What is the sole condition under which wreckage may be moved prior to NTSB custody?

• A. To protect the wreckage from further damage
• B. To clear the runway for traffic
• C. For the convenience of the ground crew
• D. With the owner's consent only

Answer: (A)

The main idea is that wreckage may be moved before NTSB custody only to prevent further damage to the wreckage itself. This is about preserving the condition of what’s left so the investigation isn’t compromised. If you move it for reasons like clearing a runway or for the ground crew’s convenience, you risk destroying or altering evidence and would not be justified. Owner consent doesn’t override the need to preserve the scene for the investigation. So the best reason is to protect the wreckage from further damage.