Which statement is true about the 1L and 1R doors during arming?

• A. 1L and 1R are armed and crosschecked
• B. 2L and 2R must be armed first
• C. 1L and 1R do not require crosschecking
• D. Only 1L needs to be armed to proceed

Answer: (A)

Arming and crosschecking the forward doors ensures both sides are ready for evacuation and that the status is independently verified. When a door is armed, the slide is prepared and the girt bar is engaged, with an armed indicator showing. A second crewmember performs a crosscheck to confirm that the indicator truly shows armed and that the door is in the correct configuration. This mutual verification prevents any mismatch between the perceived and actual armed status. Therefore, both front doors on the left and right must be armed and crosschecked. Arming only one door or skipping the crosscheck would compromise evacuation readiness, and there’s no rule requiring a different pair to be armed first.