In ETOPS, when an engine ceases to function in flight and is shutdown, which term is used to describe this event?

• A. In-Flight Shutdown (IFSD)
• B. Instrument
• C. Idle Thrust
• D. Heliport

Answer: (A)

In ETOPS terminology, when an engine that was operating in flight is shut down, this event is called an In-Flight Shutdown. It means the crew deliberately stopped the engine because of a fault or abnormal condition, rather than it simply failing without any action. This designation is important for planning and dispatch decisions, as it affects engine-out performance calculations and diversion considerations.

The other terms don’t fit: a term like “Instrument” isn’t related to engine status, “Idle thrust” refers to the minimum thrust setting rather than an event of shutdown, and “Heliport” is a destination concept for helicopters, not a description of an engine event in fixed-wing ETOPS operations.