12.102 Take-off Performance

12.102.2 Given typical performance data, demonstrate the ability to determine TODR

To determine Take-Off Distance Required (TODR), use the aircraft’s performance charts or data and apply any required corrections.

Basic Method

1. Start with the aircraft’s basic take-off distance
From the POH/AFM chart, using:

• Aircraft weight
• Pressure altitude / density altitude
• Temperature

This gives the base take-off distance.

2. Apply corrections for conditions, such as:

• Headwind / tailwind
• Runway slope
• Runway surface (grass, wet, soft, sealed)
• Flap setting
• Obstacles / clearway requirements

3. Add safety factor if required
(As specified by operating rules or manufacturer)

Example