How is the combined FDP and RAP determined when you are called?

• A. RAP + 16 hours
• B. RAP + Table B + 4 hours
• C. Table B + assigned trip show time
• D. Most restrictive of the following: RAP + 16 hours; RAP + Table B + 4 hours; Table B + assigned trip show time

Answer: (D)

When you’re called, the combined FDP and RAP is set by choosing the most restrictive result from several rule-based calculations. The rest you have accumulated (RAP) interacts with different limits to cap how long your flight duty period can be. The three potential limits to compare are: RAP plus 16 hours, RAP plus Table B plus 4 hours, and Table B plus the assigned trip show time. You don’t pick the largest or the smallest alone; you take the smallest value that any of these calculations allow, because that represents the strictest constraint you must honor to manage fatigue safely. This is why the correct approach is to use the most restrictive of the three calculations.