AC 21-23A

Historical

Advisory circular · Airworthiness Certification of Civil Aircraft, Engines, Propellers, and Related Products Imported to the United States

A newer version is currentThis is a historical version. AC 21-23B is the version in force, approved November 17, 2004.
Approved
October 20, 2000
Last reviewed
July 1, 2003
Cancels
AC21-23
Cancelled by
AC21-23B
Family
AC 21-23 · 3 versions
Revision
A
14 CFR parts
21

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 22, 2025.

Show pages 48–59

1 APPENDIX 3. BILATERAL AGREEMENTS RELATED TO AIRWORTHINESS (AS OF OCTOBER 2000) COUNTRY AGREEMENT TYPE APPLICATION/SCOPE OF U.S.

ACCEPTANCE 1 Argentina • BAA

• Schedule of Implementation Procedures Applies to all aeronautical products, including components 2 Australia • BAA Applies to all aeronautical products and certain components 3 Austria • BAA Applies to all aeronautical products 4 Belgium • BAA Applies to all aeronautical products and certain components 5 B r a z i l • BAA Applies to all aeronautical products and certain components 6 Canada • BASA Executive Agreement

• Implementation Procedures for Airworthiness Applies to all aeronautical products, including components 7 China • BAA

• Schedule of Implementation Procedures Applies to fixed-wing aircraft not exceeding 12,500 lbs., commuter category airplanes up to 19 passengers with a maximum certificated take-off weight of 19,000 lbs. or less, and TSO appliances 8 Czech Republic • BAA

• Operating Procedures Applies to all aeronautical products 9 Denmark • BAA Applies to all aeronautical products and certain components 10 Finland • BAA Applies to gliders and aircraft appliances 11 France • BAA Applies to all aeronautical products and certain components 12 Germany • BASA Executive Agreement

• Implementation Procedures for Airworthiness Applies to all aeronautical products and certain components 13 Indonesia • BAA

• Schedule of Implementation Procedures Applies to production oversight in Indonesia under licensing agreements with U.S.

manufacturers

2 APPENDIX 3. BILATERAL AGREEMENTS RELATED TO AIRWORTHINESS (AS OF OCTOBER 2000) (Continued) 14 Israel • BAA Applies to all aeronautical products, appliances, and components 15 Italy • BAA Applies to all aeronautical products and certain components 16 Japan • BAA Applies to all aeronautical products and certain components 17 Malaysia • BASA Executive Agreement

• Implementation Procedures for Airworthiness Applies to TSO appliances and small, all metal airplanes up to 9 passengers with a maximum certificated take-off weight of 12,500 lbs.

18 Netherlands • BAA Applies to all aeronautical products and certain components 19 New Zealand • BAA Applies to fixed-wing aircraft not exceeding 12,500 lbs. and certain components.

20 Norway • BAA Applies to all categories of civil aircraft and appliances 21 Poland • BAA Applies to certain components;

gliders; piston engines of 1,000

h.p. or less; associated propellers;

helicopters; turbine engines; and fixed-wing aircraft not exceeding 12,500 lbs.

22 Romania • BAA Applies to gliders and motorized gliders 23 Russia • BASA Executive Agreement

• Implementation Procedures for Airworthiness Applies to small, all metal airplanes up to 9 passengers with a maximum certificated take-off weight of 12,500 lbs. and to transport category cargo airplanes (both with FAA-certificated engines, propellers, and avionics.)

24 Singapore • BAA Applies to TSO appliances and components 25 South Africa • BAA Applies to all categories of civil aircraft

3 (and 4) APPENDIX 3. BILATERAL AGREEMENTS RELATED TO AIRWORTHINESS (AS OF OCTOBER 2000) (Continued) 26 Spain • BAA Applies to all categories of civil aircraft and appliances 27 Sweden • BAA Applies to all aeronautical products and certain components 28 Switzerland • BAA Applies to all aeronautical products and certain components 29 United Kingdom • BAA Applies to all aeronautical products and certain components

