Which statement correctly matches the JT15D-5 engine’s thrust values on a standard day?

Which statement correctly matches the JT15D-5 engine’s thrust values on a standard day?

• A. Static thrust is 2900 pounds while maximum thrust is 3100 pounds
• B. Static thrust is 2900 pounds and maximum thrust is 2900 pounds
• C. Static thrust is 2700 pounds and maximum thrust is 2900 pounds
• D. Static thrust and maximum thrust are both 2900 pounds

Answer: (B)

On a standard day, the JT15D-5 is rated to produce 2,900 pounds of thrust both when the engine is stationary (static thrust) and at its maximum rated performance. This means the published thrust value is the same regardless of whether the aircraft is just sitting on the ground or operating at the engine’s highest allowable setting, under ISA conditions. This pairing aligns with the engine’s data, where 2,900 pounds is the thrust figure specified for both static and maximum. The other options introduce either a higher maximum value or a different static value, which do not match the JT15D-5’s standard-day ratings.

On a standard day, the JT15D-5 is rated to produce 2,900 pounds of thrust both when the engine is stationary (static thrust) and at its maximum rated performance. This means the published thrust value is the same regardless of whether the aircraft is just sitting on the ground or operating at the engine’s highest allowable setting, under ISA conditions. This pairing aligns with the engine’s data, where 2,900 pounds is the thrust figure specified for both static and maximum. The other options introduce either a higher maximum value or a different static value, which do not match the JT15D-5’s standard-day ratings.