What is the engine takeoff thrust time limit under OEI conditions?

What is the engine takeoff thrust time limit under OEI conditions?

• A. 3 minutes
• B. 10 minutes
• C. 15 minutes
• D. 20 minutes

Answer: (B)

When a takeoff is attempted with one engine inoperative, the aircraft is allowed to maintain takeoff thrust on the remaining engine for a limited period. This OEI takeoff thrust time limit exists because running the single engine at takeoff thrust generates more heat and stress, and you need to have a defined window to achieve a safe single-engine climb or to abort if performance isn’t satisfactory. For the Longitude 700, that limit is ten minutes, which matches the aircraft’s certification and performance expectations for OEI takeoff scenarios. The time allows enough margin to reach safe altitude or configuration while protecting engine and system limits. Ten minutes is the correct limit.

When a takeoff is attempted with one engine inoperative, the aircraft is allowed to maintain takeoff thrust on the remaining engine for a limited period. This OEI takeoff thrust time limit exists because running the single engine at takeoff thrust generates more heat and stress, and you need to have a defined window to achieve a safe single-engine climb or to abort if performance isn’t satisfactory. For the Longitude 700, that limit is ten minutes, which matches the aircraft’s certification and performance expectations for OEI takeoff scenarios. The time allows enough margin to reach safe altitude or configuration while protecting engine and system limits. Ten minutes is the correct limit.