1 APPENDIX 4. SUMMARY OF PRODUCTS ELIGIBLE FOR U.S. IMPORT

UNDER BILATERAL AGREEMENTS (AS OF OCTOBER 2000) Conformity Inspection

BILATERAL

COUNTRIES (Revised 2000) Aircraft New Replacement/Modification parts For Exported Aircraft Aircraft Engines New Replacement/Modification Parts for Exported Engines Propellers New Replacement/Modification Parts for Exported Propellers Appliances New Replacement/Modification Parts for Exported Appliances Materials Parts Subassemblies Third Country Provisions Maintenance Agreement Date See Reference Notes Number Argentina X X X X X X X X X X X 1991 2 A u s t r a l i a X X X X X X X X XXXX 1975 1, 2, 3 Austria X X X X X X 1959 B e l g i u m X X X X X X X X XXXX 1973 1, 2 B r a z i l X X X X X X X X XXXX 1976 1, 2 Canada X X X X X X X X XXXXX 1984 2000 1, 2, 15 China X X X X X X 1991, 1995 2, 4 Czech Republic X X X X X X X X 1970 D e n m a r k X X X X X X X X XXXX 1982 2 Finland X X X X 1974 5 F r a n c e X X X X X X X X XXXXX 1973 1999 1, 2, 14 G e r m a n y X X X X X X X X XXXXX 1997 1999 1, 2, 13 Indonesia 1992 6 Israel X X X X X X X X X X X 1968, 1974 2 I t a l y X X X X X X X X XXXX 1973 1, 2 Japan X X X X X X X X XXXX 1977 1, 2 Malaysia X X X X X X 1997 2. 7 Netherlands X X X X X X X X XXXX 1974 1, 2 New Zealand X X X X X X X 1970, 1979 2, 8 Norway X X X X 1957, 1978 P o l a n d X X X X X X X X XXXX 1976, 1980 2, 9 Romania X X 1976 10 Russia X X X X X 1998 2, 11 Singapore X X XXXX 1981 1, 2, 12 South Africa X X X X X X X X X X X 1955, 1984 2

2 Spain X X X X 1978 Sweden X X X X X X X X XXXX 1973 1, 2 Switzerland X X X X X X X X X X X 1977 2 United Kingdom X X X X X X X X XXXX 1972 1, 2

EXPLANATION OF NOTES

1. These bilateral agreements contain a third-country provision that provides for import/export certification of products by the CAA of a country other than the country of manufacture. In these instances, the exporting country must certify that the products conform to the design covered by the certificate or approval of the importing country (which would be other than country of manufacture) and that the products are in proper state of airworthiness. This provision only applies when all three countries (i.e., manufacturing, importing, and exporting countries) have similar agreements for the reciprocal acceptance of such certifications covering the same class of products. The specific text of the applicable bilateral agreements should be consulted for any limitations.

2. The U.S. has bilateral agreements with these countries which provide for the reciprocal acceptance of conformity inspections (certificates of conformity) for components (i.e., materials, parts, and subassemblies) produced within the limits of each particular bilateral, provided that:

a. An agreement exists between the manufacturers in the importing and exporting countries;

b. The component is of such complexity that a determination of conformity cannot readily be made by the manufacturer in the importing country;

c. The airworthiness authorities of the importing country have notified the airworthiness authorities of the exporting country of the applicable design, test, and quality control requirements; and

d. The authority of the exporting country is willing to undertake the conformity inspection task.

3. The U.S./Australian BAA contains a two-party country provision which provides for:

a. Reciprocal certification whereby Australia can issue an export certificate for a U.S.-manufactured product located in that country which is to be exported to the U.S.

b. Conversely, the U.S. can issue an export certificate for an Australian-manufactured product which is located in the U.S. and which is to be exported to Australia.

c. Such certifications will state that the product conforms to the importing country's type design and is in a proper state of airworthiness.

4. The Schedule of Implementation Procedures for the U.S./China BAA provides for U.S. acceptance of Chinese TSO appliances, fixed-wing aircraft not exceeding 12,500 lbs., and commuter category airplanes up to 19 passengers with a maximum certificated take-off weight of 19,000 lbs.

5. The U.S./Finland BAA is limited to acceptance of glider aircraft and appliances from each country. Although this bilateral agreement contains a provision for including appliances and replacement or modification parts therefor, by mutual consent of both countries’ aviation authorities, no appliances nor replacement/modification parts have been included to date.

6. The Schedule of Implementation Procedures for the U.S./Indonesia BAA is limited, when exporting aeronautical products from Indonesia to the U.S., to the production approval and airworthiness certification or approval of civil aeronautical products for which the Indonesian manufacturer holds the manufacturing rights to a U.S. type certificate under a licensing agreement with a U.S. manufacturer, or with a manufacturer in another state with which the U.S. has an agreement for the reciprocal acceptance of type design certifications.

