- The power or thrust of the engine. Reduced density will reduce the thrust and/or power that the engine can generate. Therefore, acceleration will be less, and the maximum TOM decreases.
- Density affects the TAS for a given IAS. Reduced density will increase the true airspeed for a given indicated airspeed. Getting to a higher TAS, consequently ground speed can lead to a tyre speed limited take-off.
- The angle of the initial climb. Since there is less thrust and/or power in low density, the angle of climb will reduce. Therefore, getting to the screen height will require a longer horizontal distance, which could not be enough to be clear of obstacles.
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