EASA Form 52: the aircraft statement of conformity explained
EASA Form 52 is the aircraft (or unmanned aircraft system) statement of conformity. The production organisation issues it for a complete aircraft to certify that it fully conforms to the type-certified design, is in a condition for safe operation and has been satisfactorily tested in flight. With it, a production organisation approval holder can obtain the aircraft's certificate of airworthiness and noise certificate without further showing.
- Rules
- Part 21 Appendix VIII; 21.A.130 and 21.A.163(b)
- Issued by
- The production organisation that built the aircraft
- Signed by
- A person authorised by the production approval holder (21.A.145(d)); no rubber stamp signature
- Used for
- A complete aircraft or unmanned aircraft system, to obtain its certificate of airworthiness
- Not used for
- Engines, propellers, parts and appliances: they get an EASA Form 1
When an EASA Form 52 is issued
- Each manufacturer under Part 21 presents a statement of conformity: an EASA Form 52 for a complete aircraft, an EASA Form 1 for anything else (21.A.130(a)).
- A current statement is presented to the competent authority for validation on the initial transfer of ownership and on application for the original certificate of airworthiness (21.A.130(c)). For a complete aircraft this applies whether or not a certificate of airworthiness is applied for.
- The authority validates it by countersignature once it finds the aircraft conforms to the design data and is in a condition for safe operation (21.A.130(d)).
- The statement may not be issued unless the design of the aircraft and its installed products is approved.
- If there is a significant delay between the last production task and presenting the Form 52, the authority also needs evidence of storage, preservation and maintenance since production.
Source: 21.A.130 Statement of conformity; AMC 21.A.130(c)(1) Initial transfer of ownership; AMC 21.A.130(c) Validation of the statement of conformity; Part 21 Appendix VIII: EASA Form 52 and its instructions
General rules for completing it
- Every block needs an entry; the statement is only valid when all blocks are completed.
- Blocks 9 to 14 may refer to separate, identified documents kept on file by the production organisation, unless the competent authority agrees otherwise.
- It may be preprinted or computer generated, in English and, where relevant, the official language of the issuing Member State.
- It does not cover equipment required only by operational rules; operators remain responsible for that.
- The production organisation keeps a copy of the statement and all referenced attachments, and the signed flight test report.
Source: Part 21 Appendix VIII: EASA Form 52 and its instructions
EASA Form 52 block by block
| Block | Name | What to enter |
|---|---|---|
| 1 | State of manufacture | The name of the State of manufacture. |
| 2 | Member State / competent authority | The competent authority under whose authority the statement is issued, or 'EASA' if EASA is the competent authority. |
| 3 | Statement reference number | A unique serial number, preprinted for control and traceability, or produced by the computer for computer-generated forms. |
| 4 | Organisation | Full name and address of the location of the organisation issuing the statement; may be preprinted, logo allowed. |
| 5 | Aircraft type | The aircraft type in full as in the type certificate and its data sheet. |
| 6 | Type certificate reference | The type certificate reference numbers and issue. |
| 7 | Aircraft registration or mark | The registration mark, or, if not registered, the mark accepted by the competent authority. |
| 8 | Production organisation identification number | The organisation's own number for the aircraft, sometimes called the production serial number or constructor's number. |
| 9 | Engine / propeller / CMU details | Engine and propeller types in full with their production identification numbers and location; for UAS, the CMU type and number. |
| 10 | Modifications and/or service bulletins | Approved design changes to the aircraft definition. |
| 11 | Airworthiness directives | All applicable ADs with a declaration of compliance and the method of compliance; any future compliance time must be stated. |
| 12 | Concessions | Approved unintentional deviations from the type design (concessions, divergences, non-conformances). |
| 13 | Exemptions, waivers or derogations | Only agreed exemptions, waivers or derogations. |
| 14 | Remarks | Anything that may affect the aircraft's airworthiness; 'NONE' if there is nothing. |
| 15 | Certificate of airworthiness | 'Certificate of airworthiness' or 'restricted certificate of airworthiness', as requested. |
| 16 | Additional requirements | Additional requirements, such as those notified by an importing country. |
| 17 | Statement of conformity | The certification that the aircraft conforms to the type-certified design and to blocks 9 to 13, is in a condition for safe operation and has been satisfactorily tested in flight. Valid only when all blocks are complete. |
| 18 | Signed | Signature of the person authorised by the production approval holder under 21.A.145(d). A rubber stamp signature must not be used. |
| 19 | Name | Name of the signatory, typed or printed legibly. |
| 20 | Date | Date of signature (dd/mm/yyyy). |
| 21 | Production organisation approval reference | The competent authority approval reference. |
Source: Part 21 Appendix VIII: EASA Form 52 and its instructions
EASA Form 52 and Form 52B
EASA Form 52B is the aircraft statement of conformity under Part 21 Light, for aircraft with a type certificate or a declaration of design compliance. Its block 17 lets the producer certify conformity to either the type-certified design or the declared design data, and block 15 covers a certificate of airworthiness or a restricted certificate of airworthiness.
Source: Part 21 Light Appendix III: EASA Form 52B; 21L.A.274 Issuing EASA Form 52B or EASA Form 1 (Part 21 Light)
Frequently asked questions
What is an EASA Form 52?
The aircraft statement of conformity: the production organisation's certificate that a complete aircraft conforms to its type-certified design, is in a condition for safe operation and has passed its flight test.
Who issues EASA Form 52?
The manufacturer of the aircraft under Part 21. A production organisation approval holder uses it to obtain the certificate of airworthiness and noise certificate without further showing.
What is the difference between EASA Form 52 and EASA Form 1?
Form 52 is for a complete aircraft; Form 1 is for engines, propellers, parts, appliances and other items. For anything other than a complete aircraft, a Form 52 is inappropriate and a Form 1 is used.
Does the competent authority sign EASA Form 52?
It validates the statement by countersignature after inspection, when it finds the aircraft conforms to the design data and is in a condition for safe operation.
Can blocks be left empty?
No. Every block needs an entry for the statement to be valid; write 'NONE' in block 14 if there are no remarks.
Official text
This page follows the Easy Access Rules for Initial Airworthiness and Environmental Protection, November 2025. The regulation text is the reference; this page is a reading aid, not legal advice.
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