Aircraft Sector Understanding explained

The aircraft sector understanding is the OECD framework for officially supported export credits relating to civil aircraft. It is commonly called the ASU and is identified as Annex III of the 2026 OECD Arrangement. The ASU supplies common disciplines for participating governments and agencies. It is not an aircraft sale contract, a bank loan, an export credit guarantee or a substitute for aircraft law.

Aircraft sector understanding in the OECD Arrangement

The OECD Arrangement contains general disciplines for officially supported export credits and sector understandings for defined areas. The Arrangement identifies the ASU as Annex III and states that participants to the Aircraft and Ship Sector Understandings differ from participants to the general Arrangement.

Participant status matters. An agency name alone does not establish that the ASU applies. The file should identify the supporting government or agency, confirm its ability to apply the ASU and establish that the exported subject matter falls within the civil aircraft scope. The current Arrangement and agency rules control the classification.

The ASU provides a common framework where a participating government or agency offers official support. It does not require every aircraft purchase to use public support or prevent private finance. Official support can include insurance, a guarantee, direct financing, refinancing or interest rate support under the Arrangement framework.

Scope and classification

Classification begins with the exported subject matter and the current ASU definitions. A civil aircraft transaction may include an aircraft, engines, spare engines, parts, maintenance, service, conversion or modification work. The precise treatment depends on Annex III and the transaction facts. A general reference to aviation does not resolve the analysis.

The commercial description should match the export contract, agency application, technical report and financing documents. Aircraft type, delivery stage, manufacturer, supplier, completion status and associated services can affect the classification. The file should identify the goods or services that receive official support rather than describe an entire aviation business as one export.

An airline working capital loan is not automatically an ASU aircraft export credit. A loan to a lessor, special purpose owner or airline may qualify only where the supported export and official support conditions are satisfied. Delivery, acceptance, registration and payment stages also need clear treatment in the sale and finance documents.

Aircraft finance structures

An aircraft export may use a buyer credit, in which a bank lends to an overseas buyer or other eligible obligor and receives official support. The exporter receives payment under the agreed transaction, while the buyer or obligor repays the bank. The ASU governs relevant official support terms, but the loan retains its own covenants, representations, security and default provisions.

Aircraft security is transaction specific. The lender may take security over the aircraft, shares in an owning company, lease receivables, insurance proceeds, accounts and related contracts. Registration, title, repossession, Cape Town Convention rights and local enforcement can matter where applicable. The existence of aircraft collateral does not establish ASU eligibility or guarantee recovery.

ASU CIRR framework

The CIRR for aircraft official financing is determined under the ASU rather than the general Annex XII CIRR provisions. The 2026 Arrangement expressly carves out the Aircraft Sector Understanding from the general construction and application of CIRRs. Aircraft pricing should therefore begin with Annex III and its aircraft specific rate provisions.

The OECD ASU rate material states that Appendix III of the ASU stipulates the minimum interest rates applicable to official financing support for civil aircraft export credits. The OECD publishes aircraft specific base rate information for relevant currencies and periods. A term sheet should cite the applicable ASU basis and effective date rather than apply a general Arrangement table by assumption.

US EXIM context

US EXIM provides a practical agency context for aircraft export support. Its public aircraft exports page states that the bank offers financing support to foreign purchasers of U.S. manufactured aviation products and that the 2011 ASU governs its aircraft support. This programme description does not establish that every transaction qualifies.

Aircraft credit risks

Aircraft finance has a distinctive asset and counterparty profile. The lender may assess airline credit, lease cash flow, aircraft value, maintenance condition, utilisation, registration, repossession, remarketing and jurisdiction. A guarantee or insurance policy can protect against defined non payment without making the aircraft's value or operation irrelevant.

Delivery and acceptance risk arise before the aircraft becomes an operating asset for the buyer or lessor. Manufacturing delay, specification changes, certification, inspection, payment disputes and refusal can affect drawdown. The sale contract and finance documents should allocate these risks and set out the consequences of a delayed or disputed delivery.

Operating risk continues after delivery. Revenue can be affected by passenger demand, freight demand, routes, regulation, fuel costs, fleet planning and operator liquidity. A lessor structure adds lease renewal, lessee concentration, maintenance reserves and repossession analysis. Those matters belong in the credit assessment alongside the official support classification.

Documentation and compliance

The official support documents should identify the supported export, obligor, lender or insured party, covered risks, support percentage where applicable, exclusions, premium and claims procedure. The finance documents should use consistent aircraft descriptions, repayment dates and obligor details. A mismatch can affect eligibility, payment or recovery.

Changes after approval can require consent. Aircraft substitution, delivery delay, refinancing, lessee change, additional debt or amended payment terms may alter the official support analysis. An amendment to the sale contract does not automatically amend the guarantee, policy or direct loan.

Credit desk review

Review of an aircraft export credit file confirms that the export relates to civil aircraft goods or services within the current Annex III scope. It identifies the relevant ASU participant, supporting agency, support form and obligor. The rate memorandum uses ASU Appendix III and current OECD aircraft rate material rather than general Annex XII methodology.

The credit assessment addresses delivery, operation, counterparty, country, legal and recovery risks. The file explains the repayment source, collateral, insurance, lease or purchase structure and any reliance on agency support. No ASU label replaces an analysis of whether the transaction will repay.

The documentary review reconciles the aircraft description, export contract, finance agreement, official support and security, distinguishing the agency's undertaking from the buyer's or lessor's primary obligation.

Credit desk conclusion

The aircraft sector understanding is OECD Arrangement Annex III for officially supported civil aircraft export credits. It is integrated into the Arrangement but has sector specific rules and a participant framework distinct from the general Arrangement. Scope must be tested against the current annex and the actual exported goods or services.

Aircraft CIRR analysis follows the ASU and its Appendix III rate provisions, not the general Annex XII methodology. US EXIM illustrates how an agency can describe aircraft support under ASU rules, but current participant status, eligibility and agency requirements still need separate verification.