unchanged.
Hawker 800A · Takeoff data
APR · V1 = VR · Zero wind and gradient · Without thrust reversers. Source: supplied Hawker Data PDF pages 2–19. Bounded linear interpolation of supplied Hawker chart data; not an approved flight planning tool.
Landing performance · N1 · Climb gradient · Runway slope corrections · Wind corrections · Anti-ice corrections · Wet/contaminated runway corrections · Other performance adjustments
Not supplied in the Hawker data. No values from another aircraft are substituted.
Calculated results use bounded piecewise-linear interpolation between published Hawker table points only. No extrapolation. When a required chart bracket is missing, results are Unavailable. This interpolation is not verified against approved AFM methodology; compare with approved AFM before any operational use.
Wind helper
How it works
The distance counts down from your groundspeed. If it drifts from the FMS, tap To fix and type the right distance. GPS altitude is satellite height, not your altimeter, and can be off a few hundred feet; switch Altitude to Manual to use the altimeter. Reference only.
Engine-out 2nd segment climb gradient from AFM Fig 4-31/4-32 at V2, gear up, read at airport + 1,500 ft, same as the takeoff climb limit. Uses the Takeoff tab's weight, flaps, pressure altitude, temp, wind and anti-ice.
Use the published VDP when the chart has one. This works it out from the height above touchdown at the glidepath angle you pick.
Work out flight time from distance
About this data
Linear interpolation of the AFM tables, the same way you would do it by hand: between weights, pressure altitudes, temperatures and wind columns. Speeds are rounded to the nearest knot (VREF/VAPP rounded up); distances are rounded up to the next 10 ft. Wet and contaminated runway numbers come from AFM Section VII advisory information. Tailwind is limited to 10 kt; headwind above 30 kt uses the 30 kt column. This is a reference tool built from the AFM, not an approved performance program. Confirm against the AFM before flight. Airport and runway data come from OurAirports; declared distances (TORA/ASDA/LDA) and NOTAMs are not included, so check the Chart Supplement.
Press and hold the image, then tap Save to Photos or Share.
Settings
· Airports: OurAirports + manual fixes · Weather stations: 2025 list
Reference tool only. Confirm with the AFM.