Because the plane was not allowed to take up arms because they could be a danger to other passengers. May cause injury or death. Therefore stringent checks, passengers will receive a safety.
The aircraft was not allowed to take up arms because it could be a danger to other passengers. Could cause injury or death. Check it strictly to passengers will be safe.
Because the aircraft are not allowed to bring weapons up because it might be dangerous to other passengers. May damage or death. Therefore, strict check to passengers will be safe.