Why might flight crew medical and toxicology testing be included in an investigation?

• A. To determine if the pilot's immigration status affected the mishap.
• B. To assess potential impairment or medical factors contributing to performance, if relevant and authorized.
• C. To evaluate the airline's marketing practices.
• D. To measure cabin noise levels.

Answer: (C)

Medical and toxicology testing is included to determine whether impairment from drugs or alcohol, or an underlying medical condition, contributed to the crew’s performance. Investigators look for factors that could affect judgment, reaction time, situational awareness, or decision making at the time of the event. Tests are pursued only when they’re relevant to the investigation and authorized by applicable laws and procedures, with proper handling to protect privacy and preserve evidence. This helps identify safety risks and how to prevent recurrence. Immigration status, marketing practices, or cabin noise levels don’t directly relate to the factors that contribute to the mishap, so they’re not the focus of this testing.