How does complacency affect communication?

• A. Heightens attention
• B. Encourages questioning
• C. Promotes teamwork
• D. Overreliance on automation → failure to cross-check

Answer: (D)

Complacency in the cockpit reduces vigilance in how crew members communicate. When crews rely too heavily on automation and get used to things proceeding smoothly, they may stop actively verifying what is being conveyed and fail to cross-check information. This leads to accepting instructions or data at face value, increasing the risk of miscommunication and automation surprises. The best description is that complacency leads to overreliance on automation and a failure to cross-check.

Heightened attention would conflict with complacency, which tends to dull vigilance. Encouraging questioning is the opposite of complacent behavior, since questioning requires active engagement rather than passive acceptance. While teamwork can persist, complacency undermines the proactive communication that supports effective teamwork, making cross-checking and clarification less likely.