July 29, 2016

sasadmin

Introduction by Steven Bentley MD of Sofema Aviation Services (SAS). Steve started his aviation career at the beginning of the 1970,s and after 45 years is still going strong! here we take a look at the various chapters involved in the EASA Part 21

Subpart B

Includes Obtaining a Type Certificate (TC) for a ‘Product’ (aircraft, engine or propeller)
The use of Restricted Type Certificate (RTC). TC application from a Design Organisation Approval Holder (DOA) – Part 21 subpart J organisation including the use of Alternative Procedures.

The development of a certification plan. The need to ensure full compliance with
Airworthiness and environmental requirements. Operational Suitability Data & Testing to show compliance (may include flight test). Additional requirements Instructions for Continued Airworthiness and European Part Approval.

Subpart D

Related to changes to the type certificate. Different Classifications of Changes – Consider Certification Basis (related to change of product)
Major Changes promulgated by the TC, for Minor changes – no restriction for applicant

Subpart E – Concerns Supplemental Type Certificates (STC)

Relates to Approval process for Major Changes to a product typically where the Applicant is not ly) the Type Certificate (TC) Holder.

Includes requirement to determine the obligations to enter into agreement with the TCH, Concerns the Issue of a Supplemental Type Certificate (STC)

Note that the application for an STC is typically accepted from a Part 21 DOA Holder (Subpart J)
(Deviations from the above are possible when agreed by EASA)

Subpart F – Concerns Production without POA Approval

Used when Subpart G is not appropriate, or as part of a development process where release of product, part or appliance is needed prior to the subsequent certification and issuance of Subpart G approval

Relates to Statement of Conformity & typically requires validation of each production release
certificate by a representative of the local Airworthiness Authority.

Subpart G – Concerns Production Organisation Approval (POA)

Concerns the rules for showing compliance of products, parts & appliances with the relevant
design data. Requires Production Organisation Exposition (POE)

Requires Quality System, with associated competent Personnel, Strong link between the Design Organisation and associated Production Organisation

May Include the potential need for Flight Test

Issue of EASA Form 1: Conformity to design data, safe for operation and Issue of EASA Form 52 for complete aircraft.

Subpart H Concerns Airworthiness Certificates

New Aircraft Certificate of Airworthiness – issued upon presentation to the Competent Authority (CA) or National Aviation Authority (NAA) of a Statement of Conformity In accordance with the requirements of Subpart F or G or with an export certificate of airworthiness

Used aircraft a C of A is issued upon presentation of Airworthiness Review Certificate (ARC) EU internal

Airworthiness status report plus additional data (STC’s Mods & Repairs weight & balance, Flight Manual, records together with ARC recommendation (for non EU aircraft)

Subpart IConcerns the issue of Noise Certificates

New aircraft – Noise certificate issued upon presentation of relevant documentation (statement of conformity or similar if from outside the EU)

Used aircraft – Noise certificate issued upon presentation of noise information and appropriate
Records

Additional information related to Noise Certificates Reference to ICAO Annex 16 & Certification Specification (CS) 36

Subpart J – Concerns Design Organisation Approval (DOA)

The privileges of the DOA, How the Design Assurance System functions.

Requires a Design Organisation Handbook, consideration of the relationship with the Production Organisation Approval (POA)

Subpart K – Parts & Appliance

Shows compliance of the part or appliance with the applicable requirements

Through the Type Certification process concerns Subparts B, D, and or E) or Through the European Technical Standing Order (ETSO) Authorisation concern Subpart O

Considers also Standard Parts (In some cases commercial parts)

Note – Part or appliance are only eligible for installation in a type-certificated product when accompanied by an Authorised Release Certificate certifying airworthiness, and in addition the parts are marked in accordance with Subpart Q

Subpart M  Concerns Repairs – Considers Repair classification

Major repairs shall be approved by the Type Certificate Holder (TCH) or Supplemental Type Certificate Holder (STC) holder – or by EASA

Restoration to an airworthy condition following initial release into service by the manufacturer of any product, part or appliance.

Minor repairs may be approved by any appropriately approved Design Organisation Approval Holder (DOA) or by EASA

Subpart O – Concerns European Technical Standard Order (ETSO) Authorisation

ETSO is a minimum performance standard for specified articles for example (avionics, components etc). ETSO Authorisation provides for approval of the design and production

Concerns also Production Organisation Approval (POA) and approval of Alternate Procedures to DOA (ADOA)

Concerns Declaration of Design and Performance (DDP), Deviations and Modifications to approved equipment

Subpart P – Concerns Permit to Fly Procedures – (Used where the C of A is temporarily invalid or
cannot be issued but the aircraft is capable of performing a safe flight)

EASA Permit to Fly may be issued by Competent Authority on application or by a Production or Design Organisation with appropriate privileges (or a suitably approved Continuous Airworthiness Management Organisation CAMO approved under Part M subpart G with I privileges.

Note that Flight Conditions related to safety of design must be approved either by the Agency or by an appropriately approved Design Organisation before issue of a Permit to Fly

Subpart Q – Identification of Products, Parts & Appliances

Concerns the Marking and identification of Products, Parts & Appliances, Concerns European Part Approval (EPA) related to data not belonging to TC or ETSOA Holder.

Sofema Aviation Services offers several training courses related to EASA Part 21 and UAE CAR 21 please see www.sassofia.com or email office@sassofia.com