To be certified for CMNPS operation, the proportion of total flight time spent by aircraft between 50 and 70 NM off the cleared track is less than 1 hr in about _________ flight hours.

To be certified for CMNPS operation, the proportion of total flight time spent by aircraft between 50 and 70 NM off the cleared track is less than 1 hr in about _________ flight hours.

• A. about 2000 flight hours
• B. about 8000 flight hours
• C. about 4000 flight hours
• D. about 6000 flight hours

Answer: (B)

This question tests how a certification for CMNPS operation uses long-term flight experience to ensure precise navigation. The requirement sets a very tight limit: over a large block of total flight time, the actual time spent between 50 and 70 NM off the cleared track must be less than one hour. Framing it as “less than one hour in about X flight hours” means the ratio off-track time to total flight time should be extremely small, reflecting a high level of consistency in staying on the cleared route. Choosing about 8,000 flight hours makes sense because it yields a tiny fraction (1 hour in 8,000 hours), which aligns with the idea of requiring substantial overall experience with minimal off-track deviations. The other options would allow a larger share of off-track time relative to total hours, not meeting the intended level of demonstrated navigation discipline. So the best fit is about eight thousand flight hours.

This question tests how a certification for CMNPS operation uses long-term flight experience to ensure precise navigation. The requirement sets a very tight limit: over a large block of total flight time, the actual time spent between 50 and 70 NM off the cleared track must be less than one hour. Framing it as “less than one hour in about X flight hours” means the ratio off-track time to total flight time should be extremely small, reflecting a high level of consistency in staying on the cleared route.

Choosing about 8,000 flight hours makes sense because it yields a tiny fraction (1 hour in 8,000 hours), which aligns with the idea of requiring substantial overall experience with minimal off-track deviations. The other options would allow a larger share of off-track time relative to total hours, not meeting the intended level of demonstrated navigation discipline. So the best fit is about eight thousand flight hours.