Holdover time exceedance or heavy snow conditions a visual pre-takeoff contamination check must be conducted within ________ minutes of takeoff.

Holdover time exceedance or heavy snow conditions a visual pre-takeoff contamination check must be conducted within ________ minutes of takeoff.

• A. 5 minutes
• B. 10 minutes
• C. 15 minutes
• D. 2 minutes

Answer: (A)

Contamination checks are performed because holdover time can expire or heavy snow can cause rapid recontamination, leaving surfaces vulnerable to ice or snow before takeoff. The visual pre-takeoff check is meant to verify that critical surfaces remain free of contamination just prior to departure. In these conditions, performing the check within five minutes of takeoff is specified to ensure any new accumulation or remaining contamination is caught while still fresh and before flight. A shorter window would be impractical, while a longer window risks departing with contamination. So the required window is five minutes.

Contamination checks are performed because holdover time can expire or heavy snow can cause rapid recontamination, leaving surfaces vulnerable to ice or snow before takeoff. The visual pre-takeoff check is meant to verify that critical surfaces remain free of contamination just prior to departure. In these conditions, performing the check within five minutes of takeoff is specified to ensure any new accumulation or remaining contamination is caught while still fresh and before flight. A shorter window would be impractical, while a longer window risks departing with contamination. So the required window is five minutes.