Fun Fact: Each LEAP-1B leaving the assembly line is tested. During the test, the engine needs to produce 27,900 pounds of thrust. However, some engines produce more than that. These engines are derated using N1 Trim Level. N1 Trim Level is stored on the data entry plug. The trim levels are from 0 (no trim) to 7 (1.51% N1 trim). | The 737 Handbook

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