Spoilers retract after landing under which condition?

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Prepare for the GoJet Airlines CRJ-550 Test. Use flashcards, multiple choice questions, and detailed explanations to ace your exam!

Multiple Choice

Spoilers retract after landing under which condition?

Explanation:
After landing, spoilers stay up to dump lift and aid braking, and their retraction is controlled by two automatic signals. If weight on wheels is sensed, the system will eventually retract the spoilers either after a 40-second timer or when the wheel speed remains below 45 knots for 10 seconds. This dual condition ensures they stay deployed long enough for effective braking during rollout but retract promptly as the aircraft slows or after a safe ground period. Retracting immediately upon touchdown would remove lift-dump too early and reduce braking effectiveness.

After landing, spoilers stay up to dump lift and aid braking, and their retraction is controlled by two automatic signals. If weight on wheels is sensed, the system will eventually retract the spoilers either after a 40-second timer or when the wheel speed remains below 45 knots for 10 seconds. This dual condition ensures they stay deployed long enough for effective braking during rollout but retract promptly as the aircraft slows or after a safe ground period. Retracting immediately upon touchdown would remove lift-dump too early and reduce braking effectiveness.

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