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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Operational Procedures > In a non-latching thermal-switch fire-warning circuit, with no power, test or wiring fault, what causes the warning light to extinguish?

297 - ATPL Question Bank in English - In a non-latching thermal-switch fire-warning circuit, with no power, test or wiring fault, what causes the warning light to extinguish?

Question 297 - Operational Procedures - ATPL - Airline Transport Pilot Licence

The fire shut-off handle has been pulled.

The fire-extinguisher has been triggered.

The sensed temperature falls sufficiently for all relevant detector switches to return to their normal open state.

All the fire-extinguishers connected to this engine have been triggered.

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