What is the normal CF34 thrust rating and its APR thrust?

• A. 12,670 lbs / 13,790 lbs
• B. 11,500 lbs / 12,800 lbs
• C. 13,000 lbs / 14,000 lbs
• D. 12,000 lbs / 13,000 lbs

Answer: (A)

Understanding the two thrust settings—the normal thrust rating and the APR thrust—for the CF34. The normal rating is the standard takeoff thrust published for the engine, while APR thrust is a higher, approved power rating you can use for certain performance requirements, like takeoff performance calculations, under specific conditions and limited time. The numbers shown—12,670 pounds of thrust as the normal rating and 13,790 pounds as the APR thrust—match the official data for CF34 variants used on many regional jets, where the APR setting provides additional thrust beyond the normal rating. This pairing correctly reflects the relationship between the two values, which is why it’s the best choice. The other options don’t align with the typical published pairing of normal and APR thrust for the CF34.