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Clauses · FAR · Supply chain and sourcing

FAR 52.247-63 Preference for U.S.-Flag Air Carriers

Does the regulation require it to flow down?

Yes

(e): insert in 'each subcontract or purchase under this contract that may involve international air transportation'. If your subcontract has no international air travel or freight, the clause lies dormant.

Form
verbatim — insert the clause ((e))
Reaches
all tiers involving international air transportation — (e) flows down with it and re-propagates

Checked against acquisition.gov on 2026-08-04 · edition JAN 2025 · base v0.9.3 Read the text ↗

What it makes you produce

One item for your checklist.

  1. Something you write

    Days to weeks, and nobody outside your company has to agree to it.

    • A statement of unavailability of US-flag air carriers, included on the voucher, against the criteria at FAR 47.403

      Owed when an international air leg the contract pays for went on a carrier that is not US-flag

      FAR 52.247-63(d)

When it is used

Prescribed by 47.405(a) when the contract may involve international air transportation of personnel or cargo. No dollar threshold. Flows down via (e) to each subcontract or purchase order that may involve international air transportation.

Read closely

(c) is the preference itself and it reaches every international leg the contract pays for — a ticket, a team's travel with baggage, and freight. (e) carries the clause into any subcontract or purchase that may involve international air transportation, and with no international travel or freight the obligation lies dormant.

The 13 templates that name it, with the line
143CORPDOC 3A — FAR/DFARS Flowdown Provisions for Fixed Price Non-Commercial Items under a DoD Prime ContractLockheed Martinline 296155CORPDOC 4A — FAR/DFARS Flowdown Provisions for Cost-Reimbursement/T&M Subcontracts under a DoD Prime ContractLockheed Martinline 331233RTX Flowdown of U.S. Government Contract Clauses Under U.S. Government ContractsRTXline 947105Raytheon TC-002 — Supplement 1: Government Contract Provisions from the FARRTXline 131166Northrop Grumman CTM-P-ST-001 — U.S. Government Firm Fixed Price Order (Not for Commercial Products and Services)Northrop Grummanline 2367166Northrop Grumman CTM-P-ST-003 — U.S. Government T&M Order (Not for Commercial Products and Services)Northrop Grummanline 2307168Northrop Grumman CTM-P-ST-004 — U.S. Government Cost Reimbursement Order (Not for Commercial Products and Services)Northrop Grummanline 2399255GD Mission Systems SCM-TMP-005 — General Provisions, Firm Fixed Price PO under U.S. Government Contract (Non-Commercial)General Dynamicsline 1170243GD Mission Systems SCM-TMP-048 — T&M Purchase Orders for Non-Commercial Items in Support of a U.S. Government ContractGeneral Dynamicsline 2126240L3Harris LGL-50.F1 — General T&C and Flowdown Clauses for Other Than Commercial Products/Services under a U.S. Government ContractL3Harrisline 2243273BAE Systems Inc. USGOVA — FAR/DFARS Flow Down Provisions for Subcontracts/Purchase Orders under a U.S. Government (DoD) Prime ContractBAE Systemsline 684107Honeywell — Supplemental Provisions Under Fixed Price U.S. Government Contracts for Commercial ItemsHoneywellline 462178AAR Component Services NY — U.S. Government Contract FAR and DFARS Clauses Incorporated by ReferenceAAR Corpline 1727

Source: acquisition.gov, FAR 52.247-63 and 47.405(a) (verified 2026-08-04)

This is research, not legal advice. It states what the regulation says about this clause and cites the paragraph behind it. It does not rule on your order, and it does not rule on whether a prime's markings are correct.