How does APG meet CASA obstacle clearance requirements without STODA?

APG performs a detailed, scenario-specific analysis using:

• Individual surveyed obstacles.
• A global terrain database.
• Aircraft-specific parameters (e.g., runway, slope, weight, thrust settings).

This method produces results similar to STODA but optimized for your exact aircraft and conditions. APG’s analysis includes:

• Acceleration altitude
• Takeoff thrust time limits
• Distant terrain beyond the survey area
• As weight is reduced for obstacle clearance, the required takeoff distance and climb gradient also decrease—mirroring the logic behind STODA.