Performance desk · dispatch the take-off

Can you assemble a complete take-off release?

For every supplied graph/table, verify aircraft, engine, thrust, flap, runway start, slope, atmosphere, wind, surface, system status and units. Read field-length mass from the run/go/stop requirements, climb mass from the required gradient, obstacle mass from the net path, tyre mass from the ground-speed boundary, and brake mass from the energy limit. The structural MTOM remains an independent ceiling.

Read each limiting mass

For every supplied graph/table, verify aircraft, engine, thrust, flap, runway start, slope, atmosphere, wind, surface, system status and units. Read field-length mass from the run/go/stop requirements, climb mass from the required gradient, obstacle mass from the net path, tyre mass from the ground-speed boundary, and brake mass from the energy limit. The structural MTOM remains an independent ceiling.

Short or adverse runways often make field length restrictive; hot/high airports and reduced thrust can make climb restrictive; close/high obstacles can make the net path restrictive; high density altitude and tailwind can bring tyre speed into play; high mass, high V1 and hot brakes can bind brake energy. These are tendencies to explain the result, not permission to omit any check.

Interpolate, choose, then read the speeds

For a linear table, interpolate within each bracket: result = lower value + fraction × (upper − lower). If two independent axes require interpolation, follow the published sequence or method and retain units. Do not extrapolate outside the authorised domain. Select the lowest applicable mass after all prescribed corrections.

Retrieve V1/VR/V2 at the actual mass with the selected approved thrust and flap case, applying the table’s wind/condition corrections. Find the permitted assumed temperature only if that method is eligible and supports actual mass. After a rejected take-off, read cooling/inspection requirements from the appropriate brake-energy data. A calculation is incomplete if the mass fits but the speeds or next-flight brake state are missing.

Original speed table for the training desk

For the interactive desk’s fictional aircraft, linearly interpolate between these actual-mass rows. This table belongs only to the synthetic normal-thrust/flap case in the lab. There is no additional wind correction in this exercise. A different real thrust/flap case requires its own approved speed schedule.

Can you make the performance decision?

Four original questions. Work from the stated conditions and review the reasoning.