Can Sequenced Flashing Lights (SFL) be operated when the ALS is off?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Initial Tower Cab Test with targeted quizzes and informative explanations. Gain the knowledge needed to excel in your air traffic control career. Ace your exam!

Multiple Choice

Can Sequenced Flashing Lights (SFL) be operated when the ALS is off?

Explanation:
Sequenced Flashing Lights rely on the Approach Lighting System being energized and coordinated. When the ALS is on, the SFLs sequence in time with the rest of the runway lighting to give pilots a clear, continuous cue on the final approach. If the ALS is off, the timing and coordination of this lighting picture are disrupted, and turning the SFL on would create incomplete or misleading signals for arriving pilots. For safety, SFLs should not be operated unless the ALS is active, and any ALS outage should be addressed before restoring SFL operation.

Sequenced Flashing Lights rely on the Approach Lighting System being energized and coordinated. When the ALS is on, the SFLs sequence in time with the rest of the runway lighting to give pilots a clear, continuous cue on the final approach. If the ALS is off, the timing and coordination of this lighting picture are disrupted, and turning the SFL on would create incomplete or misleading signals for arriving pilots. For safety, SFLs should not be operated unless the ALS is active, and any ALS outage should be addressed before restoring SFL operation.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy