What should be stated in a takeoff clearance immediately following the runway number when the runway has been temporarily shortened?

In a takeoff clearance, when a runway has been temporarily shortened, it is crucial to inform the pilot of the specific condition to ensure safety during the takeoff procedure. Stating "Shortened" immediately after the runway number communicates that the usable length of the runway has been reduced, which directly affects the aircraft's takeoff performance considerations.

This allows pilots to adjust their takeoff calculations accordingly, ensuring they are aware of the reduced distance available for takeoff, which is critical for a safe departure. The term "Shortened" is concise and unambiguous, providing necessary information without confusion. This terminology is standardized to maintain clarity in communications between air traffic control and pilots, especially in situations where performance parameters can be significantly impacted.