7. The US/Malaysia Implementation Procedures for Airworthiness provides for U.S.

acceptance of Malaysian TSO appliances and small metal airplanes of up to 9 passengers with a maximum certificated take-off weight of 12,500 lbs.

8. The U.S./New Zealand BAA is limited to:

a. Export from New Zealand to the U.S.:

(1) Fixed-wing aircraft constructed in New Zealand not exceeding a maximum weight of 12,500 pounds; and their spare (replacement) parts;

(2) Appliances for use on civil aircraft; and their spare (replacement) parts; and

(3) Components for fixed-wing aircraft not exceeding 12,500 pounds.

b. Export from the U.S. to New Zealand:

(1) U.S.-constructed civil aircraft, aircraft engines and propellers; and their spare (replacement) parts;

(2) Appliances for use on civil aircraft; and their spare (replacement) parts; and

(3) Components for use on civil aircraft and related products.

9. The U.S./Poland BAA is limited to:

a. Products which may be exported from Poland to U.S. (or U.S. possession):

(1) Civil gliders and replacement/modification parts therefor designed and produced in Poland;

(2) Piston engines of 1,000 h.p. or less with associated propellers and accessories and replacement/modification parts therefor produced in Poland;

*(3) Small fixed-wing aircraft of 12,500 pounds of less and replacement/modification parts therefor;

*(4) Helicopters with associated accessories and replacement/ modification parts therefor;

*(5) Turbine engines and replacement/modification parts therefor; and

(6) Components and appliances for U.S.-manufactured products of the types specified in subparagraphs (1-5) above.

*NOTE: Refer to U.S./Poland BAA for applicable design constraints.

b. Products which may be exported from the U.S. to Poland:

(1) U.S.-designed and produced aircraft, engines, propellers, components and appliances; and replacement/modification parts therefor; and

(2) U.S.-produced components and appliances for Polish-manufactured products; and replacement and spare parts therefor.

10. The U.S./Romania bilateral provides for U.S. acceptance of Romanian gliders and motorized gliders only.

11. The U.S./Russia Implementation Procedures for Airworthiness limit U.S.

acceptance to Russian:

a. New and used, metal aircraft having up to 9 passengers and a maximum certificated take-off weight of 12,500 lbs. or less,

b. New and used transport category aircraft (cargo configuration only) with FAA- certificated engines, propellers, and avionics, approved for Category I and Category II instrument approach procedures; and

c. Metallic materials.

5 (and 6) Aircraft eligible for import to the U.S. must have been designed to the applicable Russian aviation regulations (AP’s). Aircraft built to earlier Soviet regulations are not covered under this agreement.

12. The U.S./Singapore BAA is limited to:

a. Export from Singapore to the U.S.:

(1) U.S.-designed component for use in the manufacture of an aircraft or related product in the U.S. (Note: Such components may also be shipped directly from Singapore to other States [other than the U.S.] when authorized by the FAA, for use as a replacement or modification part on U.S.-registered aircraft located in the other State); and

(2) Appliances approved under Federal Aviation Regulations, 14 CFR 21.617, Technical Standard Order Design Approval.

(3) Note 1 of this document (third party country provision) only applies to those products listed under the foregoing subparagraphs (1) and (2) exported from Singapore to the U.S.

b. Export from the U.S. to Singapore:

(1) All products listed in the summary chart (page 1 of this appendix); and

(2) Note 1 of this document (third country provision) applies to all products listed in the summary chart, exported from the U.S. to Singapore.

13. On August 23, 1999, Implementation Procedures for Airworthiness were concluded under the U.S./Germany Bilateral Aviation Safety Agreement. This IPA includes reciprocal acceptance of all aeronautical products and certain STC’s. (The IPA replaces the 1974 U.S./Germany Bilateral Airworthiness Agreement.) Maintenance Implementation Procedures were concluded with Germany in 1997 for reciprocal acceptance of repair station certifications (contact AFS-300.)

14. Maintenance Implementation Procedures were concluded with France in 1999 for reciprocal acceptance of repair station certifications (contact AFS-300).

15. The FAA signed Implementation Procedures for Airworthiness with Canada in October 2000. This IPA includes reciprocal acceptance of all aeronautical products, including restricted category aircraft, replacement parts, and STC’s. These Implementation Procedures replace the Schedule of Implementation Procedures of 1988, with the exception of chapter 4, Maintenance, Alteration or Modification of Aeronautical Products, which remains in effect until Maintenance Implementation Procedures are concluded.