In plain English
FAR 52.247-24, Advance Notification by the Government, is a contract clause prescribed at FAR 47.207-8(a)(1), most recently dated Apr 1984. The complete official text is reproduced below, verbatim, from GSA's published FAR source files.
Its text contains no sentence requiring insertion into subcontracts; see the flowdown section below for what that does and does not mean.
Does it flow down to subcontracts?
No flowdown mandate found in the clause text
We scanned the full clause text and found no sentence directing the contractor to insert this clause into subcontracts. That is a statement about the text, not legal advice: a prime contractor may still flow terms down contractually, an agency supplement (DFARS, VAAR, …) may add requirements, and clauses listed below (if any) may order this clause into subcontracts from the outside.
Where it's prescribed
As prescribed in 47.207-8(a)(1), insert the following clause in solicitations and contracts for transportation or for transportation-related services when the Government is responsible for notifying the contractor of specific service times or unusual shipments:
Prescribing reference: FAR 47.207-8(a)(1).
The official text, verbatim
As prescribed in 47.207-8(a)(1), insert the following clause in solicitations and contracts for transportation or for transportation-related services when the Government is responsible for notifying the contractor of specific service times or unusual shipments:
Advance Notification by the Government (Apr 1984)
The Government will notify the Contractor ___ hours in advance of the number of pieces and weight of all normal shipments and the time the shipment will be available for pickup. On other-than-normal shipments, the Government will furnish additional information; e.g., dimension of oversized pieces, as necessary to determine the amount of equipment and/or manpower needed to perform the required services.
(End of clause)